made the install script executable

.pylintrc

@@ -0,0 +1,2 @@
+[MASTER]
+disable = c0103

README.md

@@ -1,6 +1,5 @@
 # TeraHz
 
-
 [![Documentation Status](https://readthedocs.org/projects/terahz/badge/?version=latest)](https://terahz.readthedocs.io/en/latest/?badge=latest)
 
 TeraHz is a low-cost spectrometer based on a Raspberry Pi 3 or 3 B+ and three sensors:

backend/app.py

@@ -1,16 +1,17 @@
 # app.py - main backend program
+'''Main TeraHz backend program'''
 # All code in this file is licensed under the ISC license, provided in LICENSE.txt
-from flask import Flask, redirect, url_for, request
+from flask import Flask
 import flask
 import sensors
-import json
-app = Flask(__name__)
-s=sensors.Spectrometer(path='/dev/serial0', baudrate=115200, tout=1)
-u=sensors.UVSensor()
-l=sensors.LxMeter()
 
+app = Flask(__name__)
 @app.route('/data')
 def sendData():
+    '''Responder function for /data route'''
+    s = sensors.Spectrometer(path='/dev/serial0', baudrate=115200, tout=1)
+    u = sensors.UVSensor()
+    l = sensors.LxMeter()
     response = flask.jsonify([s.getData(), l.getData(), u.getABI()])
     response.headers.add('Access-Control-Allow-Origin', '*')
     return response

backend/run.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+# run.sh - run the backend server
+sudo gunicorn app:app -b 0.0.0.0:5000 &
+disown

backend/sensors.py

@@ -1,37 +1,40 @@
 # sensors.py - a module for interfacing to the sensors
+'''Module for interfacing with TeraHz sensors'''
 # Copyright 2019 Kristjan Komloši
 # All code in this file is licensed under the ISC license, provided in LICENSE.txt
 import serial as ser
 import pandas as pd
 import smbus2
-from sys import exit as ex
-import time
 
 class Spectrometer:
+    '''Class representing the AS7265X specrometer'''
     def initializeSensor(self):
-        '''confirm the sensor is responding and proceed with spectrometer initialization'''
+        '''confirm the sensor is responding and proceed\
+         with spectrometer initialization'''
         try:
-            rstring='undefined' # just need it set to a value
+            rstring = 'undefined'  # just need it set to a value
+            self.setParameters({'gain': 0})
             self.serialObject.write(b'AT\n')
-            rstring=self.serialObject.readline().decode()
+            rstring = self.serialObject.readline().decode()
             if rstring == 'undefined':
-                raise Exception #sensor didn't respond
+                raise Exception  # sensor didn't respond
             if rstring == 'OK':
-                pass #handshake passed
+                pass  # handshake passed
             if rstring == 'ERROR':
-                raise Exception #sensor is in error state
+                raise Exception  # sensor is in error state
         except:
-            raise Exception('An exception ocurred when performing spectrometer handshake')
+            raise Exception(
-            ex(1)
+                'An exception ocurred when performing spectrometer handshake')
 
     def setParameters(self, parameters):
         '''applies the parameters like LED light and gain to the spectrometer'''
         try:
             if 'it_time' in parameters:
                 it_time = int(parameters['it_time'])
-                if it_time <=0 :
+                if it_time <= 0:
                     it_time = 1
-                self.serialObject.write('ATINTTIME={}\n'.format(string(it_time)).encode())
+                self.serialObject.write(
+                    'ATINTTIME={}\n'.format(str(it_time)).encode())
                 self.serialObject.readline()
 
             if 'gain' in parameters:
@@ -44,28 +47,29 @@ class Spectrometer:
             if 'led' in parameters:
                 led = bool(parameters['led'])
                 if led:
-                    led=1
+                    led = 1
                 else:
-                    led=0
+                    led = 0
                 self.serialObject.write('ATLED3={}\n'.format(led).encode())
                 self.serialObject.readline()
         except:
-           raise Exception('An exception occured during spectrometer initialization')
+            raise Exception(
-           ex(1)
+                'An exception occured during spectrometer initialization')
 
     def getData(self):
+        '''Returns spectral data in a pandas DataFrame.'''
         try:
             self.serialObject.write(b'ATCDATA\n')
             rawresp = self.serialObject.readline().decode()
         except:
-            raise Exception('An exception occurred when polling for spectrometer data')
+            raise Exception(
-            ex(1)
+                'An exception occurred when polling for spectrometer data')
         else:
             responseorder = [i for i in 'RSTUVWGHIJKLABCDEF']
             realorder = [i for i in 'ABCDEFGHRISJTUVWKL']
-            response = pd.Series([float(i)/35.0 for i in rawresp[:-3].split(',')], index=responseorder)
+            response = pd.Series(
-            return pd.DataFrame(response, index=realorder, columns = ['uW/cm^2']).to_dict()['uW/cm^2']
+                [float(i) / 35.0 for i in rawresp[:-3].split(',')], index=responseorder)
-
+            return pd.DataFrame(response, index=realorder, columns=['uW/cm^2']).to_dict()['uW/cm^2']
 
     def __init__(self, path='/dev/ttyUSB0', baudrate=115200, tout=1):
         self.path = path
@@ -74,22 +78,26 @@ class Spectrometer:
         try:
             self.serialObject = ser.Serial(path, baudrate, timeout=tout)
         except:
-            raise Exception('An exception occured when opening the serial port at {}'.format(path))
+            raise Exception(
-            ex(1)
+                'An exception occured when opening the serial port at {}'.format(path))
         else:
             self.initializeSensor()
 
 
 class LxMeter:
+    '''Class representing the APDS-9301 digital photometer.'''
     def __init__(self, busNumber=1, addr=0x39):
         self.addr = addr
         try:
-            self.bus = smbus2.SMBus(busNumber) # initialize the SMBus interface
+            # initialize the SMBus interface
+            self.bus = smbus2.SMBus(busNumber)
         except:
-            raise Exception('An exception occured opening the SMBus {}'.format(self.bus))
+            raise Exception(
+                'An exception occured opening the SMBus {}'.format(self.bus))
 
         try:
-            self.bus.write_byte_data(self.addr, 0xa0, 0x03) # enable the sensor
+            self.bus.write_byte_data(
+                self.addr, 0xa0, 0x03)  # enable the sensor
             self.setGain(16)
         except:
             raise Exception('An exception occured when enabling lux meter')
@@ -101,13 +109,15 @@ class LxMeter:
                 temp = self.bus.read_byte_data(self.addr, 0xa1)
                 self.bus.write_byte_data(self.addr, 0xa1, 0xef & temp)
             except:
-                raise Exception('An exception occured when setting lux meter gain')
+                raise Exception(
+                    'An exception occured when setting lux meter gain')
         if gain == 16:
             try:
                 temp = self.bus.read_byte_data(self.addr, 0xa1)
                 self.bus.write_byte_data(self.addr, 0xa1, 0x10 | temp)
             except:
-                raise Exception('An exception occured when setting lux meter gain')
+                raise Exception(
+                    'An exception occured when setting lux meter gain')
         else:
             raise Exception('Invalid gain')
 
@@ -118,6 +128,8 @@ class LxMeter:
                 return 16
             if self.bus.read_byte_data(self.addr, 0xa1) & 0x10 == 0x00:
                 return 1
+            raise Exception('An error occured when getting lux meter gain')
+            # Under normal conditions, this raise is unreachable.
         except:
             raise Exception('An error occured when getting lux meter gain')
 
@@ -129,14 +141,16 @@ class LxMeter:
             temp = self.bus.read_byte_data(self.addr, 0xa1)
             self.bus.write_byte_data(self.addr, 0xa1, (temp & 0xfc) | time)
         except:
-            raise Exception('An exception occured setting lux integration time')
+            raise Exception(
+                'An exception occured setting lux integration time')
 
     def getIntTime(self):
         '''Get the lux sensor integration time.'''
         try:
             return self.bus.read_byte_data(self.addr, 0xa1) & 0x03
         except:
-            raise Exception('An exception occured getting lux integration time')
+            raise Exception(
+                'An exception occured getting lux integration time')
 
     def getData(self):
         '''return the calculated lux value'''
@@ -147,31 +161,35 @@ class LxMeter:
             raise Exception('An exception occured fetching lux channels')
 
         # scary computations ahead! refer to the apds-9301 datasheet!
-        if chB/chA <= 0.5 and chB/chA > 0:
+        if chB / chA <= 0.5 and chB / chA > 0:
-            lux = 0.0304*chA - 0.062*chA*(chB/chA)**1.4
+            lux = 0.0304 * chA - 0.062 * chA * (chB / chA)**1.4
-        elif chB/chA <= 0.61 and chB/chA > 0.5:
+        elif chB / chA <= 0.61 and chB / chA > 0.5:
-            lux = 0.0224*chA - 0.031*chB
+            lux = 0.0224 * chA - 0.031 * chB
-        elif chB/chA <=0.8 and chB/chA > 0.61:
+        elif chB / chA <= 0.8 and chB / chA > 0.61:
-            lux = 0.0128*chA - 0.0153*chB
+            lux = 0.0128 * chA - 0.0153 * chB
-        elif chB/chA <=1.3 and chB/chA >0.8:
+        elif chB / chA <= 1.3 and chB / chA > 0.8:
-            lux = 0.00146*chA - 0.00112*chB
+            lux = 0.00146 * chA - 0.00112 * chB
         else:
             lux = 0
         return lux
 
+
 class UVSensor:
+    '''Class representing VEML6075 UVA/B meter'''
     def __init__(self, bus=1, addr=0x10):
-        self.addr=addr
+        self.addr = addr
         try:
             self.bus = smbus2.SMBus(bus)
         except:
-            raise Exception('An exception occured opening SMBus {}'.format(bus))
+            raise Exception(
+                'An exception occured opening SMBus {}'.format(bus))
 
         try:
             # enable the sensor and set the integration time
             self.bus.write_byte_data(self.addr, 0x00, 0b00010000)
         except:
-            raise Exception('An exception occured when initalizing the UV Sensor')
+            raise Exception(
+                'An exception occured when initalizing the UV Sensor')
 
     def getABI(self):
         '''Calculates the UVA and UVB irradiances,
@@ -188,26 +206,34 @@ class UVSensor:
         # scary computations ahead! refer to Vishay app note 84339 and Sparkfun
         # VEML6075 documentation.
 
-        # first, compensate for visible and IR noise
+        # compensate for visible and IR noise
         aCorr = aRaw - 2.22 * c1 - 1.33 * c2
         bCorr = bRaw - 2.95 * c1 - 1.74 * c2
 
-        # second, convert values into irradiances
+        # convert values into irradiances
-        a = aCorr * 0.00110
+        a = aCorr * 1.06
-        b = bCorr * 0.00125
+        b = bCorr * 0.48
 
+        # zero out negative results (readings with no uv)
+        if a < 0:
+            a = 0
+        if b < 0:
+            b = 0
         # last, calculate the UV index
         i = (a + b) / 2
 
-        return [a,b,i]
+        return [a, b, i]
 
     def getA(self):
+        '''Returns UVA value. A getABI() wrapper.'''
         return self.getABI()[0]
 
     def getB(self):
+        '''Returns UVB value. A getABI() wrapper.'''
         return self.getABI()[1]
 
     def getI(self):
+        '''Returns UV index. A getABI() wrapper.'''
         return self.getABI()[2]
 
     def on(self):
@@ -217,7 +243,8 @@ class UVSensor:
             # no configurable params = no bitmask
             self.bus.write_byte_data(self.addr, 0x00, 0x10)
         except:
-            raise Exception('An exception occured when turning the UV sensor on')
+            raise Exception(
+                'An exception occured when turning the UV sensor on')
 
     def off(self):
         '''Shuts the UV sensor down.'''
@@ -226,4 +253,5 @@ class UVSensor:
             # no configurable params = no bitmask
             self.bus.write_byte_data(self.addr, 0x00, 0x11)
         except:
-            raise Exception('An exception occured when shutting the UV sensor down')
+            raise Exception(
+                'An exception occured when shutting the UV sensor down')

backend/storage.py

@@ -1,15 +1,19 @@
 # storage.py - storage backend for TeraHz
+'''TeraHz storage backend'''
 # Copyright Kristjan Komloši 2019
-# All code in this file is licensed under the ISC license, provided in LICENSE.txt
+# All code in this file is licensed under the ISC license,
+# provided in LICENSE.txt
 
 
 import sqlite3
 class jsonStorage:
+    '''Class for simple sqlite3 database of JSON entries'''
     def __init__(self, dbFile):
         '''Storage object constructor. Argument is filename'''
         self.db = sqlite3.connect(dbFile)
 
     def listJSONs(self):
+        '''Returns a list of all existing entries.'''
         c = self.db.cursor()
         c.execute('SELECT * FROM storage')
         result = c.fetchall()
@@ -17,8 +21,10 @@ class jsonStorage:
         return result
 
     def storeJSON(self, jsonString, comment):
+        '''Stores a JSON entry along with a timestamp and a comment.'''
         c = self.db.cursor()
-        c.execute('INSERT INTO storage VALUES (datetime(\'now\', \'localtime\'), ?, ?)', (comment, jsonString))
+        c.execute(('INSERT INTO storage VALUES (datetime'
+                   '(\'now\', \'localtime\'), ?, ?)'), (comment, jsonString))
         c.close()
         self.db.commit()
 

backend/terahz.fcgi

@@ -0,0 +1,7 @@
+#!/usr/bin/python3
+# Minimal flup configuration for Flask
+from flup.server.fcgi import WSGIServer
+from app import app
+
+if __name__ == '__main__':
+    WSGIServer(app, bindAddress='/var/www/api/terahz.sock').run()

docs/build.md

@@ -1,3 +1,7 @@
+# TeraHz build guide
+This document describes the process of building/installing TeraHz from the Git
+repository.
+
 ## Warning
 The recommended way of getting TeraHz is the official Raspberry Pi SD card image
 provided under the releases tab in the GitHub repository. Installing TeraHz from

docs/dependencies.md

@@ -1,3 +1,4 @@
+# Development-stable dependencies
 The current development version of TeraHz has been verified to work with:
 
   - Raspbian Stretch (9)

docs/dev-guide.md

@@ -0,0 +1,95 @@
+# TeraHz developer's guide
+This document explains how TeraHz works. It's a good starting point for developers
+and an interesting read for the curious.
+
+# Hardware
+TeraHz was developed on and for the Raspberry Pi 3 Model B+. Compatibility with
+other Raspberries can probably be achieved by tweaking the device paths in the
+`app.py` file, but isn't confirmed at this point. Theoretically, 3 Model B and
+Zero W should work out of the box, but models without Wi-Fi will need an
+external Wi-Fi adapter if Wi-Fi functionality is desired. The practicality of
+compiling Python on the first generation of Raspberry Pis is also very
+questionable.
+
+Sensors required for operation are:
++ AS7265x
++ VEML6075
++ APDS-9301
+
+They provide the spectrometry data, UV data and illuminance data, respectively.
+They all support I2C, AS7265x supports UART in addition.
+
+The sensors leech power from the GPIO connector, thus eliminating the need for a
+separate power supply. The necessary power for the whole system is delivered through
+the Raspberry's USB port. This also allows for considerable versatility, as it
+enables the resulting device to be either wall-powered or battery-powered.
+In a portable configuration, I used a one-cell power bank, which allowed for
+about 45 minutes of continuous operation.
+
+## AS7265x chipset
+_[Datasheet][1ds] [Buy breakout board][1]_
+
+This chipset supports either I2C or UART. Because transferring large amounts of
+data over I2C is rather cumbersome, TeraHz uses AS7265x in UART mode.
+
+This chipset consists of three rather small surface-mounted chips and requires
+an EEPROM. To lower the complexity of assembly for the end-user, I recommend
+using a breakout board.
+
+The serial UART connection operates at 115200 baud, which seems to be the
+standard for most recent embedded peripherals. As with most serial hardware,
+the TxD and RxD lines must be crossed over when connecting to the processor.
+
+Communication with the sensor is simple and clear through AT commands. There's
+a lot of them, all documented inside the datasheet, but the most important one
+is `ATGETCDATA`, which returns the calibrated spectral data from the sensors.
+
+The data is returned in the form of a comma-separated list of floating point
+values, ending with a newline. The order is alphabetical, which is __different
+from wavelength order__. See the datasheet for more information.
+
+## VEML6075
+_[Datasheet][2ds] [Buy breakout board][2]_
+
+This chip communicates through I2C and provides TeraHz with UVA and UVB
+irradiance readings. It's not an ideal chip for this task, as it's been marked
+End-of-Life by Vishay and it'll have to be replaced with a better one in future
+hardware versions of TeraHz.
+
+The chip resides at the I2C address `0x10`. There's not a lot of communication
+required: at initialization, the integration time has to be set and after that,
+the sensor is ready to go.
+
+16-bit UV values lie in two two-byte registers, `0x07` for UVA and `0x09` for
+UVB. For correct result conversion, there are also two correction registers,
+UVCOMP_1 and 2, located at `0x0A` and `0x0B`, respectively.
+
+To convert these four values into irradiances, they must be multiplied by
+certain constants, somewhat loosely defined in the sensor datasheet. Keep in
+mind that the way of computing the "irradiance" is very much experimentally
+derived, and even Vishay's tech support doesn't know how exactly to calculate
+the irradiance.
+
+## APDS-9301
+_[Datasheet][3ds] [Buy breakout board][3]_
+This chip measures illuminance in luxes and like the VEML6075, connects through
+I2C. Unlike the VEML6075, this chip is very good at its job, providing accurate
+and fast results without undefined mathematics or required calibration.
+
+At power-on, it needs to be enabled and the sensor gain set to the high setting,
+as the formula for Lux calculation is only defined for that setting. This
+initialization is handled by the sensors module.
+
+The lux reading is derived from two channels, descriptively called CH0 and CH1,
+residing in respective 16-bit registers at addresses `0xAC` and `0xAE`. After a
+successful read of both data registers, the lux value can be derived using the
+formula in the sensor's datasheet.
+
+
+
+[1]: https://www.tindie.com/products/onehorse/compact-as7265x-spectrometer/
+[2]: https://www.sparkfun.com/products/15089
+[3]: https://www.sparkfun.com/products/14350
+[1ds]: sensor-docs/AS7265x.pdf
+[2ds]: sensor-docs/veml6075.pdf
+[3ds]: sensor-docs/APDS-9301.pdf

docs/electrical.md

@@ -0,0 +1,55 @@
+# TeraHz Electrical Guide
+This section briefly explains the neccessary electrical connections between the
+Raspberry Pi and the sensors you'll need to make to ensure correct and safe
+operation.
+
+As mentioned before, TeraHz requires 3 sensors to operate. The simpler UVA/UVB
+sensor and the ambient light analyzer connect to the Raspberry's SMBus (I2C)
+bus, while the spectrometer connects via high-speed UART.
+
+![pinout](imgs/raspi-pinout.png)
+
+## PCBs vs breakout boards & jumpers
+The Raspberry Pi GPIO port includes enough power pins to require only jumper
+cables to connect the sensors to the Raspberry Pi. However, this is not a great
+idea. During development, jumper cables have repeatedly been proven to be an
+unreliable nuisance, and their absolute lack of rigidity helped me fry one of my
+development Raspberry Pis. For this reason, I wholeheartedly recommend using a
+simple PCB to route the connections from the Pi to the sensors. At this time,
+there is no official TeraHz PCB, but it shall be announced and included in the
+project when basic testing will be done.
+
+GPIO can be routed to the PCB with a standard old IDE disk cable, and terminated
+with another 40-pin connector at the PCB. Sensor breakouts should be mounted
+<<<<<<< HEAD
+through standard 0.1" connectors, male on the sensor breakout and female on the
+PCB. A shitty add-on header and a shitty add-on header v1.69bis can't hurt, either.
+=======
+through standard 0.1" connectors, male on the sensor brakout and female on the
+PCB. A shitty addon header and a shitty addon header v1.69bis can't hurt, either.
+>>>>>>> fd1f07d40dace3e003e49377d4771de53f8bdeb8
+
+## SMBus sensors
+SMBus is a well-defined version of the well-known I2C bus, widely used
+in computer motherboards for low-band bandwidth communication with various ICs,
+especially sensors and power-supply related devices. This bus is broken out on
+the Raspberry Pi GPIO port as the "I2C1" bus (see picture).
+
+Pins are familiarly marked as SDA and SCL, the same as with classic I2C. They
+connect to the SDA and SCL pins on the VEML6075 and APDS-9301 sensor.
+
+## UART sensor
+<<<<<<< HEAD
+Spectral sensor attaches through the UART port on the Raspberry pi (see picture).
+=======
+Spectrometry sensor attaches through the UART port on the Raspberry pi (see picture).
+>>>>>>> fd1f07d40dace3e003e49377d4771de53f8bdeb8
+
+The Tx and Rx lines must cross over, connecting the sensor's Tx line to the
+computer's Rx line and vice versa.
+
+## Power supply
+As the sensors require only a small amount of power, they can be powered directly from the Raspberry Pi itself, leeching power from the 3.3V lines.
+
+## Ground
+There's not a lot to say here, connect sensor GND to Pi's GND.

docs/index.md

@@ -1 +1,3 @@
-This is the start page for the TeraHz documentation.
+<img alt="TeraHz logo" src="imgs/logo-sq.png" width="200px">
+# TeraHz documentation - index
+This is the starting point of TeraHz documentation.

etcs/default/avahi-daemon

@@ -1,4 +0,0 @@
-# 1 = Try to detect unicast dns servers that serve .local and disable avahi in
-# that case, 0 = Don't try to detect .local unicast dns servers, can cause
-# troubles on misconfigured networks
-AVAHI_DAEMON_DETECT_LOCAL=1

etcs/default/bluetooth

@@ -1,20 +0,0 @@
-# Defaults for bluez
-
-# start bluetooth on boot?
-# compatibility note: if this variable is _not_ found bluetooth will start
-BLUETOOTH_ENABLED=1
-
-# This setting used to switch HID devices (e.g mouse/keyboad) to HCI mode, that
-# is you will have bluetooth functionality from your dongle instead of only
-# HID. This is accomplished for supported devices by udev in
-# /lib/udev/rules.d/62-bluez-hid2hci.rules by invoking hid2hci with correct
-# parameters.
-# See /usr/share/doc/bluez/NEWS.Debian.gz for further information.
-
-# Older daemons like pand dund and hidd can be found in bluez-compat package as
-# they are deprecated and provided for backward compatibility only.
-
-# Note that not every bluetooth dongle is capable of switching back to HID mode,
-# see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=355497
-HID2HCI_ENABLED=0
-HID2HCI_UNDO=0

etcs/default/bsdmainutils

@@ -1,4 +0,0 @@
-# Uncomment the following line if you'd like all of your users'
-# ~/calendar files to be checked daily.  Calendar will send them mail
-# to remind them of upcoming events.  See calendar(1) for more details.
-#RUN_DAILY=true

etcs/default/console-setup

@@ -1,16 +0,0 @@
-# CONFIGURATION FILE FOR SETUPCON
-
-# Consult the console-setup(5) manual page.
-
-ACTIVE_CONSOLES="/dev/tty[1-6]"
-
-CHARMAP="UTF-8"
-
-CODESET="guess"
-FONTFACE=""
-FONTSIZE=""
-
-VIDEOMODE=
-
-# The following is an example how to use a braille font
-# FONT='lat9w-08.psf.gz brl-8x8.psf'

etcs/default/crda

@@ -1,11 +0,0 @@
-# Set REGDOMAIN to a ISO/IEC 3166-1 alpha2 country code so that iw(8) may set
-# the initial regulatory domain setting for IEEE 802.11 devices which operate
-# on this system.
-#
-# Governments assert the right to regulate usage of radio spectrum within
-# their respective territories so make sure you select a ISO/IEC 3166-1 alpha2
-# country code suitable for your location or you may infringe on local
-# legislature. See `/usr/share/zoneinfo/zone.tab' for a table of timezone
-# descriptions containing ISO/IEC 3166-1 alpha2 country codes.
-
-REGDOMAIN=

etcs/default/cron

@@ -1,28 +0,0 @@
-# Cron configuration options
-
-# Whether to read the system's default environment files (if present)
-# If set to "yes", cron will set a proper mail charset from the
-# locale information. If set to something other than 'yes', the default
-# charset 'C' (canonical name: ANSI_X3.4-1968) will be used.
-#
-# This has no effect on tasks running under cron; their environment can
-# only be changed via PAM or from within the crontab; see crontab(5).
-READ_ENV="yes"
-
-# Extra options for cron, see cron(8)
-#
-# For example, to enable LSB name support in /etc/cron.d/, use
-# EXTRA_OPTS='-l'  
-#
-# Or, to log standard messages, plus jobs with exit status != 0:
-# EXTRA_OPTS='-L 5'
-#
-# For quick reference, the currently available log levels are:
-#   0   no logging (errors are logged regardless)
-#   1   log start of jobs
-#   2   log end of jobs
-#   4   log jobs with exit status != 0
-#   8   log the process identifier of child process (in all logs)
-#
-#EXTRA_OPTS=""
-

etcs/default/dbus

@@ -1,7 +0,0 @@
-# This is a configuration file for /etc/init.d/dbus; it allows you to
-# perform common modifications to the behavior of the dbus daemon
-# startup without editing the init script (and thus getting prompted
-# by dpkg on upgrades).  We all love dpkg prompts.
-
-# Parameters to pass to dbus.
-PARAMS=""

etcs/default/dnsmasq

@@ -1,33 +0,0 @@
-# This file has five functions: 
-# 1) to completely disable starting dnsmasq, 
-# 2) to set DOMAIN_SUFFIX by running `dnsdomainname` 
-# 3) to select an alternative config file
-#    by setting DNSMASQ_OPTS to --conf-file=<file>
-# 4) to tell dnsmasq to read the files in /etc/dnsmasq.d for
-#    more configuration variables.
-# 5) to stop the resolvconf package from controlling dnsmasq's
-#    idea of which upstream nameservers to use.
-# For upgraders from very old versions, all the shell variables set 
-# here in previous versions are still honored by the init script
-# so if you just keep your old version of this file nothing will break.
-
-#DOMAIN_SUFFIX=`dnsdomainname`
-#DNSMASQ_OPTS="--conf-file=/etc/dnsmasq.alt"
-
-# Whether or not to run the dnsmasq daemon; set to 0 to disable.
-ENABLED=1
-
-# By default search this drop directory for configuration options.
-# Libvirt leaves a file here to make the system dnsmasq play nice.
-# Comment out this line if you don't want this. The dpkg-* are file
-# endings which cause dnsmasq to skip that file. This avoids pulling
-# in backups made by dpkg.
-CONFIG_DIR=/etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new
-
-# If the resolvconf package is installed, dnsmasq will use its output 
-# rather than the contents of /etc/resolv.conf to find upstream 
-# nameservers. Uncommenting this line inhibits this behaviour.
-# Note that including a "resolv-file=<filename>" line in 
-# /etc/dnsmasq.conf is not enough to override resolvconf if it is
-# installed: the line below must be uncommented.
-IGNORE_RESOLVCONF=yes

etcs/default/fake-hwclock

@@ -1,2 +0,0 @@
-# Uncomment to set clock even if saved value appears to be in the past
-#FORCE=force

etcs/default/hostapd

@@ -1,20 +0,0 @@
-# Defaults for hostapd initscript
-#
-# See /usr/share/doc/hostapd/README.Debian for information about alternative
-# methods of managing hostapd.
-#
-# Uncomment and set DAEMON_CONF to the absolute path of a hostapd configuration
-# file and hostapd will be started during system boot. An example configuration
-# file can be found at /usr/share/doc/hostapd/examples/hostapd.conf.gz
-#
-DAEMON_CONF="/etc/hostapd/hostapd.conf"
-
-# Additional daemon options to be appended to hostapd command:-
-# 	-d   show more debug messages (-dd for even more)
-# 	-K   include key data in debug messages
-# 	-t   include timestamps in some debug messages
-#
-# Note that -B (daemon mode) and -P (pidfile) options are automatically
-# configured by the init.d script and must not be added to DAEMON_OPTS.
-#
-#DAEMON_OPTS=""

etcs/default/hwclock

@@ -1,19 +0,0 @@
-# Defaults for the hwclock init script.  See hwclock(5) and hwclock(8).
-
-# This is used to specify that the hardware clock incapable of storing
-# years outside the range of 1994-1999.  Set to yes if the hardware is
-# broken or no if working correctly.
-#BADYEAR=no
-
-# Set this to yes if it is possible to access the hardware clock,
-# or no if it is not.
-#HWCLOCKACCESS=yes
-
-# Set this to any options you might need to give to hwclock, such
-# as machine hardware clock type for Alphas.
-#HWCLOCKPARS=
-
-# Set this to the hardware clock device you want to use, it should
-# probably match the CONFIG_RTC_HCTOSYS_DEVICE kernel config option.
-#HCTOSYS_DEVICE=rtc0
-

etcs/default/keyboard

@@ -1,10 +0,0 @@
-# KEYBOARD CONFIGURATION FILE
-
-# Consult the keyboard(5) manual page.
-
-XKBMODEL="pc105"
-XKBLAYOUT="gb"
-XKBVARIANT=""
-XKBOPTIONS=""
-
-BACKSPACE="guess"

etcs/default/locale

@@ -1,2 +0,0 @@
-#  File generated by update-locale
-LANG=en_GB.UTF-8

etcs/default/networking

@@ -1,11 +0,0 @@
-# Configuration for networking init script being run during
-# the boot sequence
-
-# Set to 'no' to skip interfaces configuration on boot
-#CONFIGURE_INTERFACES=yes
-
-# Don't configure these interfaces. Shell wildcards supported/
-#EXCLUDE_INTERFACES=
-
-# Set to 'yes' to enable additional verbosity
-#VERBOSE=no

etcs/default/nfs-common

@@ -1,19 +0,0 @@
-# If you do not set values for the NEED_ options, they will be attempted
-# autodetected; this should be sufficient for most people. Valid alternatives
-# for the NEED_ options are "yes" and "no".
-
-# Do you want to start the statd daemon? It is not needed for NFSv4.
-NEED_STATD=
-
-# Options for rpc.statd.
-#   Should rpc.statd listen on a specific port? This is especially useful
-#   when you have a port-based firewall. To use a fixed port, set this
-#   this variable to a statd argument like: "--port 4000 --outgoing-port 4001".
-#   For more information, see rpc.statd(8) or http://wiki.debian.org/SecuringNFS
-STATDOPTS=
-
-# Do you want to start the idmapd daemon? It is only needed for NFSv4.
-NEED_IDMAPD=
-
-# Do you want to start the gssd daemon? It is required for Kerberos mounts.
-NEED_GSSD=

etcs/default/nss

@@ -1,37 +0,0 @@
-# /etc/default/nss
-# This file can theoretically contain a bunch of customization variables
-# for Name Service Switch in the GNU C library.  For now there are only
-# four variables:
-#
-# NETID_AUTHORITATIVE
-#   If set to TRUE, the initgroups() function will accept the information
-#   from the netid.byname NIS map as authoritative.  This can speed up the
-#   function significantly if the group.byname map is large.  The content
-#   of the netid.byname map is used AS IS.  The system administrator has
-#   to make sure it is correctly generated.
-#NETID_AUTHORITATIVE=TRUE
-#
-# SERVICES_AUTHORITATIVE
-#   If set to TRUE, the getservbyname{,_r}() function will assume
-#   services.byservicename NIS map exists and is authoritative, particularly
-#   that it contains both keys with /proto and without /proto for both
-#   primary service names and service aliases.  The system administrator
-#   has to make sure it is correctly generated.
-#SERVICES_AUTHORITATIVE=TRUE
-#
-# SETENT_BATCH_READ
-#  If set to TRUE, various setXXent() functions will read the entire
-#  database at once and then hand out the requests one by one from
-#  memory with every getXXent() call.  Otherwise each getXXent() call
-#  might result into a network communication with the server to get
-#  the next entry.
-#SETENT_BATCH_READ=TRUE
-#
-# ADJUNCT_AS_SHADOW
-#  If set to TRUE, the passwd routines in the NIS NSS module will not
-#  use the passwd.adjunct.byname tables to fill in the password data
-#  in the passwd structure.  This is a security problem if the NIS
-#  server cannot be trusted to send the passwd.adjuct table only to
-#  privileged clients.  Instead the passwd.adjunct.byname table is
-#  used to synthesize the shadow.byname table if it does not exist.
-ADJUNCT_AS_SHADOW=TRUE

etcs/default/raspberrypi-kernel

@@ -1,11 +0,0 @@
-# Defaults for raspberrypi-kernel
-
-# Uncomment the following line to enable generation of
-# /boot/initrd.img-KVER files (requires initramfs-tools)
-
-#INITRD=Yes
-
-# Uncomment the following line to enable generation of
-# /boot/initrd(7).img files (requires rpi-initramfs-tools)
-
-#RPI_INITRD=Yes

etcs/default/rsync

@@ -1,47 +0,0 @@
-# defaults file for rsync daemon mode
-#
-# This file is only used for init.d based systems!
-# If this system uses systemd, you can specify options etc. for rsync
-# in daemon mode by copying /lib/systemd/system/rsync.service to
-# /etc/systemd/system/rsync.service and modifying the copy; add required
-# options to the ExecStart line.
-
-# start rsync in daemon mode from init.d script?
-#  only allowed values are "true", "false", and "inetd"
-#  Use "inetd" if you want to start the rsyncd from inetd,
-#  all this does is prevent the init.d script from printing a message
-#  about not starting rsyncd (you still need to modify inetd's config yourself).
-RSYNC_ENABLE=false
-
-# which file should be used as the configuration file for rsync.
-# This file is used instead of the default /etc/rsyncd.conf
-# Warning: This option has no effect if the daemon is accessed
-#          using a remote shell. When using a different file for
-#          rsync you might want to symlink /etc/rsyncd.conf to
-#          that file.
-# RSYNC_CONFIG_FILE=
-
-# what extra options to give rsync --daemon?
-#  that excludes the --daemon; that's always done in the init.d script
-#  Possibilities are:
-#   --address=123.45.67.89		(bind to a specific IP address)
-#   --port=8730				(bind to specified port; default 873)
-RSYNC_OPTS=''
-
-# run rsyncd at a nice level?
-#  the rsync daemon can impact performance due to much I/O and CPU usage,
-#  so you may want to run it at a nicer priority than the default priority.
-#  Allowed values are 0 - 19 inclusive; 10 is a reasonable value.
-RSYNC_NICE=''
-
-# run rsyncd with ionice?
-#  "ionice" does for IO load what "nice" does for CPU load.
-#  As rsync is often used for backups which aren't all that time-critical,
-#  reducing the rsync IO priority will benefit the rest of the system.
-#  See the manpage for ionice for allowed options.
-#  -c3 is recommended, this will run rsync IO at "idle" priority. Uncomment
-#  the next line to activate this.
-# RSYNC_IONICE='-c3'
-
-# Don't forget to create an appropriate config file,
-# else the daemon will not start.

etcs/default/rsyslog

@@ -1,4 +0,0 @@
-# Options for rsyslogd
-# -x disables DNS lookups for remote messages
-# See rsyslogd(8) for more details
-RSYSLOGD_OPTIONS=""

etcs/default/ssh

@@ -1,5 +0,0 @@
-# Default settings for openssh-server. This file is sourced by /bin/sh from
-# /etc/init.d/ssh.
-
-# Options to pass to sshd
-SSHD_OPTS=

etcs/default/timidity

@@ -1,22 +0,0 @@
-# Defaults for TiMidity++ scripts
-# sourced by /etc/init.d/timidity
-# installed at /etc/default/timidity by the maintainer scripts
-# $Id: timidity.default,v 1.3 2004/08/07 14:33:26 hmh Exp $
-
-#
-# This is a POSIX shell fragment
-#
-
-SERVER_HOME=/etc/timidity
-SERVER_USER=timidity
-SERVER_NAME="TiMidity++ MIDI sequencer service"
-SERVER_GROUP=timidity
-ADDGROUP=audio
-
-# Enable MIDI sequencer (ALSA), if timidity-deamon is installed
-
-# uncomment to override enabling triggered by availability of timidity-deamon
-# TIM_ALSASEQ=false
-
-# Setting overrides (of /etc/timidity.conf) for the ALSA sequencer daemon
-TIM_ALSASEQPARAMS="-Os"

etcs/default/triggerhappy

@@ -1,17 +0,0 @@
-# Defaults for triggerhappy initscript
-# sourced by /etc/init.d/triggerhappy
-# installed at /etc/default/triggerhappy by the maintainer scripts
-
-#
-# This is a POSIX shell fragment
-#
-
-# Additional options that are passed to the Daemon.
-DAEMON_OPTS=""
-
-# The Triggerhappy daemon (thd) drops its root privileges after
-# startup and becomes "nobody". If you want it to retain its root
-# status (e.g. to run commands only accessible to the system user),
-# uncomment the following line or specifiy the user option yourself:
-#
-# DAEMON_OPTS="--user root"

etcs/default/useradd

@@ -1,37 +0,0 @@
-# Default values for useradd(8)
-#
-# The SHELL variable specifies the default login shell on your
-# system.
-# Similar to DHSELL in adduser. However, we use "sh" here because
-# useradd is a low level utility and should be as general
-# as possible
-SHELL=/bin/bash
-#
-# The default group for users
-# 100=users on Debian systems
-# Same as USERS_GID in adduser
-# This argument is used when the -n flag is specified.
-# The default behavior (when -n and -g are not specified) is to create a
-# primary user group with the same name as the user being added to the
-# system.
-# GROUP=100
-#
-# The default home directory. Same as DHOME for adduser
-# HOME=/home
-#
-# The number of days after a password expires until the account 
-# is permanently disabled
-# INACTIVE=-1
-#
-# The default expire date
-# EXPIRE=
-#
-# The SKEL variable specifies the directory containing "skeletal" user
-# files; in other words, files such as a sample .profile that will be
-# copied to the new user's home directory when it is created.
-SKEL=/etc/skel
-#
-# Defines whether the mail spool should be created while
-# creating the account
-# CREATE_MAIL_SPOOL=yes
-

etcs/dhcpcd.conf

@@ -1,59 +0,0 @@
-# A sample configuration for dhcpcd.
-# See dhcpcd.conf(5) for details.
-
-# Allow users of this group to interact with dhcpcd via the control socket.
-#controlgroup wheel
-
-# Inform the DHCP server of our hostname for DDNS.
-hostname
-
-# Use the hardware address of the interface for the Client ID.
-clientid
-# or
-# Use the same DUID + IAID as set in DHCPv6 for DHCPv4 ClientID as per RFC4361.
-# Some non-RFC compliant DHCP servers do not reply with this set.
-# In this case, comment out duid and enable clientid above.
-#duid
-
-# Persist interface configuration when dhcpcd exits.
-persistent
-
-# Rapid commit support.
-# Safe to enable by default because it requires the equivalent option set
-# on the server to actually work.
-option rapid_commit
-
-# A list of options to request from the DHCP server.
-option domain_name_servers, domain_name, domain_search, host_name
-option classless_static_routes
-# Most distributions have NTP support.
-option ntp_servers
-# Respect the network MTU. This is applied to DHCP routes.
-option interface_mtu
-
-# A ServerID is required by RFC2131.
-require dhcp_server_identifier
-
-# Generate Stable Private IPv6 Addresses instead of hardware based ones
-slaac private
-
-# Example static IP configuration:
-#interface eth0
-#static ip_address=192.168.0.10/24
-#static ip6_address=fd51:42f8:caae:d92e::ff/64
-#static routers=192.168.0.1
-#static domain_name_servers=192.168.0.1 8.8.8.8 fd51:42f8:caae:d92e::1
-
-# It is possible to fall back to a static IP if DHCP fails:
-# define static profile
-#profile static_eth0
-#static ip_address=192.168.1.23/24
-#static routers=192.168.1.1
-#static domain_name_servers=192.168.1.1
-
-# fallback to static profile on eth0
-#interface eth0
-#fallback static_eth0
-
-interface wlan0
-static ip_address=192.168.1.1/24

etcs/hostapd/edit_ssid.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+# edit_ssid.sh - edits hostapd.conf and sets a MAC address-based SSID
+ssid=`ip link | awk '/wlan0/ {getline; print $2}' | awk -v FS=':' '{printf("TeraHz_%s%s%s\n", $4, $5, $6)}'`
+sed "/ssid=.*/s/ssid=.*/ssid=$ssid/" hostapd.conf > newconf
+mv newconf hostapd.conf

etcs/hostapd/ifupdown.sh

@@ -1,146 +0,0 @@
-#!/bin/sh
-
-# Copyright (C) 2006-2009 Debian hostapd maintainers 
-# 	Faidon Liambotis <paravoid@debian.org>
-#	Kel Modderman <kel@otaku42.de>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# On Debian GNU/Linux systems, the text of the GPL license,
-# version 2, can be found in /usr/share/common-licenses/GPL-2.
-
-# quit if we're called for lo
-if [ "$IFACE" = lo ]; then
-	exit 0
-fi
-
-if [ -n "$IF_HOSTAPD" ]; then
-	HOSTAPD_CONF="$IF_HOSTAPD"
-else
-	exit 0
-fi
-
-HOSTAPD_BIN="/usr/sbin/hostapd"
-HOSTAPD_PNAME="hostapd"
-HOSTAPD_PIDFILE="/run/hostapd.$IFACE.pid"
-HOSTAPD_OMIT_PIDFILE="/run/sendsigs.omit.d/hostapd.$IFACE.pid"
-
-if [ ! -x "$HOSTAPD_BIN" ]; then
-	exit 0
-fi
-
-if [ "$VERBOSITY" = "1" ]; then
-	TO_NULL="/dev/stdout"
-else
-	TO_NULL="/dev/null"
-fi
-
-hostapd_msg () {
-	case "$1" in
-		verbose)
-			shift
-			echo "$HOSTAPD_PNAME: $@" > "$TO_NULL"
-			;;
-		stderr)
-			shift
-			echo "$HOSTAPD_PNAME: $@" > /dev/stderr
-			;;
-		*)
-			;;
-	esac
-}
-
-test_hostapd_pidfile () {
-	if [ -n "$1" ] && [ -f "$2" ]; then
-		if start-stop-daemon --stop --quiet --signal 0 \
-			--exec "$1" --pidfile "$2"; then
-			return 0
-		else
-			rm -f "$2"
-			return 1
-		fi
-	else
-		return 1
-	fi
-}
-
-init_hostapd () {
-	HOSTAPD_OPTIONS="-B -P $HOSTAPD_PIDFILE $HOSTAPD_CONF"
-	HOSTAPD_MESSAGE="$HOSTAPD_BIN $HOSTAPD_OPTIONS"
-	
-	test_hostapd_pidfile "$HOSTAPD_BIN" "$HOSTAPD_PIDFILE" && return 0
-
-	hostapd_msg verbose "$HOSTAPD_MESSAGE"
-	start-stop-daemon --start --oknodo --quiet --exec "$HOSTAPD_BIN" \
-		--pidfile "$HOSTAPD_PIDFILE" -- $HOSTAPD_OPTIONS > "$TO_NULL"
-
-	if [ "$?" -ne 0 ]; then
-		return "$?"
-	fi
-
-	HOSTAPD_PIDFILE_WAIT=0
-	until [ -s "$HOSTAPD_PIDFILE" ]; do
-		if [ "$HOSTAPD_PIDFILE_WAIT" -ge 5 ]; then
-			hostapd_msg stderr \
-				"timeout waiting for pid file creation"
-			return 1
-		fi
-
-		HOSTAPD_PIDFILE_WAIT=$(($HOSTAPD_PIDFILE_WAIT + 1))
-		sleep 1
-	done
-	cat "$HOSTAPD_PIDFILE" > "$HOSTAPD_OMIT_PIDFILE"
-
-	return 0
-}
-
-kill_hostapd () {
-	HOSTAPD_MESSAGE="stopping $HOSTAPD_PNAME via pidfile: $HOSTAPD_PIDFILE"
-
-	test_hostapd_pidfile "$HOSTAPD_BIN" "$HOSTAPD_PIDFILE" || return 0
-	
-	hostapd_msg verbose "$HOSTAPD_MESSAGE"
-	start-stop-daemon --stop --oknodo --quiet --exec "$HOSTAPD_BIN" \
-		--pidfile "$HOSTAPD_PIDFILE" > "$TO_NULL"
-	
-	[ "$HOSTAPD_OMIT_PIDFILE" ] && rm -f "$HOSTAPD_OMIT_PIDFILE"
-}
-
-case "$MODE" in 
-	start)
-		case "$PHASE" in
-			pre-up)
-				init_hostapd || exit 1
-				;;
-			*)
-				hostapd_msg stderr "unknown phase: \"$PHASE\""
-				exit 1
-				;;
-		esac
-		;;
-	stop)
-		case "$PHASE" in
-			post-down)
-				kill_hostapd
-				;;
-			*)
-				hostapd_msg stderr "unknown phase: \"$PHASE\""
-				exit 1
-				;;
-		esac
-		;;
-	*)
-		hostapd_msg stderr "unknown mode: \"$MODE\""
-		exit 1
-		;;
-esac
-
-exit 0

etcs/ifupdown.sh

@@ -1,146 +0,0 @@
-#!/bin/sh
-
-# Copyright (C) 2006-2009 Debian hostapd maintainers 
-# 	Faidon Liambotis <paravoid@debian.org>
-#	Kel Modderman <kel@otaku42.de>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# On Debian GNU/Linux systems, the text of the GPL license,
-# version 2, can be found in /usr/share/common-licenses/GPL-2.
-
-# quit if we're called for lo
-if [ "$IFACE" = lo ]; then
-	exit 0
-fi
-
-if [ -n "$IF_HOSTAPD" ]; then
-	HOSTAPD_CONF="$IF_HOSTAPD"
-else
-	exit 0
-fi
-
-HOSTAPD_BIN="/usr/sbin/hostapd"
-HOSTAPD_PNAME="hostapd"
-HOSTAPD_PIDFILE="/run/hostapd.$IFACE.pid"
-HOSTAPD_OMIT_PIDFILE="/run/sendsigs.omit.d/hostapd.$IFACE.pid"
-
-if [ ! -x "$HOSTAPD_BIN" ]; then
-	exit 0
-fi
-
-if [ "$VERBOSITY" = "1" ]; then
-	TO_NULL="/dev/stdout"
-else
-	TO_NULL="/dev/null"
-fi
-
-hostapd_msg () {
-	case "$1" in
-		verbose)
-			shift
-			echo "$HOSTAPD_PNAME: $@" > "$TO_NULL"
-			;;
-		stderr)
-			shift
-			echo "$HOSTAPD_PNAME: $@" > /dev/stderr
-			;;
-		*)
-			;;
-	esac
-}
-
-test_hostapd_pidfile () {
-	if [ -n "$1" ] && [ -f "$2" ]; then
-		if start-stop-daemon --stop --quiet --signal 0 \
-			--exec "$1" --pidfile "$2"; then
-			return 0
-		else
-			rm -f "$2"
-			return 1
-		fi
-	else
-		return 1
-	fi
-}
-
-init_hostapd () {
-	HOSTAPD_OPTIONS="-B -P $HOSTAPD_PIDFILE $HOSTAPD_CONF"
-	HOSTAPD_MESSAGE="$HOSTAPD_BIN $HOSTAPD_OPTIONS"
-	
-	test_hostapd_pidfile "$HOSTAPD_BIN" "$HOSTAPD_PIDFILE" && return 0
-
-	hostapd_msg verbose "$HOSTAPD_MESSAGE"
-	start-stop-daemon --start --oknodo --quiet --exec "$HOSTAPD_BIN" \
-		--pidfile "$HOSTAPD_PIDFILE" -- $HOSTAPD_OPTIONS > "$TO_NULL"
-
-	if [ "$?" -ne 0 ]; then
-		return "$?"
-	fi
-
-	HOSTAPD_PIDFILE_WAIT=0
-	until [ -s "$HOSTAPD_PIDFILE" ]; do
-		if [ "$HOSTAPD_PIDFILE_WAIT" -ge 5 ]; then
-			hostapd_msg stderr \
-				"timeout waiting for pid file creation"
-			return 1
-		fi
-
-		HOSTAPD_PIDFILE_WAIT=$(($HOSTAPD_PIDFILE_WAIT + 1))
-		sleep 1
-	done
-	cat "$HOSTAPD_PIDFILE" > "$HOSTAPD_OMIT_PIDFILE"
-
-	return 0
-}
-
-kill_hostapd () {
-	HOSTAPD_MESSAGE="stopping $HOSTAPD_PNAME via pidfile: $HOSTAPD_PIDFILE"
-
-	test_hostapd_pidfile "$HOSTAPD_BIN" "$HOSTAPD_PIDFILE" || return 0
-	
-	hostapd_msg verbose "$HOSTAPD_MESSAGE"
-	start-stop-daemon --stop --oknodo --quiet --exec "$HOSTAPD_BIN" \
-		--pidfile "$HOSTAPD_PIDFILE" > "$TO_NULL"
-	
-	[ "$HOSTAPD_OMIT_PIDFILE" ] && rm -f "$HOSTAPD_OMIT_PIDFILE"
-}
-
-case "$MODE" in 
-	start)
-		case "$PHASE" in
-			pre-up)
-				init_hostapd || exit 1
-				;;
-			*)
-				hostapd_msg stderr "unknown phase: \"$PHASE\""
-				exit 1
-				;;
-		esac
-		;;
-	stop)
-		case "$PHASE" in
-			post-down)
-				kill_hostapd
-				;;
-			*)
-				hostapd_msg stderr "unknown phase: \"$PHASE\""
-				exit 1
-				;;
-		esac
-		;;
-	*)
-		hostapd_msg stderr "unknown mode: \"$MODE\""
-		exit 1
-		;;
-esac
-
-exit 0

etcs/install.sh

@@ -0,0 +1,19 @@
+# install.sh - install TeraHz onto a Raspbian or DietPi installation
+apt -y update
+apt -y full-upgrade
+apt install -y python3 python3-pip lighttpd dnsmasq hostapd libatlas-base-dev
+pip3 install numpy pandas flask smbus2 pyserial
+
+cp -R hostapd/ /etc
+cp -R lighttpd/ /etc
+cp dnsmasq.conf /etc
+cp rc.local /etc
+cp -R ../frontend/* /var/www/html
+mkdir -p /usr/local/lib/terahz
+cp -R ../backend/* /usr/local/lib/terahz
+cd /etc/hostapd
+chmod +x edit_ssid.sh
+./edit_ssid.sh
+
+systemctl unmask dnsmasq hostapd lighttpd
+systemctl enable dnsmasq hostapd lighttpd

etcs/lighttpd/conf-available/05-auth.conf

@@ -1,25 +0,0 @@
-# /usr/share/doc/lighttpd/authentication.txt.gz
-
-server.modules                += ( "mod_auth" )
-
-# auth.backend                 = "plain"
-# auth.backend.plain.userfile  = "lighttpd.user"
-# auth.backend.plain.groupfile = "lighttpd.group"
-
-# auth.backend.ldap.hostname   = "localhost"
-# auth.backend.ldap.base-dn    = "dc=my-domain,dc=com"
-# auth.backend.ldap.filter     = "(uid=$)"
-
-# auth.require                 = ( "/server-status" => 
-#                                ( 
-#				  "method"  => "digest",
-#				  "realm"   => "download archiv",
-#				  "require" => "group=www|user=jan|host=192.168.2.10"
-#				),
-#				"/server-info" => 
-#                                ( 
-#				  "method"  => "digest",
-#				  "realm"   => "download archiv",
-#				  "require" => "group=www|user=jan|host=192.168.2.10"
-#				)
-#                              )

etcs/lighttpd/conf-available/10-accesslog.conf

@@ -1,3 +0,0 @@
-server.modules += ( "mod_accesslog" )
-
-accesslog.filename = "/var/log/lighttpd/access.log"

etcs/lighttpd/conf-available/10-cgi.conf

@@ -1,15 +0,0 @@
-# /usr/share/doc/lighttpd/cgi.txt
-
-server.modules += ( "mod_cgi" )
-
-$HTTP["url"] =~ "^/cgi-bin/" {
-	cgi.assign = ( "" => "" )
-}
-
-## Warning this represents a security risk, as it allow to execute any file
-## with a .pl/.py even outside of /usr/lib/cgi-bin.
-#
-#cgi.assign      = (
-#	".pl"  => "/usr/bin/perl",
-#	".py"  => "/usr/bin/python",
-#)

etcs/lighttpd/conf-available/10-dir-listing.conf

@@ -1,2 +0,0 @@
-dir-listing.encoding = "utf-8"
-server.dir-listing   = "enable"

etcs/lighttpd/conf-available/10-evasive.conf

@@ -1 +0,0 @@
-server.modules += ( "mod_evasive" )

etcs/lighttpd/conf-available/10-evhost.conf

@@ -1,5 +0,0 @@
-# http://redmine.lighttpd.net/wiki/1/Docs:ModEVhost
-
-server.modules += ( "mod_evhost" )
-
-evhost.path-pattern = "/srv/%_/htdocs"

etcs/lighttpd/conf-available/10-expire.conf

@@ -1,3 +0,0 @@
-# http://redmine.lighttpd.net/projects/lighttpd/wiki/Docs:ModExpire
-
-server.modules += ( "mod_expire" )

etcs/lighttpd/conf-available/10-fastcgi.conf

@@ -1,4 +0,0 @@
-# /usr/share/doc/lighttpd/fastcgi.txt.gz
-# http://redmine.lighttpd.net/projects/lighttpd/wiki/Docs:ConfigurationOptions#mod_fastcgi-fastcgi
-
-server.modules += ( "mod_fastcgi" )

etcs/lighttpd/conf-available/10-flv-streaming.conf

@@ -1 +0,0 @@
-server.modules += ( "mod_flv_streaming" )

etcs/lighttpd/conf-available/10-no-www.conf

@@ -1,3 +0,0 @@
-$HTTP["host"] =~ "^www\.(.*)" {
-  url.redirect = ( "^/(.*)" => "http://%1/$1" )
-}

etcs/lighttpd/conf-available/10-proxy.conf

@@ -1,25 +0,0 @@
-# /usr/share/doc/lighttpd/proxy.txt
-
-server.modules   += ( "mod_proxy" )
-
-## Balance algorithm, possible values are: "hash", "round-robin" or "fair" (default)
-# proxy.balance     = "hash" 
-
-
-## Redirect all queries to files ending with ".php" to 192.168.0.101:80 
-#proxy.server     = ( ".php" =>
-#                     ( 
-#                       ( "host" => "192.168.0.101",
-#                         "port" => 80
-#                       )
-#                     )
-#                    )
-
-## Redirect all connections on www.example.com to 10.0.0.1{0,1,2,3}
-#$HTTP["host"] == "www.example.com" {
-#  proxy.balance = "hash"
-#  proxy.server  = ( "" => ( ( "host" => "10.0.0.10" ),
-#                            ( "host" => "10.0.0.11" ),
-#                            ( "host" => "10.0.0.12" ),
-#                            ( "host" => "10.0.0.13" ) ) )
-#}

etcs/lighttpd/conf-available/10-rewrite.conf

@@ -1,4 +0,0 @@
-# /usr/share/doc/lighttpd/rewrite.txt
-# http://redmine.lighttpd.net/projects/lighttpd/wiki/Docs_ConfigurationOptions#mod_rewrite-rewriting
-
-server.modules += ( "mod_rewrite" )

etcs/lighttpd/conf-available/10-rrdtool.conf

@@ -1,10 +0,0 @@
-# /usr/share/doc/lighttpd/rrdtool.txt
-
-server.modules += ( "mod_rrdtool" )
-
-## path to the rrdtool binary
-rrdtool.binary   = "/usr/bin/rrdtool"
-
-## file to store the rrd database, will be created by lighttpd
-rrdtool.db-name   = "/var/www/lighttpd.rrd"
-

etcs/lighttpd/conf-available/10-simple-vhost.conf

@@ -1,11 +0,0 @@
-# /usr/share/doc/lighttpd/simple-vhost.txt
-
-server.modules += ( "mod_simple_vhost" )
-
-## The document root of a virtual host is document-root =
-##   simple-vhost.server-root + $HTTP["host"] + simple-vhost.document-root
-simple-vhost.server-root         = "/srv"
-simple-vhost.document-root       = "htdocs"
-
-## the default host if no host is sent
-simple-vhost.default-host        = "www.example.com"

etcs/lighttpd/conf-available/10-ssi.conf

@@ -1,5 +0,0 @@
-# /usr/share/doc/lighttpd/ssi.txt
-
-server.modules += ( "mod_ssi" )
-
-ssi.extension   = ( ".shtml" )

etcs/lighttpd/conf-available/10-ssl.conf

@@ -1,9 +0,0 @@
-# /usr/share/doc/lighttpd/ssl.txt
-
-$SERVER["socket"] == "0.0.0.0:443" {
-	ssl.engine  = "enable"
-	ssl.pemfile = "/etc/lighttpd/server.pem"
-
-	ssl.cipher-list = "ECDHE-RSA-AES256-SHA384:AES256-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH:!AESGCM"
-	ssl.honor-cipher-order = "enable"
-}

etcs/lighttpd/conf-available/10-status.conf

@@ -1,15 +0,0 @@
-# /usr/share/doc/lighttpd/status.txt
-# http://trac.lighttpd.net/trac/wiki/Docs%3AModStatus
-
-server.modules += ( "mod_status" )
-
-# status.status-url = "/server-status"
-
-# status.config-url = "/server-config"
-
-## relative URL for a plain-text page containing the internal statistics
-# status.statistics-url = "/server-statistics"
-
-## add JavaScript which allows client-side sorting for the connection overview
-## default: enable
-# status.enable-sort = "disable"

etcs/lighttpd/conf-available/10-userdir.conf

@@ -1,13 +0,0 @@
-## The userdir module provides a simple way to link user-based directories into
-## the global namespace of the webserver.
-##
-# /usr/share/doc/lighttpd/userdir.txt
-
-server.modules      += ( "mod_userdir" )
-
-## the subdirectory of a user's home dir which should be accessible
-## under http://$host/~$user
-userdir.path         = "public_html"
-
-## The users whose home directories should not be accessible
-userdir.exclude-user = ( "root", "postmaster" )

etcs/lighttpd/conf-available/10-usertrack.conf

@@ -1 +0,0 @@
-server.modules += ( "mod_usertrack" )

etcs/lighttpd/conf-available/11-extforward.conf

@@ -1,6 +0,0 @@
-# -*- depends: accesslog -*-
-
-server.modules += ( "mod_extforward" )
-
-# extforward.headers = ("X-Cluster-Client-Ip")
-# extforward.forwarder = ("10.0.0.232" => "trust")

etcs/lighttpd/conf-available/15-fastcgi-php.conf

@@ -1,20 +0,0 @@
-# -*- depends: fastcgi -*-
-# /usr/share/doc/lighttpd/fastcgi.txt.gz
-# http://redmine.lighttpd.net/projects/lighttpd/wiki/Docs:ConfigurationOptions#mod_fastcgi-fastcgi
-
-## Start an FastCGI server for php (needs the php5-cgi package)
-fastcgi.server += ( ".php" => 
-	((
-		"bin-path" => "/usr/bin/php-cgi",
-		"socket" => "/var/run/lighttpd/php.socket",
-		"max-procs" => 1,
-		"bin-environment" => ( 
-			"PHP_FCGI_CHILDREN" => "4",
-			"PHP_FCGI_MAX_REQUESTS" => "10000"
-		),
-		"bin-copy-environment" => (
-			"PATH", "SHELL", "USER"
-		),
-		"broken-scriptfilename" => "enable"
-	))
-)

etcs/lighttpd/conf-available/90-debian-doc.conf

@@ -1,15 +0,0 @@
-#### handle Debian Policy Manual, Section 11.5. urls
-## by default allow them only from localhost
-$HTTP["remoteip"] =~ "^127\.0\.0\.1$|^::1$" {
-        alias.url += (
-		"/cgi-bin/" => "/usr/lib/cgi-bin/",
-                "/doc/" => "/usr/share/doc/",
-                "/images/" => "/usr/share/images/"
-        )
-        $HTTP["url"] =~ "^/doc/|^/images/" {
-                dir-listing.activate = "enable"
-        }
-        $HTTP["url"] =~ "^/cgi-bin/" {
-                cgi.assign = ( "" => "" )
-        }
-}

etcs/lighttpd/conf-available/90-javascript-alias.conf

@@ -1 +0,0 @@
-alias.url += ("/javascript" => "/usr/share/javascript")

etcs/lighttpd/conf-available/README

@@ -1,22 +0,0 @@
-ligghttpd Configuration under Debian GNU/Linux
-==============================================
-
-Files and Directories in /etc/lighttpd:
----------------------------------------
-
-lighttpd.conf:
-	 main configuration file
-
-conf-available/
-	This directory contains a series of .conf files. These files contain
-        configuration directives necessary to load and run webserver modules.
-	If you want to create your own files they names should be
-        build as nn-name.conf where "nn" is two digit number (number
-	is used to find order for loading files)
-
-conf-enabled/	  
-	To actually enable a module for lighttpd, it is necessary to create a 
-        symlink in this directory to the .conf file in conf-available/.
-
-Enabling and disabling modules could be done by provided
-/usr/sbin/lighty-enable-mod and /usr/sbin/lighty-disable-mod scripts. 

etcs/lighttpd/conf-enabled/90-javascript-alias.conf

@@ -1 +0,0 @@
-../conf-available/90-javascript-alias.conf

etcs/lighttpd/lighttpd.conf

@@ -2,10 +2,10 @@ server.modules = (
 	"mod_access",
 	"mod_alias",
 	"mod_compress",
- 	"mod_redirect",
+ 	"mod_redirect"
 )
 
-server.document-root        = "/home/terahz/TeraHz/frontend"
+server.document-root        = "/var/www/html"
 server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
 server.errorlog             = "/var/log/lighttpd/error.log"
 server.pid-file             = "/var/run/lighttpd.pid"

etcs/rc.local

@@ -10,10 +10,5 @@
 # bits.
 #
 # By default this script does nothing.
-
+/usr/local/lib/terahz/run.sh &
-# Print the IP address
+disown
-
-cd /home/pi/TeraHz/backend
-service lighttpd start
-flask run -h 0.0.0.0 &
-exit 0

etcs/resolvconf.conf

@@ -1,14 +0,0 @@
-# Configuration for resolvconf(8)
-# See resolvconf.conf(5) for details
-
-resolv_conf=/etc/resolv.conf
-# If you run a local name server, you should uncomment the below line and
-# configure your subscribers configuration files below.
-name_servers=1.1.1.1
-
-# Mirror the Debian package defaults for the below resolvers
-# so that resolvconf integrates seemlessly.
-#dnsmasq_resolv=/var/run/dnsmasq/resolv.conf
-#pdnsd_conf=/etc/pdnsd.conf
-#unbound_conf=/var/cache/unbound/resolvconf_resolvers.conf
-resolvconf=NO

frontend/frontend.js

@@ -1,56 +1,46 @@
 // All code in this file is licensed under the ISC license, provided in LICENSE.txt
-var globalObject;
 $('#update').click(function () {
   updateData();
 });
 // jQuery event binder
 
 function updateData () {
-  // download data from backend into obj
   const url = 'http://' + window.location.hostname + ':5000/data';
-  // I understand how bad this line looks. Please don't judge me...
+  $.ajax({ // spawn an AJAX request
-  $.get(url, function (data, status) { // standard jQuery AJAX
+    url: url,
-    globalObject = data;
+    success: function (data, status) {
-  })
+      console.log(data);
-    .done(function () {
+      graphSpectralData(data[0], 0);
-      fillTable(globalObject, $('#specter'));
+      fillTableData(data);
-      graphSpectralData(globalObject, $('#spectrogram'));
+    },
-      fillLuxUv(globalObject, $('#luxuv'));
+    timeout: 2500 // this should be a pretty sane timeout
-    });
+  });
-}
-
-function fillTable (obj, dom) {
-  // applies data in obj[0] to HTML tags with the obj's key as ID.
-  // useful mostly for slapping spectrometer JSON into HTML tables.
-  for (var i in obj[0]) {
-    $(dom).find('#' + i).text(obj[0][i]);
-  }
 }
 
 function graphSpectralData (obj, dom) {
-  // graphs the data from obj[0] into canvas at dom
+  // graph spectral data in obj into dom
-  var arr = [];
+  var graphPoints = [];
-  ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'R', 'I', 'S', 'J', 'T', 'U', 'V', 'W', 'K', 'L'].forEach(function (i) {
+  var graphXTicks = [];
-    arr.push(obj[0][i]);
+
-  });
+  Object.keys(obj).forEach((element, index) => {
-  var chart = new Chart(dom, {
+    graphPoints.push([index, obj[element]]); // build array of points
-    type: 'line',
+    graphXTicks.push([index, element]); // build array of axis labels
-    data: {
-      labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'R', 'I', 'S', 'J', 'T', 'U', 'V', 'W', 'K', 'L'],
-      datasets: [{
-        label: 'Spectrometer data',
-        data: arr
-      }]
-    },
-    options: {
-      responsive: false
-    }
   });
+  // console.log(graphPoints);
+  const options = {
+    grid: {color: 'white'},
+    xaxis: {ticks: graphXTicks}
+  };
+  $.plot('#graph', [graphPoints], options);
+  // flot expects an array of arrays (lines) of 2-element arrays (points)
 }
 
-function fillLuxUv (obj, dom) {
+function fillTableData (obj) {
-  $(dom).find('#lx').text(obj[1]);
+  // fill the obj data into HTML tables
-  $(dom).find('#uva').text(obj[2][0]);
+  Object.keys(obj[0])
-  $(dom).find('#uvb').text(obj[2][1]);
+    .forEach((element) => { $('#' + element).text(obj[0][element]); });
-  $(dom).find('#uvi').text(obj[2][2]);
+  $('#lx').text(obj[1]);
+  $('#uva').text(obj[2][0]);
+  $('#uvb').text(obj[2][1]);
+  $('#uvi').text(obj[2][2]);
 }

frontend/index.html

@@ -10,16 +10,17 @@
 
 <body>
   <div class="container text-center">
-    <h1>TeraHz</h1>
+    <h1><img src="lib/logo-sq.png" height="64px">TeraHz</h1>
+
   </div>
   <div class="container">
     <button id="update" class="btn btn-primary m-1 float-right">Get data</button>
     <p id="debug">
     </p>
     <h3>Spectrogram</h3>
-    <canvas id="spectrogram" width="640px" height="480"></canvas>
+    <div id="graph" style="height:480px;width:720px"></div>
     <h3>Spectral readings</h3>
-    <table class="table table-sm" id="specter">
+    <table class="table table-dark table-sm" id="specter">
       <thead class="thead-dark">
         <tr>
           <th>Band</th>
@@ -120,7 +121,7 @@
     </table>
     <br>
     <h3>Lux and UV readings</h3>
-    <table class="table" id="luxuv">
+    <table class="table-dark table" id="luxuv">
       <thead class="thead-dark">
         <tr>
           <th>Parameter</th>
@@ -147,8 +148,15 @@
   </div>
   <script src="lib/bootstrap.bundle.min.js"></script>
   <script src="lib/jquery-3.4.1.min.js"></script>
-  <script src="lib/chart.bundle.js"></script>
+  <script src="lib/flot/jquery.flot.js"></script>
   <script src="frontend.js"></script>
+  <script src="lib/flot/jquery.canvaswrapper.js"></script>
+  <script src="lib/flot/jquery.colorhelpers.js"></script>
+  <script src="lib/flot/jquery.flot.js"></script>
+  <script src="lib/flot/jquery.flot.saturated.js"></script>
+  <script src="lib/flot/jquery.flot.browser.js"></script>
+  <script src="lib/flot/jquery.flot.drawSeries.js"></script>
+  <script src="lib/flot/jquery.flot.uiConstants.js"></script>
 </body>
 
 </html>

frontend/lib/flot/jquery.canvaswrapper.js

@@ -0,0 +1,550 @@
+/** ## jquery.flot.canvaswrapper
+
+This plugin contains the function for creating and manipulating both the canvas
+layers and svg layers.
+
+The Canvas object is a wrapper around an HTML5 canvas tag.
+The constructor Canvas(cls, container) takes as parameters cls,
+the list of classes to apply to the canvas adnd the containter,
+element onto which to append the canvas. The canvas operations
+don't work unless the canvas is attached to the DOM.
+
+### jquery.canvaswrapper.js API functions
+*/
+
+(function($) {
+    var Canvas = function(cls, container) {
+        var element = container.getElementsByClassName(cls)[0];
+
+        if (!element) {
+            element = document.createElement('canvas');
+            element.className = cls;
+            element.style.direction = 'ltr';
+            element.style.position = 'absolute';
+            element.style.left = '0px';
+            element.style.top = '0px';
+
+            container.appendChild(element);
+
+            // If HTML5 Canvas isn't available, throw
+
+            if (!element.getContext) {
+                throw new Error('Canvas is not available.');
+            }
+        }
+
+        this.element = element;
+
+        var context = this.context = element.getContext('2d');
+        this.pixelRatio = $.plot.browser.getPixelRatio(context);
+
+        // Size the canvas to match the internal dimensions of its container
+        var width = $(container).width();
+        var height = $(container).height();
+        this.resize(width, height);
+
+        // Collection of HTML div layers for text overlaid onto the canvas
+
+        this.SVGContainer = null;
+        this.SVG = {};
+
+        // Cache of text fragments and metrics, so we can avoid expensively
+        // re-calculating them when the plot is re-rendered in a loop.
+
+        this._textCache = {};
+    }
+
+    /**
+    - resize(width, height)
+
+     Resizes the canvas to the given dimensions.
+     The width represents the new width of the canvas, meanwhile the height
+     is the new height of the canvas, both of them in pixels.
+    */
+
+    Canvas.prototype.resize = function(width, height) {
+        var minSize = 10;
+        width = width < minSize ? minSize : width;
+        height = height < minSize ? minSize : height;
+
+        var element = this.element,
+            context = this.context,
+            pixelRatio = this.pixelRatio;
+
+        // Resize the canvas, increasing its density based on the display's
+        // pixel ratio; basically giving it more pixels without increasing the
+        // size of its element, to take advantage of the fact that retina
+        // displays have that many more pixels in the same advertised space.
+
+        // Resizing should reset the state (excanvas seems to be buggy though)
+
+        if (this.width !== width) {
+            element.width = width * pixelRatio;
+            element.style.width = width + 'px';
+            this.width = width;
+        }
+
+        if (this.height !== height) {
+            element.height = height * pixelRatio;
+            element.style.height = height + 'px';
+            this.height = height;
+        }
+
+        // Save the context, so we can reset in case we get replotted.  The
+        // restore ensure that we're really back at the initial state, and
+        // should be safe even if we haven't saved the initial state yet.
+
+        context.restore();
+        context.save();
+
+        // Scale the coordinate space to match the display density; so even though we
+        // may have twice as many pixels, we still want lines and other drawing to
+        // appear at the same size; the extra pixels will just make them crisper.
+
+        context.scale(pixelRatio, pixelRatio);
+    };
+
+    /**
+    - clear()
+
+     Clears the entire canvas area, not including any overlaid HTML text
+    */
+    Canvas.prototype.clear = function() {
+        this.context.clearRect(0, 0, this.width, this.height);
+    };
+
+    /**
+    - render()
+
+     Finishes rendering the canvas, including managing the text overlay.
+    */
+    Canvas.prototype.render = function() {
+        var cache = this._textCache;
+
+        // For each text layer, add elements marked as active that haven't
+        // already been rendered, and remove those that are no longer active.
+
+        for (var layerKey in cache) {
+            if (hasOwnProperty.call(cache, layerKey)) {
+                var layer = this.getSVGLayer(layerKey),
+                    layerCache = cache[layerKey];
+
+                var display = layer.style.display;
+                layer.style.display = 'none';
+
+                for (var styleKey in layerCache) {
+                    if (hasOwnProperty.call(layerCache, styleKey)) {
+                        var styleCache = layerCache[styleKey];
+                        for (var key in styleCache) {
+                            if (hasOwnProperty.call(styleCache, key)) {
+                                var val = styleCache[key],
+                                    positions = val.positions;
+
+                                for (var i = 0, position; positions[i]; i++) {
+                                    position = positions[i];
+                                    if (position.active) {
+                                        if (!position.rendered) {
+                                            layer.appendChild(position.element);
+                                            position.rendered = true;
+                                        }
+                                    } else {
+                                        positions.splice(i--, 1);
+                                        if (position.rendered) {
+                                            while (position.element.firstChild) {
+                                                position.element.removeChild(position.element.firstChild);
+                                            }
+                                            position.element.parentNode.removeChild(position.element);
+                                        }
+                                    }
+                                }
+
+                                if (positions.length === 0) {
+                                    if (val.measured) {
+                                        val.measured = false;
+                                    } else {
+                                        delete styleCache[key];
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                layer.style.display = display;
+            }
+        }
+    };
+
+    /**
+    - getSVGLayer(classes)
+
+     Creates (if necessary) and returns the SVG overlay container.
+     The classes string represents the string of space-separated CSS classes
+     used to uniquely identify the text layer. It return the svg-layer div.
+    */
+    Canvas.prototype.getSVGLayer = function(classes) {
+        var layer = this.SVG[classes];
+
+        // Create the SVG layer if it doesn't exist
+
+        if (!layer) {
+            // Create the svg layer container, if it doesn't exist
+
+            var svgElement;
+
+            if (!this.SVGContainer) {
+                this.SVGContainer = document.createElement('div');
+                this.SVGContainer.className = 'flot-svg';
+                this.SVGContainer.style.position = 'absolute';
+                this.SVGContainer.style.top = '0px';
+                this.SVGContainer.style.left = '0px';
+                this.SVGContainer.style.height = '100%';
+                this.SVGContainer.style.width = '100%';
+                this.SVGContainer.style.pointerEvents = 'none';
+                this.element.parentNode.appendChild(this.SVGContainer);
+
+                svgElement = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
+                svgElement.style.width = '100%';
+                svgElement.style.height = '100%';
+
+                this.SVGContainer.appendChild(svgElement);
+            } else {
+                svgElement = this.SVGContainer.firstChild;
+            }
+
+            layer = document.createElementNS('http://www.w3.org/2000/svg', 'g');
+            layer.setAttribute('class', classes);
+            layer.style.position = 'absolute';
+            layer.style.top = '0px';
+            layer.style.left = '0px';
+            layer.style.bottom = '0px';
+            layer.style.right = '0px';
+            svgElement.appendChild(layer);
+            this.SVG[classes] = layer;
+        }
+
+        return layer;
+    };
+
+    /**
+    - getTextInfo(layer, text, font, angle, width)
+
+     Creates (if necessary) and returns a text info object.
+     The object looks like this:
+     ```js
+     {
+         width //Width of the text's wrapper div.
+         height //Height of the text's wrapper div.
+         element //The HTML div containing the text.
+         positions //Array of positions at which this text is drawn.
+      }
+      ```
+      The positions array contains objects that look like this:
+      ```js
+      {
+         active //Flag indicating whether the text should be visible.
+         rendered //Flag indicating whether the text is currently visible.
+         element //The HTML div containing the text.
+         text //The actual text and is identical with element[0].textContent.
+         x //X coordinate at which to draw the text.
+         y //Y coordinate at which to draw the text.
+      }
+      ```
+      Each position after the first receives a clone of the original element.
+      The idea is that that the width, height, and general 'identity' of the
+      text is constant no matter where it is placed; the placements are a
+      secondary property.
+
+      Canvas maintains a cache of recently-used text info objects; getTextInfo
+      either returns the cached element or creates a new entry.
+
+     The layer parameter is string of space-separated CSS classes uniquely
+     identifying the layer containing this text.
+     Text is the text string to retrieve info for.
+     Font is either a string of space-separated CSS classes or a font-spec object,
+     defining the text's font and style.
+     Angle is the angle at which to rotate the text, in degrees. Angle is currently unused,
+     it will be implemented in the future.
+     The last parameter is the Maximum width of the text before it wraps.
+     The method returns a text info object.
+    */
+    Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) {
+        var textStyle, layerCache, styleCache, info;
+
+        // Cast the value to a string, in case we were given a number or such
+
+        text = '' + text;
+
+        // If the font is a font-spec object, generate a CSS font definition
+
+        if (typeof font === 'object') {
+            textStyle = font.style + ' ' + font.variant + ' ' + font.weight + ' ' + font.size + 'px/' + font.lineHeight + 'px ' + font.family;
+        } else {
+            textStyle = font;
+        }
+
+        // Retrieve (or create) the cache for the text's layer and styles
+
+        layerCache = this._textCache[layer];
+
+        if (layerCache == null) {
+            layerCache = this._textCache[layer] = {};
+        }
+
+        styleCache = layerCache[textStyle];
+
+        if (styleCache == null) {
+            styleCache = layerCache[textStyle] = {};
+        }
+
+        var key = generateKey(text);
+        info = styleCache[key];
+
+        // If we can't find a matching element in our cache, create a new one
+
+        if (!info) {
+            var element = document.createElementNS('http://www.w3.org/2000/svg', 'text');
+            if (text.indexOf('<br>') !== -1) {
+                addTspanElements(text, element, -9999);
+            } else {
+                var textNode = document.createTextNode(text);
+                element.appendChild(textNode);
+            }
+
+            element.style.position = 'absolute';
+            element.style.maxWidth = width;
+            element.setAttributeNS(null, 'x', -9999);
+            element.setAttributeNS(null, 'y', -9999);
+
+            if (typeof font === 'object') {
+                element.style.font = textStyle;
+                element.style.fill = font.fill;
+            } else if (typeof font === 'string') {
+                element.setAttribute('class', font);
+            }
+
+            this.getSVGLayer(layer).appendChild(element);
+            var elementRect = element.getBBox();
+
+            info = styleCache[key] = {
+                width: elementRect.width,
+                height: elementRect.height,
+                measured: true,
+                element: element,
+                positions: []
+            };
+
+            //remove elements from dom
+            while (element.firstChild) {
+                element.removeChild(element.firstChild);
+            }
+            element.parentNode.removeChild(element);
+        }
+
+        info.measured = true;
+        return info;
+    };
+
+    function updateTransforms (element, transforms) {
+        element.transform.baseVal.clear();
+        if (transforms) {
+            transforms.forEach(function(t) {
+                element.transform.baseVal.appendItem(t);
+            });
+        }
+    }
+
+    /**
+    - addText (layer, x, y, text, font, angle, width, halign, valign, transforms)
+
+     Adds a text string to the canvas text overlay.
+     The text isn't drawn immediately; it is marked as rendering, which will
+     result in its addition to the canvas on the next render pass.
+
+     The layer is string of space-separated CSS classes uniquely
+     identifying the layer containing this text.
+     X and Y represents the X and Y coordinate at which to draw the text.
+     and text is the string to draw
+    */
+    Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign, transforms) {
+        var info = this.getTextInfo(layer, text, font, angle, width),
+            positions = info.positions;
+
+        // Tweak the div's position to match the text's alignment
+
+        if (halign === 'center') {
+            x -= info.width / 2;
+        } else if (halign === 'right') {
+            x -= info.width;
+        }
+
+        if (valign === 'middle') {
+            y -= info.height / 2;
+        } else if (valign === 'bottom') {
+            y -= info.height;
+        }
+
+        y += 0.75 * info.height;
+
+
+        // Determine whether this text already exists at this position.
+        // If so, mark it for inclusion in the next render pass.
+
+        for (var i = 0, position; positions[i]; i++) {
+            position = positions[i];
+            if (position.x === x && position.y === y && position.text === text) {
+                position.active = true;
+                // update the transforms
+                updateTransforms(position.element, transforms);
+
+                return;
+            } else if (position.active === false) {
+                position.active = true;
+                position.text = text;
+                if (text.indexOf('<br>') !== -1) {
+                    y -= 0.25 * info.height;
+                    addTspanElements(text, position.element, x);
+                } else {
+                    position.element.textContent = text;
+                }
+                position.element.setAttributeNS(null, 'x', x);
+                position.element.setAttributeNS(null, 'y', y);
+                position.x = x;
+                position.y = y;
+                // update the transforms
+                updateTransforms(position.element, transforms);
+
+                return;
+            }
+        }
+
+        // If the text doesn't exist at this position, create a new entry
+
+        // For the very first position we'll re-use the original element,
+        // while for subsequent ones we'll clone it.
+
+        position = {
+            active: true,
+            rendered: false,
+            element: positions.length ? info.element.cloneNode() : info.element,
+            text: text,
+            x: x,
+            y: y
+        };
+
+        positions.push(position);
+
+        if (text.indexOf('<br>') !== -1) {
+            y -= 0.25 * info.height;
+            addTspanElements(text, position.element, x);
+        } else {
+            position.element.textContent = text;
+        }
+
+        // Move the element to its final position within the container
+        position.element.setAttributeNS(null, 'x', x);
+        position.element.setAttributeNS(null, 'y', y);
+        position.element.style.textAlign = halign;
+        // update the transforms
+        updateTransforms(position.element, transforms);
+   };
+
+    var addTspanElements = function(text, element, x) {
+        var lines = text.split('<br>'),
+            tspan, i, offset;
+
+        for (i = 0; i < lines.length; i++) {
+            if (!element.childNodes[i]) {
+                tspan = document.createElementNS('http://www.w3.org/2000/svg', 'tspan');
+                element.appendChild(tspan);
+            } else {
+                tspan = element.childNodes[i];
+            }
+            tspan.textContent = lines[i];
+            offset = i * 1 + 'em';
+            tspan.setAttributeNS(null, 'dy', offset);
+            tspan.setAttributeNS(null, 'x', x);
+        }
+    }
+
+    /**
+    - removeText (layer, x, y, text, font, angle)
+
+      The function removes one or more text strings from the canvas text overlay.
+      If no parameters are given, all text within the layer is removed.
+
+      Note that the text is not immediately removed; it is simply marked as
+      inactive, which will result in its removal on the next render pass.
+      This avoids the performance penalty for 'clear and redraw' behavior,
+      where we potentially get rid of all text on a layer, but will likely
+      add back most or all of it later, as when redrawing axes, for example.
+
+      The layer is a string of space-separated CSS classes uniquely
+      identifying the layer containing this text. The following parameter are
+      X and Y coordinate of the text.
+      Text is the string to remove, while the font is either a string of space-separated CSS
+      classes or a font-spec object, defining the text's font and style.
+     */
+    Canvas.prototype.removeText = function(layer, x, y, text, font, angle) {
+        var info, htmlYCoord;
+        if (text == null) {
+            var layerCache = this._textCache[layer];
+            if (layerCache != null) {
+                for (var styleKey in layerCache) {
+                    if (hasOwnProperty.call(layerCache, styleKey)) {
+                        var styleCache = layerCache[styleKey];
+                        for (var key in styleCache) {
+                            if (hasOwnProperty.call(styleCache, key)) {
+                                var positions = styleCache[key].positions;
+                                positions.forEach(function(position) {
+                                    position.active = false;
+                                });
+                            }
+                        }
+                    }
+                }
+            }
+        } else {
+            info = this.getTextInfo(layer, text, font, angle);
+            positions = info.positions;
+            positions.forEach(function(position) {
+                htmlYCoord = y + 0.75 * info.height;
+                if (position.x === x && position.y === htmlYCoord && position.text === text) {
+                    position.active = false;
+                }
+            });
+        }
+    };
+
+    /**
+    - clearCache()
+
+     Clears the cache used to speed up the text size measurements.
+     As an (unfortunate) side effect all text within the text Layer is removed.
+     Use this function before plot.setupGrid() and plot.draw() if the plot just
+     became visible or the styles changed.
+    */
+    Canvas.prototype.clearCache = function() {
+        var cache = this._textCache;
+        for (var layerKey in cache) {
+            if (hasOwnProperty.call(cache, layerKey)) {
+                var layer = this.getSVGLayer(layerKey);
+                while (layer.firstChild) {
+                    layer.removeChild(layer.firstChild);
+                }
+            }
+        };
+
+        this._textCache = {};
+    };
+
+    function generateKey(text) {
+        return text.replace(/0|1|2|3|4|5|6|7|8|9/g, '0');
+    }
+
+    if (!window.Flot) {
+        window.Flot = {};
+    }
+
+    window.Flot.Canvas = Canvas;
+})(jQuery);

frontend/lib/flot/jquery.colorhelpers.js

@@ -0,0 +1,199 @@
+/* Plugin for jQuery for working with colors.
+ *
+ * Version 1.1.
+ *
+ * Inspiration from jQuery color animation plugin by John Resig.
+ *
+ * Released under the MIT license by Ole Laursen, October 2009.
+ *
+ * Examples:
+ *
+ *   $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
+ *   var c = $.color.extract($("#mydiv"), 'background-color');
+ *   console.log(c.r, c.g, c.b, c.a);
+ *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
+ *
+ * Note that .scale() and .add() return the same modified object
+ * instead of making a new one.
+ *
+ * V. 1.1: Fix error handling so e.g. parsing an empty string does
+ * produce a color rather than just crashing.
+ */
+
+(function($) {
+    $.color = {};
+
+    // construct color object with some convenient chainable helpers
+    $.color.make = function (r, g, b, a) {
+        var o = {};
+        o.r = r || 0;
+        o.g = g || 0;
+        o.b = b || 0;
+        o.a = a != null ? a : 1;
+
+        o.add = function (c, d) {
+            for (var i = 0; i < c.length; ++i) {
+                o[c.charAt(i)] += d;
+            }
+
+            return o.normalize();
+        };
+
+        o.scale = function (c, f) {
+            for (var i = 0; i < c.length; ++i) {
+                o[c.charAt(i)] *= f;
+            }
+
+            return o.normalize();
+        };
+
+        o.toString = function () {
+            if (o.a >= 1.0) {
+                return "rgb(" + [o.r, o.g, o.b].join(",") + ")";
+            } else {
+                return "rgba(" + [o.r, o.g, o.b, o.a].join(",") + ")";
+            }
+        };
+
+        o.normalize = function () {
+            function clamp(min, value, max) {
+                return value < min ? min : (value > max ? max : value);
+            }
+
+            o.r = clamp(0, parseInt(o.r), 255);
+            o.g = clamp(0, parseInt(o.g), 255);
+            o.b = clamp(0, parseInt(o.b), 255);
+            o.a = clamp(0, o.a, 1);
+            return o;
+        };
+
+        o.clone = function () {
+            return $.color.make(o.r, o.b, o.g, o.a);
+        };
+
+        return o.normalize();
+    }
+
+    // extract CSS color property from element, going up in the DOM
+    // if it's "transparent"
+    $.color.extract = function (elem, css) {
+        var c;
+
+        do {
+            c = elem.css(css).toLowerCase();
+            // keep going until we find an element that has color, or
+            // we hit the body or root (have no parent)
+            if (c !== '' && c !== 'transparent') {
+                break;
+            }
+
+            elem = elem.parent();
+        } while (elem.length && !$.nodeName(elem.get(0), "body"));
+
+        // catch Safari's way of signalling transparent
+        if (c === "rgba(0, 0, 0, 0)") {
+            c = "transparent";
+        }
+
+        return $.color.parse(c);
+    }
+
+    // parse CSS color string (like "rgb(10, 32, 43)" or "#fff"),
+    // returns color object, if parsing failed, you get black (0, 0,
+    // 0) out
+    $.color.parse = function (str) {
+        var res, m = $.color.make;
+
+        // Look for rgb(num,num,num)
+        res = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str);
+        if (res) {
+            return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10));
+        }
+
+        // Look for rgba(num,num,num,num)
+        res = /rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str)
+        if (res) {
+            return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10), parseFloat(res[4]));
+        }
+
+        // Look for rgb(num%,num%,num%)
+        res = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*\)/.exec(str);
+        if (res) {
+            return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55);
+        }
+
+        // Look for rgba(num%,num%,num%,num)
+        res = /rgba\(\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str);
+        if (res) {
+            return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55, parseFloat(res[4]));
+        }
+
+        // Look for #a0b1c2
+        res = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str);
+        if (res) {
+            return m(parseInt(res[1], 16), parseInt(res[2], 16), parseInt(res[3], 16));
+        }
+
+        // Look for #fff
+        res = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str);
+        if (res) {
+            return m(parseInt(res[1] + res[1], 16), parseInt(res[2] + res[2], 16), parseInt(res[3] + res[3], 16));
+        }
+
+        // Otherwise, we're most likely dealing with a named color
+        var name = $.trim(str).toLowerCase();
+        if (name === "transparent") {
+            return m(255, 255, 255, 0);
+        } else {
+            // default to black
+            res = lookupColors[name] || [0, 0, 0];
+            return m(res[0], res[1], res[2]);
+        }
+    }
+
+    var lookupColors = {
+        aqua: [0, 255, 255],
+        azure: [240, 255, 255],
+        beige: [245, 245, 220],
+        black: [0, 0, 0],
+        blue: [0, 0, 255],
+        brown: [165, 42, 42],
+        cyan: [0, 255, 255],
+        darkblue: [0, 0, 139],
+        darkcyan: [0, 139, 139],
+        darkgrey: [169, 169, 169],
+        darkgreen: [0, 100, 0],
+        darkkhaki: [189, 183, 107],
+        darkmagenta: [139, 0, 139],
+        darkolivegreen: [85, 107, 47],
+        darkorange: [255, 140, 0],
+        darkorchid: [153, 50, 204],
+        darkred: [139, 0, 0],
+        darksalmon: [233, 150, 122],
+        darkviolet: [148, 0, 211],
+        fuchsia: [255, 0, 255],
+        gold: [255, 215, 0],
+        green: [0, 128, 0],
+        indigo: [75, 0, 130],
+        khaki: [240, 230, 140],
+        lightblue: [173, 216, 230],
+        lightcyan: [224, 255, 255],
+        lightgreen: [144, 238, 144],
+        lightgrey: [211, 211, 211],
+        lightpink: [255, 182, 193],
+        lightyellow: [255, 255, 224],
+        lime: [0, 255, 0],
+        magenta: [255, 0, 255],
+        maroon: [128, 0, 0],
+        navy: [0, 0, 128],
+        olive: [128, 128, 0],
+        orange: [255, 165, 0],
+        pink: [255, 192, 203],
+        purple: [128, 0, 128],
+        violet: [128, 0, 128],
+        red: [255, 0, 0],
+        silver: [192, 192, 192],
+        white: [255, 255, 255],
+        yellow: [255, 255, 0]
+    };
+})(jQuery);

frontend/lib/flot/jquery.flot.axislabels.js

@@ -0,0 +1,212 @@
+/*
+Axis label plugin for flot
+
+Derived from:
+Axis Labels Plugin for flot.
+http://github.com/markrcote/flot-axislabels
+
+Original code is Copyright (c) 2010 Xuan Luo.
+Original code was released under the GPLv3 license by Xuan Luo, September 2010.
+Original code was rereleased under the MIT license by Xuan Luo, April 2012.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+(function($) {
+    "use strict";
+
+    var options = {
+        axisLabels: {
+            show: true
+        }
+    };
+
+    function AxisLabel(axisName, position, padding, placeholder, axisLabel, surface) {
+        this.axisName = axisName;
+        this.position = position;
+        this.padding = padding;
+        this.placeholder = placeholder;
+        this.axisLabel = axisLabel;
+        this.surface = surface;
+        this.width = 0;
+        this.height = 0;
+        this.elem = null;
+    }
+
+    AxisLabel.prototype.calculateSize = function() {
+        var axisId = this.axisName + 'Label',
+            layerId = axisId + 'Layer',
+            className = axisId + ' axisLabels';
+
+        var info = this.surface.getTextInfo(layerId, this.axisLabel, className);
+        this.labelWidth = info.width;
+        this.labelHeight = info.height;
+
+        if (this.position === 'left' || this.position === 'right') {
+            this.width = this.labelHeight + this.padding;
+            this.height = 0;
+        } else {
+            this.width = 0;
+            this.height = this.labelHeight + this.padding;
+        }
+    };
+
+    AxisLabel.prototype.transforms = function(degrees, x, y, svgLayer) {
+        var transforms = [], translate, rotate;
+        if (x !== 0 || y !== 0) {
+            translate = svgLayer.createSVGTransform();
+            translate.setTranslate(x, y);
+            transforms.push(translate);
+        }
+        if (degrees !== 0) {
+            rotate = svgLayer.createSVGTransform();
+            var centerX = Math.round(this.labelWidth / 2),
+                centerY = 0;
+            rotate.setRotate(degrees, centerX, centerY);
+            transforms.push(rotate);
+        }
+
+        return transforms;
+    };
+
+    AxisLabel.prototype.calculateOffsets = function(box) {
+        var offsets = {
+            x: 0,
+            y: 0,
+            degrees: 0
+        };
+        if (this.position === 'bottom') {
+            offsets.x = box.left + box.width / 2 - this.labelWidth / 2;
+            offsets.y = box.top + box.height - this.labelHeight;
+        } else if (this.position === 'top') {
+            offsets.x = box.left + box.width / 2 - this.labelWidth / 2;
+            offsets.y = box.top;
+        } else if (this.position === 'left') {
+            offsets.degrees = -90;
+            offsets.x = box.left - this.labelWidth / 2;
+            offsets.y = box.height / 2 + box.top;
+        } else if (this.position === 'right') {
+            offsets.degrees = 90;
+            offsets.x = box.left + box.width - this.labelWidth / 2;
+            offsets.y = box.height / 2 + box.top;
+        }
+        offsets.x = Math.round(offsets.x);
+        offsets.y = Math.round(offsets.y);
+
+        return offsets;
+    };
+
+    AxisLabel.prototype.cleanup = function() {
+        var axisId = this.axisName + 'Label',
+            layerId = axisId + 'Layer',
+            className = axisId + ' axisLabels';
+        this.surface.removeText(layerId, 0, 0, this.axisLabel, className);
+    };
+
+    AxisLabel.prototype.draw = function(box) {
+        var axisId = this.axisName + 'Label',
+            layerId = axisId + 'Layer',
+            className = axisId + ' axisLabels',
+            offsets = this.calculateOffsets(box),
+            style = {
+                position: 'absolute',
+                bottom: '',
+                right: '',
+                display: 'inline-block',
+                'white-space': 'nowrap'
+            };
+
+        var layer = this.surface.getSVGLayer(layerId);
+        var transforms = this.transforms(offsets.degrees, offsets.x, offsets.y, layer.parentNode);
+
+        this.surface.addText(layerId, 0, 0, this.axisLabel, className, undefined, undefined, undefined, undefined, transforms);
+        this.surface.render();
+        Object.keys(style).forEach(function(key) {
+            layer.style[key] = style[key];
+        });
+    };
+
+    function init(plot) {
+        plot.hooks.processOptions.push(function(plot, options) {
+            if (!options.axisLabels.show) {
+                return;
+            }
+
+            var axisLabels = {};
+            var defaultPadding = 2; // padding between axis and tick labels
+
+            plot.hooks.axisReserveSpace.push(function(plot, axis) {
+                var opts = axis.options;
+                var axisName = axis.direction + axis.n;
+
+                axis.labelHeight += axis.boxPosition.centerY;
+                axis.labelWidth += axis.boxPosition.centerX;
+
+                if (!opts || !opts.axisLabel || !axis.show) {
+                    return;
+                }
+
+                var padding = opts.axisLabelPadding === undefined
+                    ? defaultPadding
+                    : opts.axisLabelPadding;
+
+                var axisLabel = axisLabels[axisName];
+                if (!axisLabel) {
+                    axisLabel = new AxisLabel(axisName,
+                        opts.position, padding,
+                        plot.getPlaceholder()[0], opts.axisLabel, plot.getSurface());
+                    axisLabels[axisName] = axisLabel;
+                }
+
+                axisLabel.calculateSize();
+
+                // Incrementing the sizes of the tick labels.
+                axis.labelHeight += axisLabel.height;
+                axis.labelWidth += axisLabel.width;
+            });
+
+            // TODO - use the drawAxis hook
+            plot.hooks.draw.push(function(plot, ctx) {
+                $.each(plot.getAxes(), function(flotAxisName, axis) {
+                    var opts = axis.options;
+                    if (!opts || !opts.axisLabel || !axis.show) {
+                        return;
+                    }
+
+                    var axisName = axis.direction + axis.n;
+                    axisLabels[axisName].draw(axis.box);
+                });
+            });
+
+            plot.hooks.shutdown.push(function(plot, eventHolder) {
+                for (var axisName in axisLabels) {
+                    axisLabels[axisName].cleanup();
+                }
+            });
+        });
+    };
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'axisLabels',
+        version: '3.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.browser.js

@@ -0,0 +1,98 @@
+/** ## jquery.flot.browser.js
+
+This plugin is used to make available some browser-related utility functions.
+
+### Methods
+*/
+
+(function ($) {
+    'use strict';
+
+    var browser = {
+        /**
+        - getPageXY(e)
+
+         Calculates the pageX and pageY using the screenX, screenY properties of the event
+         and the scrolling of the page. This is needed because the pageX and pageY
+         properties of the event are not correct while running tests in Edge. */
+        getPageXY: function (e) {
+            // This code is inspired from https://stackoverflow.com/a/3464890
+            var doc = document.documentElement,
+                pageX = e.clientX + (window.pageXOffset || doc.scrollLeft) - (doc.clientLeft || 0),
+                pageY = e.clientY + (window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0);
+            return { X: pageX, Y: pageY };
+        },
+
+        /**
+        - getPixelRatio(context)
+
+         This function returns the current pixel ratio defined by the product of desktop
+         zoom and page zoom.
+         Additional info: https://www.html5rocks.com/en/tutorials/canvas/hidpi/
+        */
+        getPixelRatio: function(context) {
+            var devicePixelRatio = window.devicePixelRatio || 1,
+                backingStoreRatio =
+                context.webkitBackingStorePixelRatio ||
+                context.mozBackingStorePixelRatio ||
+                context.msBackingStorePixelRatio ||
+                context.oBackingStorePixelRatio ||
+                context.backingStorePixelRatio || 1;
+            return devicePixelRatio / backingStoreRatio;
+        },
+
+        /**
+        - isSafari, isMobileSafari, isOpera, isFirefox, isIE, isEdge, isChrome, isBlink
+
+         This is a collection of functions, used to check if the code is running in a
+         particular browser or Javascript engine.
+        */
+        isSafari: function() {
+            // *** https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+            // Safari 3.0+ "[object HTMLElementConstructor]"
+            return /constructor/i.test(window.top.HTMLElement) || (function (p) { return p.toString() === "[object SafariRemoteNotification]"; })(!window.top['safari'] || (typeof window.top.safari !== 'undefined' && window.top.safari.pushNotification));
+        },
+
+        isMobileSafari: function() {
+            //isMobileSafari adapted from https://stackoverflow.com/questions/3007480/determine-if-user-navigated-from-mobile-safari
+            return navigator.userAgent.match(/(iPod|iPhone|iPad)/) && navigator.userAgent.match(/AppleWebKit/);
+        },
+
+        isOpera: function() {
+            // *** https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+            //Opera 8.0+
+            return (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
+        },
+
+        isFirefox: function() {
+            // *** https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+            // Firefox 1.0+
+            return typeof InstallTrigger !== 'undefined';
+        },
+
+        isIE: function() {
+            // *** https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+            // Internet Explorer 6-11
+            return /*@cc_on!@*/false || !!document.documentMode;
+        },
+
+        isEdge: function() {
+            // *** https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+            // Edge 20+
+            return !browser.isIE() && !!window.StyleMedia;
+        },
+
+        isChrome: function() {
+            // *** https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+            // Chrome 1+
+            return !!window.chrome && !!window.chrome.webstore;
+        },
+
+        isBlink: function() {
+            // *** https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+            return (browser.isChrome() || browser.isOpera()) && !!window.CSS;
+        }
+    };
+
+    $.plot.browser = browser;
+})(jQuery);

frontend/lib/flot/jquery.flot.categories.js

@@ -0,0 +1,202 @@
+/* Flot plugin for plotting textual data or categories.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+Consider a dataset like [["February", 34], ["March", 20], ...]. This plugin
+allows you to plot such a dataset directly.
+
+To enable it, you must specify mode: "categories" on the axis with the textual
+labels, e.g.
+
+    $.plot("#placeholder", data, { xaxis: { mode: "categories" } });
+
+By default, the labels are ordered as they are met in the data series. If you
+need a different ordering, you can specify "categories" on the axis options
+and list the categories there:
+
+    xaxis: {
+        mode: "categories",
+        categories: ["February", "March", "April"]
+    }
+
+If you need to customize the distances between the categories, you can specify
+"categories" as an object mapping labels to values
+
+    xaxis: {
+        mode: "categories",
+        categories: { "February": 1, "March": 3, "April": 4 }
+    }
+
+If you don't specify all categories, the remaining categories will be numbered
+from the max value plus 1 (with a spacing of 1 between each).
+
+Internally, the plugin works by transforming the input data through an auto-
+generated mapping where the first category becomes 0, the second 1, etc.
+Hence, a point like ["February", 34] becomes [0, 34] internally in Flot (this
+is visible in hover and click events that return numbers rather than the
+category labels). The plugin also overrides the tick generator to spit out the
+categories as ticks instead of the values.
+
+If you need to map a value back to its label, the mapping is always accessible
+as "categories" on the axis object, e.g. plot.getAxes().xaxis.categories.
+
+*/
+
+(function ($) {
+    var options = {
+        xaxis: {
+            categories: null
+        },
+        yaxis: {
+            categories: null
+        }
+    };
+
+    function processRawData(plot, series, data, datapoints) {
+        // if categories are enabled, we need to disable
+        // auto-transformation to numbers so the strings are intact
+        // for later processing
+
+        var xCategories = series.xaxis.options.mode === "categories",
+            yCategories = series.yaxis.options.mode === "categories";
+
+        if (!(xCategories || yCategories)) {
+            return;
+        }
+
+        var format = datapoints.format;
+
+        if (!format) {
+            // FIXME: auto-detection should really not be defined here
+            var s = series;
+            format = [];
+            format.push({ x: true, number: true, required: true, computeRange: true});
+            format.push({ y: true, number: true, required: true, computeRange: true });
+
+            if (s.bars.show || (s.lines.show && s.lines.fill)) {
+                var autoScale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
+                format.push({ y: true, number: true, required: false, defaultValue: 0, computeRange: autoScale });
+                if (s.bars.horizontal) {
+                    delete format[format.length - 1].y;
+                    format[format.length - 1].x = true;
+                }
+            }
+
+            datapoints.format = format;
+        }
+
+        for (var m = 0; m < format.length; ++m) {
+            if (format[m].x && xCategories) {
+                format[m].number = false;
+            }
+
+            if (format[m].y && yCategories) {
+                format[m].number = false;
+                format[m].computeRange = false;
+            }
+        }
+    }
+
+    function getNextIndex(categories) {
+        var index = -1;
+
+        for (var v in categories) {
+            if (categories[v] > index) {
+                index = categories[v];
+            }
+        }
+
+        return index + 1;
+    }
+
+    function categoriesTickGenerator(axis) {
+        var res = [];
+        for (var label in axis.categories) {
+            var v = axis.categories[label];
+            if (v >= axis.min && v <= axis.max) {
+                res.push([v, label]);
+            }
+        }
+
+        res.sort(function (a, b) { return a[0] - b[0]; });
+
+        return res;
+    }
+
+    function setupCategoriesForAxis(series, axis, datapoints) {
+        if (series[axis].options.mode !== "categories") {
+            return;
+        }
+
+        if (!series[axis].categories) {
+            // parse options
+            var c = {}, o = series[axis].options.categories || {};
+            if ($.isArray(o)) {
+                for (var i = 0; i < o.length; ++i) {
+                    c[o[i]] = i;
+                }
+            } else {
+                for (var v in o) {
+                    c[v] = o[v];
+                }
+            }
+
+            series[axis].categories = c;
+        }
+
+        // fix ticks
+        if (!series[axis].options.ticks) {
+            series[axis].options.ticks = categoriesTickGenerator;
+        }
+
+        transformPointsOnAxis(datapoints, axis, series[axis].categories);
+    }
+
+    function transformPointsOnAxis(datapoints, axis, categories) {
+        // go through the points, transforming them
+        var points = datapoints.points,
+            ps = datapoints.pointsize,
+            format = datapoints.format,
+            formatColumn = axis.charAt(0),
+            index = getNextIndex(categories);
+
+        for (var i = 0; i < points.length; i += ps) {
+            if (points[i] == null) {
+                continue;
+            }
+
+            for (var m = 0; m < ps; ++m) {
+                var val = points[i + m];
+
+                if (val == null || !format[m][formatColumn]) {
+                    continue;
+                }
+
+                if (!(val in categories)) {
+                    categories[val] = index;
+                    ++index;
+                }
+
+                points[i + m] = categories[val];
+            }
+        }
+    }
+
+    function processDatapoints(plot, series, datapoints) {
+        setupCategoriesForAxis(series, "xaxis", datapoints);
+        setupCategoriesForAxis(series, "yaxis", datapoints);
+    }
+
+    function init(plot) {
+        plot.hooks.processRawData.push(processRawData);
+        plot.hooks.processDatapoints.push(processDatapoints);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'categories',
+        version: '1.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.composeImages.js

@@ -0,0 +1,330 @@
+/** ## jquery.flot.composeImages.js
+
+This plugin is used to expose a function used to overlap several canvases and
+SVGs, for the purpose of creating a snaphot out of them.
+
+### When composeImages is used:
+When multiple canvases and SVGs have to be overlapped into a single image
+and their offset on the page, must be preserved.
+
+### Where can be used:
+In creating a downloadable snapshot of the plots, axes, cursors etc of a graph.
+
+### How it works:
+The entry point is composeImages function. It expects an array of objects,
+which should be either canvases or SVGs (or a mix). It does a prevalidation
+of them, by verifying if they will be usable or not, later in the flow.
+After selecting only usable sources, it passes them to getGenerateTempImg
+function, which generates temporary images out of them. This function
+expects that some of the passed sources (canvas or SVG) may still have
+problems being converted to an image and makes sure the promises system,
+used by composeImages function, moves forward. As an example, SVGs with
+missing information from header or with unsupported content, may lead to
+failure in generating the temporary image. Temporary images are required
+mostly on extracting content from SVGs, but this is also where the x/y
+offsets are extracted for each image which will be added. For SVGs in
+particular, their CSS rules have to be applied.
+After all temporary images are generated, they are overlapped using
+getExecuteImgComposition function. This is where the destination canvas
+is set to the proper dimensions. It is then output by composeImages.
+This function returns a promise, which can be used to wait for the whole
+composition process. It requires to be asynchronous, because this is how
+temporary images load their data.
+*/
+
+(function($) {
+    "use strict";
+    const GENERALFAILURECALLBACKERROR = -100; //simply a negative number
+    const SUCCESSFULIMAGEPREPARATION = 0;
+    const EMPTYARRAYOFIMAGESOURCES = -1;
+    const NEGATIVEIMAGESIZE = -2;
+    var pixelRatio = 1;
+    var browser = $.plot.browser;
+    var getPixelRatio = browser.getPixelRatio;
+
+    function composeImages(canvasOrSvgSources, destinationCanvas) {
+        var validCanvasOrSvgSources = canvasOrSvgSources.filter(isValidSource);
+        pixelRatio = getPixelRatio(destinationCanvas.getContext('2d'));
+
+        var allImgCompositionPromises = validCanvasOrSvgSources.map(function(validCanvasOrSvgSource) {
+            var tempImg = new Image();
+            var currentPromise = new Promise(getGenerateTempImg(tempImg, validCanvasOrSvgSource));
+            return currentPromise;
+        });
+
+        var lastPromise = Promise.all(allImgCompositionPromises).then(getExecuteImgComposition(destinationCanvas), failureCallback);
+        return lastPromise;
+    }
+
+    function isValidSource(canvasOrSvgSource) {
+        var isValidFromCanvas = true;
+        var isValidFromContent = true;
+        if ((canvasOrSvgSource === null) || (canvasOrSvgSource === undefined)) {
+            isValidFromContent = false;
+        } else {
+            if (canvasOrSvgSource.tagName === 'CANVAS') {
+                if ((canvasOrSvgSource.getBoundingClientRect().right === canvasOrSvgSource.getBoundingClientRect().left) ||
+                    (canvasOrSvgSource.getBoundingClientRect().bottom === canvasOrSvgSource.getBoundingClientRect().top)) {
+                    isValidFromCanvas = false;
+                }
+            }
+        }
+        return isValidFromContent && isValidFromCanvas && (window.getComputedStyle(canvasOrSvgSource).visibility === 'visible');
+    }
+
+    function getGenerateTempImg(tempImg, canvasOrSvgSource) {
+        tempImg.sourceDescription = '<info className="' + canvasOrSvgSource.className + '" tagName="' + canvasOrSvgSource.tagName + '" id="' + canvasOrSvgSource.id + '">';
+        tempImg.sourceComponent = canvasOrSvgSource;
+
+        return function doGenerateTempImg(successCallbackFunc, failureCallbackFunc) {
+            tempImg.onload = function(evt) {
+                tempImg.successfullyLoaded = true;
+                successCallbackFunc(tempImg);
+            };
+
+            tempImg.onabort = function(evt) {
+                tempImg.successfullyLoaded = false;
+                console.log('Can\'t generate temp image from ' + tempImg.sourceDescription + '. It is possible that it is missing some properties or its content is not supported by this browser. Source component:', tempImg.sourceComponent);
+                successCallbackFunc(tempImg); //call successCallback, to allow snapshot of all working images
+            };
+
+            tempImg.onerror = function(evt) {
+                tempImg.successfullyLoaded = false;
+                console.log('Can\'t generate temp image from ' + tempImg.sourceDescription + '. It is possible that it is missing some properties or its content is not supported by this browser. Source component:', tempImg.sourceComponent);
+                successCallbackFunc(tempImg); //call successCallback, to allow snapshot of all working images
+            };
+
+            generateTempImageFromCanvasOrSvg(canvasOrSvgSource, tempImg);
+        };
+    }
+
+    function getExecuteImgComposition(destinationCanvas) {
+        return function executeImgComposition(tempImgs) {
+            var compositionResult = copyImgsToCanvas(tempImgs, destinationCanvas);
+            return compositionResult;
+        };
+    }
+
+    function copyCanvasToImg(canvas, img) {
+        img.src = canvas.toDataURL('image/png');
+    }
+
+    function getCSSRules(document) {
+        var styleSheets = document.styleSheets,
+            rulesList = [];
+        for (var i = 0; i < styleSheets.length; i++) {
+            // CORS requests for style sheets throw and an exception on Chrome > 64
+            try {
+                // in Chrome, the external CSS files are empty when the page is directly loaded from disk
+                var rules = styleSheets[i].cssRules || [];
+                for (var j = 0; j < rules.length; j++) {
+                    var rule = rules[j];
+                    rulesList.push(rule.cssText);
+                }
+            } catch (e) {
+                console.log('Failed to get some css rules');
+            }
+        }
+        return rulesList;
+    }
+
+    function embedCSSRulesInSVG(rules, svg) {
+        var text = [
+            '<svg class="snapshot ' + svg.classList + '" width="' + svg.width.baseVal.value * pixelRatio + '" height="' + svg.height.baseVal.value * pixelRatio + '" viewBox="0 0 ' + svg.width.baseVal.value + ' ' + svg.height.baseVal.value + '" xmlns="http://www.w3.org/2000/svg">',
+            '<style>',
+            '/* <![CDATA[ */',
+            rules.join('\n'),
+            '/* ]]> */',
+            '</style>',
+            svg.innerHTML,
+            '</svg>'
+        ].join('\n');
+        return text;
+    }
+
+    function copySVGToImgMostBrowsers(svg, img) {
+        var rules = getCSSRules(document),
+            source = embedCSSRulesInSVG(rules, svg);
+
+        source = patchSVGSource(source);
+
+        var blob = new Blob([source], {type: "image/svg+xml;charset=utf-8"}),
+            domURL = self.URL || self.webkitURL || self,
+            url = domURL.createObjectURL(blob);
+        img.src = url;
+    }
+
+    function copySVGToImgSafari(svg, img) {
+        // Use this method to convert a string buffer array to a binary string.
+        // Do so by breaking up large strings into smaller substrings; this is necessary to avoid the
+        // "maximum call stack size exceeded" exception that can happen when calling 'String.fromCharCode.apply'
+        // with a very long array.
+        function buildBinaryString (arrayBuffer) {
+            var binaryString = "";
+            const utf8Array = new Uint8Array(arrayBuffer);
+            const blockSize = 16384;
+            for (var i = 0; i < utf8Array.length; i = i + blockSize) {
+                const binarySubString = String.fromCharCode.apply(null, utf8Array.subarray(i, i + blockSize));
+                binaryString = binaryString + binarySubString;
+            }
+            return binaryString;
+        };
+
+        var rules = getCSSRules(document),
+            source = embedCSSRulesInSVG(rules, svg),
+            data,
+            utf8BinaryString;
+
+        source = patchSVGSource(source);
+
+        // Encode the string as UTF-8 and convert it to a binary string. The UTF-8 encoding is required to
+        // capture unicode characters correctly.
+        utf8BinaryString = buildBinaryString(new (TextEncoder || TextEncoderLite)('utf-8').encode(source));
+
+        data = "data:image/svg+xml;base64," + btoa(utf8BinaryString);
+        img.src = data;
+    }
+
+    function patchSVGSource(svgSource) {
+        var source = '';
+        //add name spaces.
+        if (!svgSource.match(/^<svg[^>]+xmlns="http:\/\/www\.w3\.org\/2000\/svg"/)) {
+            source = svgSource.replace(/^<svg/, '<svg xmlns="http://www.w3.org/2000/svg"');
+        }
+        if (!svgSource.match(/^<svg[^>]+"http:\/\/www\.w3\.org\/1999\/xlink"/)) {
+            source = svgSource.replace(/^<svg/, '<svg xmlns:xlink="http://www.w3.org/1999/xlink"');
+        }
+
+        //add xml declaration
+        return '<?xml version="1.0" standalone="no"?>\r\n' + source;
+    }
+
+    function copySVGToImg(svg, img) {
+        if (browser.isSafari() || browser.isMobileSafari()) {
+            copySVGToImgSafari(svg, img);
+        } else {
+            copySVGToImgMostBrowsers(svg, img);
+        }
+    }
+
+    function adaptDestSizeToZoom(destinationCanvas, sources) {
+        function containsSVGs(source) {
+            return source.srcImgTagName === 'svg';
+        }
+
+        if (sources.find(containsSVGs) !== undefined) {
+            if (pixelRatio < 1) {
+                destinationCanvas.width = destinationCanvas.width * pixelRatio;
+                destinationCanvas.height = destinationCanvas.height * pixelRatio;
+            }
+        }
+    }
+
+    function prepareImagesToBeComposed(sources, destination) {
+        var result = SUCCESSFULIMAGEPREPARATION;
+        if (sources.length === 0) {
+            result = EMPTYARRAYOFIMAGESOURCES; //nothing to do if called without sources
+        } else {
+            var minX = sources[0].genLeft;
+            var minY = sources[0].genTop;
+            var maxX = sources[0].genRight;
+            var maxY = sources[0].genBottom;
+            var i = 0;
+
+            for (i = 1; i < sources.length; i++) {
+                if (minX > sources[i].genLeft) {
+                    minX = sources[i].genLeft;
+                }
+
+                if (minY > sources[i].genTop) {
+                    minY = sources[i].genTop;
+                }
+            }
+
+            for (i = 1; i < sources.length; i++) {
+                if (maxX < sources[i].genRight) {
+                    maxX = sources[i].genRight;
+                }
+
+                if (maxY < sources[i].genBottom) {
+                    maxY = sources[i].genBottom;
+                }
+            }
+
+            if ((maxX - minX <= 0) || (maxY - minY <= 0)) {
+                result = NEGATIVEIMAGESIZE; //this might occur on hidden images
+            } else {
+                destination.width = Math.round(maxX - minX);
+                destination.height = Math.round(maxY - minY);
+
+                for (i = 0; i < sources.length; i++) {
+                    sources[i].xCompOffset = sources[i].genLeft - minX;
+                    sources[i].yCompOffset = sources[i].genTop - minY;
+                }
+
+                adaptDestSizeToZoom(destination, sources);
+            }
+        }
+        return result;
+    }
+
+    function copyImgsToCanvas(sources, destination) {
+        var prepareImagesResult = prepareImagesToBeComposed(sources, destination);
+        if (prepareImagesResult === SUCCESSFULIMAGEPREPARATION) {
+            var destinationCtx = destination.getContext('2d');
+
+            for (var i = 0; i < sources.length; i++) {
+                if (sources[i].successfullyLoaded === true) {
+                    destinationCtx.drawImage(sources[i], sources[i].xCompOffset * pixelRatio, sources[i].yCompOffset * pixelRatio);
+                }
+            }
+        }
+        return prepareImagesResult;
+    }
+
+    function adnotateDestImgWithBoundingClientRect(srcCanvasOrSvg, destImg) {
+        destImg.genLeft = srcCanvasOrSvg.getBoundingClientRect().left;
+        destImg.genTop = srcCanvasOrSvg.getBoundingClientRect().top;
+
+        if (srcCanvasOrSvg.tagName === 'CANVAS') {
+            destImg.genRight = destImg.genLeft + srcCanvasOrSvg.width;
+            destImg.genBottom = destImg.genTop + srcCanvasOrSvg.height;
+        }
+
+        if (srcCanvasOrSvg.tagName === 'svg') {
+            destImg.genRight = srcCanvasOrSvg.getBoundingClientRect().right;
+            destImg.genBottom = srcCanvasOrSvg.getBoundingClientRect().bottom;
+        }
+    }
+
+    function generateTempImageFromCanvasOrSvg(srcCanvasOrSvg, destImg) {
+        if (srcCanvasOrSvg.tagName === 'CANVAS') {
+            copyCanvasToImg(srcCanvasOrSvg, destImg);
+        }
+
+        if (srcCanvasOrSvg.tagName === 'svg') {
+            copySVGToImg(srcCanvasOrSvg, destImg);
+        }
+
+        destImg.srcImgTagName = srcCanvasOrSvg.tagName;
+        adnotateDestImgWithBoundingClientRect(srcCanvasOrSvg, destImg);
+    }
+
+    function failureCallback() {
+        return GENERALFAILURECALLBACKERROR;
+    }
+
+    // used for testing
+    $.plot.composeImages = composeImages;
+
+    function init(plot) {
+        // used to extend the public API of the plot
+        plot.composeImages = composeImages;
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        name: 'composeImages',
+        version: '1.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.crosshair.js

@@ -0,0 +1,202 @@
+/* Flot plugin for showing crosshairs when the mouse hovers over the plot.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The plugin supports these options:
+
+    crosshair: {
+        mode: null or "x" or "y" or "xy"
+        color: color
+        lineWidth: number
+    }
+
+Set the mode to one of "x", "y" or "xy". The "x" mode enables a vertical
+crosshair that lets you trace the values on the x axis, "y" enables a
+horizontal crosshair and "xy" enables them both. "color" is the color of the
+crosshair (default is "rgba(170, 0, 0, 0.80)"), "lineWidth" is the width of
+the drawn lines (default is 1).
+
+The plugin also adds four public methods:
+
+  - setCrosshair( pos )
+
+    Set the position of the crosshair. Note that this is cleared if the user
+    moves the mouse. "pos" is in coordinates of the plot and should be on the
+    form { x: xpos, y: ypos } (you can use x2/x3/... if you're using multiple
+    axes), which is coincidentally the same format as what you get from a
+    "plothover" event. If "pos" is null, the crosshair is cleared.
+
+  - clearCrosshair()
+
+    Clear the crosshair.
+
+  - lockCrosshair(pos)
+
+    Cause the crosshair to lock to the current location, no longer updating if
+    the user moves the mouse. Optionally supply a position (passed on to
+    setCrosshair()) to move it to.
+
+    Example usage:
+
+    var myFlot = $.plot( $("#graph"), ..., { crosshair: { mode: "x" } } };
+    $("#graph").bind( "plothover", function ( evt, position, item ) {
+        if ( item ) {
+            // Lock the crosshair to the data point being hovered
+            myFlot.lockCrosshair({
+                x: item.datapoint[ 0 ],
+                y: item.datapoint[ 1 ]
+            });
+        } else {
+            // Return normal crosshair operation
+            myFlot.unlockCrosshair();
+        }
+    });
+
+  - unlockCrosshair()
+
+    Free the crosshair to move again after locking it.
+*/
+
+(function ($) {
+    var options = {
+        crosshair: {
+            mode: null, // one of null, "x", "y" or "xy",
+            color: "rgba(170, 0, 0, 0.80)",
+            lineWidth: 1
+        }
+    };
+
+    function init(plot) {
+        // position of crosshair in pixels
+        var crosshair = {x: -1, y: -1, locked: false, highlighted: false};
+
+        plot.setCrosshair = function setCrosshair(pos) {
+            if (!pos) {
+                crosshair.x = -1;
+            } else {
+                var o = plot.p2c(pos);
+                crosshair.x = Math.max(0, Math.min(o.left, plot.width()));
+                crosshair.y = Math.max(0, Math.min(o.top, plot.height()));
+            }
+
+            plot.triggerRedrawOverlay();
+        };
+
+        plot.clearCrosshair = plot.setCrosshair; // passes null for pos
+
+        plot.lockCrosshair = function lockCrosshair(pos) {
+            if (pos) {
+                plot.setCrosshair(pos);
+            }
+
+            crosshair.locked = true;
+        };
+
+        plot.unlockCrosshair = function unlockCrosshair() {
+            crosshair.locked = false;
+            crosshair.rect = null;
+        };
+
+        function onMouseOut(e) {
+            if (crosshair.locked) {
+                return;
+            }
+
+            if (crosshair.x !== -1) {
+                crosshair.x = -1;
+                plot.triggerRedrawOverlay();
+            }
+        }
+
+        function onMouseMove(e) {
+            var offset = plot.offset();
+            if (crosshair.locked) {
+                var mouseX = Math.max(0, Math.min(e.pageX - offset.left, plot.width()));
+                var mouseY = Math.max(0, Math.min(e.pageY - offset.top, plot.height()));
+
+                if ((mouseX > crosshair.x - 4) && (mouseX < crosshair.x + 4) && (mouseY > crosshair.y - 4) && (mouseY < crosshair.y + 4)) {
+                    if (!crosshair.highlighted) {
+                        crosshair.highlighted = true;
+                        plot.triggerRedrawOverlay();
+                    }
+                } else {
+                    if (crosshair.highlighted) {
+                        crosshair.highlighted = false;
+                        plot.triggerRedrawOverlay();
+                    }
+                }
+                return;
+            }
+
+            if (plot.getSelection && plot.getSelection()) {
+                crosshair.x = -1; // hide the crosshair while selecting
+                return;
+            }
+
+            crosshair.x = Math.max(0, Math.min(e.pageX - offset.left, plot.width()));
+            crosshair.y = Math.max(0, Math.min(e.pageY - offset.top, plot.height()));
+            plot.triggerRedrawOverlay();
+        }
+
+        plot.hooks.bindEvents.push(function (plot, eventHolder) {
+            if (!plot.getOptions().crosshair.mode) {
+                return;
+            }
+
+            eventHolder.mouseout(onMouseOut);
+            eventHolder.mousemove(onMouseMove);
+        });
+
+        plot.hooks.drawOverlay.push(function (plot, ctx) {
+            var c = plot.getOptions().crosshair;
+            if (!c.mode) {
+                return;
+            }
+
+            var plotOffset = plot.getPlotOffset();
+
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+
+            if (crosshair.x !== -1) {
+                var adj = plot.getOptions().crosshair.lineWidth % 2 ? 0.5 : 0;
+
+                ctx.strokeStyle = c.color;
+                ctx.lineWidth = c.lineWidth;
+                ctx.lineJoin = "round";
+
+                ctx.beginPath();
+                if (c.mode.indexOf("x") !== -1) {
+                    var drawX = Math.floor(crosshair.x) + adj;
+                    ctx.moveTo(drawX, 0);
+                    ctx.lineTo(drawX, plot.height());
+                }
+                if (c.mode.indexOf("y") !== -1) {
+                    var drawY = Math.floor(crosshair.y) + adj;
+                    ctx.moveTo(0, drawY);
+                    ctx.lineTo(plot.width(), drawY);
+                }
+                if (crosshair.locked) {
+                    if (crosshair.highlighted) ctx.fillStyle = 'orange';
+                    else ctx.fillStyle = c.color;
+                    ctx.fillRect(Math.floor(crosshair.x) + adj - 4, Math.floor(crosshair.y) + adj - 4, 8, 8);
+                }
+                ctx.stroke();
+            }
+            ctx.restore();
+        });
+
+        plot.hooks.shutdown.push(function (plot, eventHolder) {
+            eventHolder.unbind("mouseout", onMouseOut);
+            eventHolder.unbind("mousemove", onMouseMove);
+        });
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'crosshair',
+        version: '1.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.drawSeries.js

@@ -0,0 +1,663 @@
+/**
+## jquery.flot.drawSeries.js
+
+This plugin is used by flot for drawing lines, plots, bars or area.
+
+### Public methods
+*/
+
+(function($) {
+    "use strict";
+
+    function DrawSeries() {
+        function plotLine(datapoints, xoffset, yoffset, axisx, axisy, ctx, steps) {
+            var points = datapoints.points,
+                ps = datapoints.pointsize,
+                prevx = null,
+                prevy = null;
+            var x1 = 0.0,
+                y1 = 0.0,
+                x2 = 0.0,
+                y2 = 0.0,
+                mx = null,
+                my = null,
+                i = 0;
+
+            ctx.beginPath();
+            for (i = ps; i < points.length; i += ps) {
+                x1 = points[i - ps];
+                y1 = points[i - ps + 1];
+                x2 = points[i];
+                y2 = points[i + 1];
+
+                if (x1 === null || x2 === null) {
+                    mx = null;
+                    my = null;
+                    continue;
+                }
+
+                if (isNaN(x1) || isNaN(x2) || isNaN(y1) || isNaN(y2)) {
+                    prevx = null;
+                    prevy = null;
+                    continue;
+                }
+
+                if(steps){
+                    if (mx !== null && my !== null) {
+                        // if middle point exists, transfer p2 -> p1 and p1 -> mp
+                        x2 = x1;
+                        y2 = y1;
+                        x1 = mx;
+                        y1 = my;
+
+                        // 'remove' middle point
+                        mx = null;
+                        my = null;
+
+                        // subtract pointsize from i to have current point p1 handled again
+                        i -= ps;
+                    } else if (y1 !== y2 && x1 !== x2) {
+                        // create a middle point
+                        y2 = y1;
+                        mx = x2;
+                        my = y1;
+                    }
+                }
+
+                // clip with ymin
+                if (y1 <= y2 && y1 < axisy.min) {
+                    if (y2 < axisy.min) {
+                        // line segment is outside
+                        continue;
+                    }
+                    // compute new intersection point
+                    x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y1 = axisy.min;
+                } else if (y2 <= y1 && y2 < axisy.min) {
+                    if (y1 < axisy.min) {
+                        continue;
+                    }
+
+                    x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y2 = axisy.min;
+                }
+
+                // clip with ymax
+                if (y1 >= y2 && y1 > axisy.max) {
+                    if (y2 > axisy.max) {
+                        continue;
+                    }
+
+                    x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y1 = axisy.max;
+                } else if (y2 >= y1 && y2 > axisy.max) {
+                    if (y1 > axisy.max) {
+                        continue;
+                    }
+
+                    x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y2 = axisy.max;
+                }
+
+                // clip with xmin
+                if (x1 <= x2 && x1 < axisx.min) {
+                    if (x2 < axisx.min) {
+                        continue;
+                    }
+
+                    y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x1 = axisx.min;
+                } else if (x2 <= x1 && x2 < axisx.min) {
+                    if (x1 < axisx.min) {
+                        continue;
+                    }
+
+                    y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x2 = axisx.min;
+                }
+
+                // clip with xmax
+                if (x1 >= x2 && x1 > axisx.max) {
+                    if (x2 > axisx.max) {
+                        continue;
+                    }
+
+                    y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x1 = axisx.max;
+                } else if (x2 >= x1 && x2 > axisx.max) {
+                    if (x1 > axisx.max) {
+                        continue;
+                    }
+
+                    y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x2 = axisx.max;
+                }
+
+                if (x1 !== prevx || y1 !== prevy) {
+                    ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
+                }
+
+                prevx = x2;
+                prevy = y2;
+                ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
+            }
+            ctx.stroke();
+        }
+
+        function plotLineArea(datapoints, axisx, axisy, fillTowards, ctx, steps) {
+            var points = datapoints.points,
+                ps = datapoints.pointsize,
+                bottom = fillTowards > axisy.min ? Math.min(axisy.max, fillTowards) : axisy.min,
+                i = 0,
+                ypos = 1,
+                areaOpen = false,
+                segmentStart = 0,
+                segmentEnd = 0,
+                mx = null,
+                my = null;
+
+            // we process each segment in two turns, first forward
+            // direction to sketch out top, then once we hit the
+            // end we go backwards to sketch the bottom
+            while (true) {
+                if (ps > 0 && i > points.length + ps) {
+                    break;
+                }
+
+                i += ps; // ps is negative if going backwards
+
+                var x1 = points[i - ps],
+                    y1 = points[i - ps + ypos],
+                    x2 = points[i],
+                    y2 = points[i + ypos];
+
+                if (ps === -2) {
+                    /* going backwards and no value for the bottom provided in the series*/
+                    y1 = y2 = bottom;
+                }
+
+                if (areaOpen) {
+                    if (ps > 0 && x1 != null && x2 == null) {
+                        // at turning point
+                        segmentEnd = i;
+                        ps = -ps;
+                        ypos = 2;
+                        continue;
+                    }
+
+                    if (ps < 0 && i === segmentStart + ps) {
+                        // done with the reverse sweep
+                        ctx.fill();
+                        areaOpen = false;
+                        ps = -ps;
+                        ypos = 1;
+                        i = segmentStart = segmentEnd + ps;
+                        continue;
+                    }
+                }
+
+                if (x1 == null || x2 == null) {
+                    mx = null;
+                    my = null;
+                    continue;
+                }
+
+                if(steps){
+                    if (mx !== null && my !== null) {
+                        // if middle point exists, transfer p2 -> p1 and p1 -> mp
+                        x2 = x1;
+                        y2 = y1;
+                        x1 = mx;
+                        y1 = my;
+
+                        // 'remove' middle point
+                        mx = null;
+                        my = null;
+
+                        // subtract pointsize from i to have current point p1 handled again
+                        i -= ps;
+                    } else if (y1 !== y2 && x1 !== x2) {
+                        // create a middle point
+                        y2 = y1;
+                        mx = x2;
+                        my = y1;
+                    }
+                }
+
+                // clip x values
+
+                // clip with xmin
+                if (x1 <= x2 && x1 < axisx.min) {
+                    if (x2 < axisx.min) {
+                        continue;
+                    }
+
+                    y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x1 = axisx.min;
+                } else if (x2 <= x1 && x2 < axisx.min) {
+                    if (x1 < axisx.min) {
+                        continue;
+                    }
+
+                    y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x2 = axisx.min;
+                }
+
+                // clip with xmax
+                if (x1 >= x2 && x1 > axisx.max) {
+                    if (x2 > axisx.max) {
+                        continue;
+                    }
+
+                    y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x1 = axisx.max;
+                } else if (x2 >= x1 && x2 > axisx.max) {
+                    if (x1 > axisx.max) {
+                        continue;
+                    }
+
+                    y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                    x2 = axisx.max;
+                }
+
+                if (!areaOpen) {
+                    // open area
+                    ctx.beginPath();
+                    ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
+                    areaOpen = true;
+                }
+
+                // now first check the case where both is outside
+                if (y1 >= axisy.max && y2 >= axisy.max) {
+                    ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
+                    ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
+                    continue;
+                } else if (y1 <= axisy.min && y2 <= axisy.min) {
+                    ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
+                    ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
+                    continue;
+                }
+
+                // else it's a bit more complicated, there might
+                // be a flat maxed out rectangle first, then a
+                // triangular cutout or reverse; to find these
+                // keep track of the current x values
+                var x1old = x1,
+                    x2old = x2;
+
+                // clip the y values, without shortcutting, we
+                // go through all cases in turn
+
+                // clip with ymin
+                if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
+                    x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y1 = axisy.min;
+                } else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
+                    x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y2 = axisy.min;
+                }
+
+                // clip with ymax
+                if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
+                    x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y1 = axisy.max;
+                } else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
+                    x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                    y2 = axisy.max;
+                }
+
+                // if the x value was changed we got a rectangle
+                // to fill
+                if (x1 !== x1old) {
+                    ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
+                    // it goes to (x1, y1), but we fill that below
+                }
+
+                // fill triangular section, this sometimes result
+                // in redundant points if (x1, y1) hasn't changed
+                // from previous line to, but we just ignore that
+                ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
+                ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
+
+                // fill the other rectangle if it's there
+                if (x2 !== x2old) {
+                    ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
+                    ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2));
+                }
+            }
+        }
+
+        /**
+        - drawSeriesLines(series, ctx, plotOffset, plotWidth, plotHeight, drawSymbol, getColorOrGradient)
+
+         This function is used for drawing lines or area fill.  In case the series has line decimation function
+         attached, before starting to draw, as an optimization the points will first be decimated.
+
+         The series parameter contains the series to be drawn on ctx context. The plotOffset, plotWidth and
+         plotHeight are the corresponding parameters of flot used to determine the drawing surface.
+         The function getColorOrGradient is used to compute the fill style of lines and area.
+        */
+        function drawSeriesLines(series, ctx, plotOffset, plotWidth, plotHeight, drawSymbol, getColorOrGradient) {
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+            ctx.lineJoin = "round";
+
+            if (series.lines.dashes && ctx.setLineDash) {
+                ctx.setLineDash(series.lines.dashes);
+            }
+
+            var datapoints = {
+                format: series.datapoints.format,
+                points: series.datapoints.points,
+                pointsize: series.datapoints.pointsize
+            };
+
+            if (series.decimate) {
+                datapoints.points = series.decimate(series, series.xaxis.min, series.xaxis.max, plotWidth, series.yaxis.min, series.yaxis.max, plotHeight);
+            }
+
+            var lw = series.lines.lineWidth;
+
+            ctx.lineWidth = lw;
+            ctx.strokeStyle = series.color;
+            var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight, getColorOrGradient);
+            if (fillStyle) {
+                ctx.fillStyle = fillStyle;
+                plotLineArea(datapoints, series.xaxis, series.yaxis, series.lines.fillTowards || 0, ctx, series.lines.steps);
+            }
+
+            if (lw > 0) {
+                plotLine(datapoints, 0, 0, series.xaxis, series.yaxis, ctx, series.lines.steps);
+            }
+
+            ctx.restore();
+        }
+
+        /**
+        - drawSeriesPoints(series, ctx, plotOffset, plotWidth, plotHeight, drawSymbol, getColorOrGradient)
+
+         This function is used for drawing points using a given symbol. In case the series has points decimation
+         function attached, before starting to draw, as an optimization the points will first be decimated.
+
+         The series parameter contains the series to be drawn on ctx context. The plotOffset, plotWidth and
+         plotHeight are the corresponding parameters of flot used to determine the drawing surface.
+         The function drawSymbol is used to compute and draw the symbol chosen for the points.
+        */
+        function drawSeriesPoints(series, ctx, plotOffset, plotWidth, plotHeight, drawSymbol, getColorOrGradient) {
+            function drawCircle(ctx, x, y, radius, shadow, fill) {
+                ctx.moveTo(x + radius, y);
+                ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false);
+            }
+            drawCircle.fill = true;
+            function plotPoints(datapoints, radius, fill, offset, shadow, axisx, axisy, drawSymbolFn) {
+                var points = datapoints.points,
+                    ps = datapoints.pointsize;
+
+                ctx.beginPath();
+                for (var i = 0; i < points.length; i += ps) {
+                    var x = points[i],
+                        y = points[i + 1];
+                    if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) {
+                        continue;
+                    }
+
+                    x = axisx.p2c(x);
+                    y = axisy.p2c(y) + offset;
+
+                    drawSymbolFn(ctx, x, y, radius, shadow, fill);
+                }
+                if (drawSymbolFn.fill && !shadow) {
+                    ctx.fill();
+                }
+                ctx.stroke();
+            }
+
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+
+            var datapoints = {
+                format: series.datapoints.format,
+                points: series.datapoints.points,
+                pointsize: series.datapoints.pointsize
+            };
+
+            if (series.decimatePoints) {
+                datapoints.points = series.decimatePoints(series, series.xaxis.min, series.xaxis.max, plotWidth, series.yaxis.min, series.yaxis.max, plotHeight);
+            }
+
+            var lw = series.points.lineWidth,
+                radius = series.points.radius,
+                symbol = series.points.symbol,
+                drawSymbolFn;
+
+            if (symbol === 'circle') {
+                drawSymbolFn = drawCircle;
+            } else if (typeof symbol === 'string' && drawSymbol && drawSymbol[symbol]) {
+                drawSymbolFn = drawSymbol[symbol];
+            } else if (typeof drawSymbol === 'function') {
+                drawSymbolFn = drawSymbol;
+            }
+
+            // If the user sets the line width to 0, we change it to a very
+            // small value. A line width of 0 seems to force the default of 1.
+
+            if (lw === 0) {
+                lw = 0.0001;
+            }
+
+            ctx.lineWidth = lw;
+            ctx.fillStyle = getFillStyle(series.points, series.color, null, null, getColorOrGradient);
+            ctx.strokeStyle = series.color;
+            plotPoints(datapoints, radius,
+                true, 0, false,
+                series.xaxis, series.yaxis, drawSymbolFn);
+            ctx.restore();
+        }
+
+        function drawBar(x, y, b, barLeft, barRight, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
+            var left = x + barLeft,
+                right = x + barRight,
+                bottom = b, top = y,
+                drawLeft, drawRight, drawTop, drawBottom = false,
+                tmp;
+
+            drawLeft = drawRight = drawTop = true;
+
+            // in horizontal mode, we start the bar from the left
+            // instead of from the bottom so it appears to be
+            // horizontal rather than vertical
+            if (horizontal) {
+                drawBottom = drawRight = drawTop = true;
+                drawLeft = false;
+                left = b;
+                right = x;
+                top = y + barLeft;
+                bottom = y + barRight;
+
+                // account for negative bars
+                if (right < left) {
+                    tmp = right;
+                    right = left;
+                    left = tmp;
+                    drawLeft = true;
+                    drawRight = false;
+                }
+            }
+            else {
+                drawLeft = drawRight = drawTop = true;
+                drawBottom = false;
+                left = x + barLeft;
+                right = x + barRight;
+                bottom = b;
+                top = y;
+
+                // account for negative bars
+                if (top < bottom) {
+                    tmp = top;
+                    top = bottom;
+                    bottom = tmp;
+                    drawBottom = true;
+                    drawTop = false;
+                }
+            }
+
+            // clip
+            if (right < axisx.min || left > axisx.max ||
+                top < axisy.min || bottom > axisy.max) {
+                return;
+            }
+
+            if (left < axisx.min) {
+                left = axisx.min;
+                drawLeft = false;
+            }
+
+            if (right > axisx.max) {
+                right = axisx.max;
+                drawRight = false;
+            }
+
+            if (bottom < axisy.min) {
+                bottom = axisy.min;
+                drawBottom = false;
+            }
+
+            if (top > axisy.max) {
+                top = axisy.max;
+                drawTop = false;
+            }
+
+            left = axisx.p2c(left);
+            bottom = axisy.p2c(bottom);
+            right = axisx.p2c(right);
+            top = axisy.p2c(top);
+
+            // fill the bar
+            if (fillStyleCallback) {
+                c.fillStyle = fillStyleCallback(bottom, top);
+                c.fillRect(left, top, right - left, bottom - top)
+            }
+
+            // draw outline
+            if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
+                c.beginPath();
+
+                // FIXME: inline moveTo is buggy with excanvas
+                c.moveTo(left, bottom);
+                if (drawLeft) {
+                    c.lineTo(left, top);
+                } else {
+                    c.moveTo(left, top);
+                }
+
+                if (drawTop) {
+                    c.lineTo(right, top);
+                } else {
+                    c.moveTo(right, top);
+                }
+
+                if (drawRight) {
+                    c.lineTo(right, bottom);
+                } else {
+                    c.moveTo(right, bottom);
+                }
+
+                if (drawBottom) {
+                    c.lineTo(left, bottom);
+                } else {
+                    c.moveTo(left, bottom);
+                }
+
+                c.stroke();
+            }
+        }
+
+        /**
+        - drawSeriesBars(series, ctx, plotOffset, plotWidth, plotHeight, drawSymbol, getColorOrGradient)
+
+         This function is used for drawing series represented as bars. In case the series has decimation
+         function attached, before starting to draw, as an optimization the points will first be decimated.
+
+         The series parameter contains the series to be drawn on ctx context. The plotOffset, plotWidth and
+         plotHeight are the corresponding parameters of flot used to determine the drawing surface.
+         The function getColorOrGradient is used to compute the fill style of bars.
+        */
+        function drawSeriesBars(series, ctx, plotOffset, plotWidth, plotHeight, drawSymbol, getColorOrGradient) {
+            function plotBars(datapoints, barLeft, barRight, fillStyleCallback, axisx, axisy) {
+                var points = datapoints.points,
+                    ps = datapoints.pointsize,
+                    fillTowards = series.bars.fillTowards || 0,
+                    defaultBottom = fillTowards > axisy.min ? Math.min(axisy.max, fillTowards) : axisy.min;
+
+                for (var i = 0; i < points.length; i += ps) {
+                    if (points[i] == null) {
+                        continue;
+                    }
+
+                    // Use third point as bottom if pointsize is 3
+                    var bottom = ps === 3 ? points[i + 2] : defaultBottom;
+                    drawBar(points[i], points[i + 1], bottom, barLeft, barRight, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
+                }
+            }
+
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+
+            var datapoints = {
+                format: series.datapoints.format,
+                points: series.datapoints.points,
+                pointsize: series.datapoints.pointsize
+            };
+
+            if (series.decimate) {
+                datapoints.points = series.decimate(series, series.xaxis.min, series.xaxis.max, plotWidth);
+            }
+
+            ctx.lineWidth = series.bars.lineWidth;
+            ctx.strokeStyle = series.color;
+
+            var barLeft;
+            var barWidth = series.bars.barWidth[0] || series.bars.barWidth;
+            switch (series.bars.align) {
+                case "left":
+                    barLeft = 0;
+                    break;
+                case "right":
+                    barLeft = -barWidth;
+                    break;
+                default:
+                    barLeft = -barWidth / 2;
+            }
+
+            var fillStyleCallback = series.bars.fill ? function(bottom, top) {
+                return getFillStyle(series.bars, series.color, bottom, top, getColorOrGradient);
+            } : null;
+
+            plotBars(datapoints, barLeft, barLeft + barWidth, fillStyleCallback, series.xaxis, series.yaxis);
+            ctx.restore();
+        }
+
+        function getFillStyle(filloptions, seriesColor, bottom, top, getColorOrGradient) {
+            var fill = filloptions.fill;
+            if (!fill) {
+                return null;
+            }
+
+            if (filloptions.fillColor) {
+                return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
+            }
+
+            var c = $.color.parse(seriesColor);
+            c.a = typeof fill === "number" ? fill : 0.4;
+            c.normalize();
+            return c.toString();
+        }
+
+        this.drawSeriesLines = drawSeriesLines;
+        this.drawSeriesPoints = drawSeriesPoints;
+        this.drawSeriesBars = drawSeriesBars;
+        this.drawBar = drawBar;
+    };
+
+    $.plot.drawSeries = new DrawSeries();
+})(jQuery);

frontend/lib/flot/jquery.flot.errorbars.js

@@ -0,0 +1,375 @@
+/* Flot plugin for plotting error bars.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+Error bars are used to show standard deviation and other statistical
+properties in a plot.
+
+* Created by Rui Pereira  -  rui (dot) pereira (at) gmail (dot) com
+
+This plugin allows you to plot error-bars over points. Set "errorbars" inside
+the points series to the axis name over which there will be error values in
+your data array (*even* if you do not intend to plot them later, by setting
+"show: null" on xerr/yerr).
+
+The plugin supports these options:
+
+    series: {
+        points: {
+            errorbars: "x" or "y" or "xy",
+            xerr: {
+                show: null/false or true,
+                asymmetric: null/false or true,
+                upperCap: null or "-" or function,
+                lowerCap: null or "-" or function,
+                color: null or color,
+                radius: null or number
+            },
+            yerr: { same options as xerr }
+        }
+    }
+
+Each data point array is expected to be of the type:
+
+    "x"  [ x, y, xerr ]
+    "y"  [ x, y, yerr ]
+    "xy" [ x, y, xerr, yerr ]
+
+Where xerr becomes xerr_lower,xerr_upper for the asymmetric error case, and
+equivalently for yerr. Eg., a datapoint for the "xy" case with symmetric
+error-bars on X and asymmetric on Y would be:
+
+    [ x, y, xerr, yerr_lower, yerr_upper ]
+
+By default no end caps are drawn. Setting upperCap and/or lowerCap to "-" will
+draw a small cap perpendicular to the error bar. They can also be set to a
+user-defined drawing function, with (ctx, x, y, radius) as parameters, as eg.
+
+    function drawSemiCircle( ctx, x, y, radius ) {
+        ctx.beginPath();
+        ctx.arc( x, y, radius, 0, Math.PI, false );
+        ctx.moveTo( x - radius, y );
+        ctx.lineTo( x + radius, y );
+        ctx.stroke();
+    }
+
+Color and radius both default to the same ones of the points series if not
+set. The independent radius parameter on xerr/yerr is useful for the case when
+we may want to add error-bars to a line, without showing the interconnecting
+points (with radius: 0), and still showing end caps on the error-bars.
+shadowSize and lineWidth are derived as well from the points series.
+
+*/
+
+(function ($) {
+    var options = {
+        series: {
+            points: {
+                errorbars: null, //should be 'x', 'y' or 'xy'
+                xerr: {err: 'x', show: null, asymmetric: null, upperCap: null, lowerCap: null, color: null, radius: null},
+                yerr: {err: 'y', show: null, asymmetric: null, upperCap: null, lowerCap: null, color: null, radius: null}
+            }
+        }
+    };
+
+    function processRawData(plot, series, data, datapoints) {
+        if (!series.points.errorbars) {
+            return;
+        }
+
+        // x,y values
+        var format = [
+            { x: true, number: true, required: true },
+            { y: true, number: true, required: true }
+        ];
+
+        var errors = series.points.errorbars;
+        // error bars - first X then Y
+        if (errors === 'x' || errors === 'xy') {
+            // lower / upper error
+            if (series.points.xerr.asymmetric) {
+                format.push({ x: true, number: true, required: true });
+                format.push({ x: true, number: true, required: true });
+            } else {
+                format.push({ x: true, number: true, required: true });
+            }
+        }
+        if (errors === 'y' || errors === 'xy') {
+            // lower / upper error
+            if (series.points.yerr.asymmetric) {
+                format.push({ y: true, number: true, required: true });
+                format.push({ y: true, number: true, required: true });
+            } else {
+                format.push({ y: true, number: true, required: true });
+            }
+        }
+        datapoints.format = format;
+    }
+
+    function parseErrors(series, i) {
+        var points = series.datapoints.points;
+
+        // read errors from points array
+        var exl = null,
+            exu = null,
+            eyl = null,
+            eyu = null;
+        var xerr = series.points.xerr,
+            yerr = series.points.yerr;
+
+        var eb = series.points.errorbars;
+        // error bars - first X
+        if (eb === 'x' || eb === 'xy') {
+            if (xerr.asymmetric) {
+                exl = points[i + 2];
+                exu = points[i + 3];
+                if (eb === 'xy') {
+                    if (yerr.asymmetric) {
+                        eyl = points[i + 4];
+                        eyu = points[i + 5];
+                    } else {
+                        eyl = points[i + 4];
+                    }
+                }
+            } else {
+                exl = points[i + 2];
+                if (eb === 'xy') {
+                    if (yerr.asymmetric) {
+                        eyl = points[i + 3];
+                        eyu = points[i + 4];
+                    } else {
+                        eyl = points[i + 3];
+                    }
+                }
+            }
+        // only Y
+        } else {
+            if (eb === 'y') {
+                if (yerr.asymmetric) {
+                    eyl = points[i + 2];
+                    eyu = points[i + 3];
+                } else {
+                    eyl = points[i + 2];
+                }
+            }
+        }
+
+        // symmetric errors?
+        if (exu == null) exu = exl;
+        if (eyu == null) eyu = eyl;
+
+        var errRanges = [exl, exu, eyl, eyu];
+        // nullify if not showing
+        if (!xerr.show) {
+            errRanges[0] = null;
+            errRanges[1] = null;
+        }
+        if (!yerr.show) {
+            errRanges[2] = null;
+            errRanges[3] = null;
+        }
+        return errRanges;
+    }
+
+    function drawSeriesErrors(plot, ctx, s) {
+        var points = s.datapoints.points,
+            ps = s.datapoints.pointsize,
+            ax = [s.xaxis, s.yaxis],
+            radius = s.points.radius,
+            err = [s.points.xerr, s.points.yerr],
+            tmp;
+
+        //sanity check, in case some inverted axis hack is applied to flot
+        var invertX = false;
+        if (ax[0].p2c(ax[0].max) < ax[0].p2c(ax[0].min)) {
+            invertX = true;
+            tmp = err[0].lowerCap;
+            err[0].lowerCap = err[0].upperCap;
+            err[0].upperCap = tmp;
+        }
+
+        var invertY = false;
+        if (ax[1].p2c(ax[1].min) < ax[1].p2c(ax[1].max)) {
+            invertY = true;
+            tmp = err[1].lowerCap;
+            err[1].lowerCap = err[1].upperCap;
+            err[1].upperCap = tmp;
+        }
+
+        for (var i = 0; i < s.datapoints.points.length; i += ps) {
+            //parse
+            var errRanges = parseErrors(s, i);
+
+            //cycle xerr & yerr
+            for (var e = 0; e < err.length; e++) {
+                var minmax = [ax[e].min, ax[e].max];
+
+                //draw this error?
+                if (errRanges[e * err.length]) {
+                    //data coordinates
+                    var x = points[i],
+                        y = points[i + 1];
+
+                    //errorbar ranges
+                    var upper = [x, y][e] + errRanges[e * err.length + 1],
+                        lower = [x, y][e] - errRanges[e * err.length];
+
+                    //points outside of the canvas
+                    if (err[e].err === 'x') {
+                        if (y > ax[1].max || y < ax[1].min || upper < ax[0].min || lower > ax[0].max) {
+                            continue;
+                        }
+                    }
+
+                    if (err[e].err === 'y') {
+                        if (x > ax[0].max || x < ax[0].min || upper < ax[1].min || lower > ax[1].max) {
+                            continue;
+                        }
+                    }
+
+                    // prevent errorbars getting out of the canvas
+                    var drawUpper = true,
+                        drawLower = true;
+
+                    if (upper > minmax[1]) {
+                        drawUpper = false;
+                        upper = minmax[1];
+                    }
+                    if (lower < minmax[0]) {
+                        drawLower = false;
+                        lower = minmax[0];
+                    }
+
+                    //sanity check, in case some inverted axis hack is applied to flot
+                    if ((err[e].err === 'x' && invertX) || (err[e].err === 'y' && invertY)) {
+                        //swap coordinates
+                        tmp = lower;
+                        lower = upper;
+                        upper = tmp;
+                        tmp = drawLower;
+                        drawLower = drawUpper;
+                        drawUpper = tmp;
+                        tmp = minmax[0];
+                        minmax[0] = minmax[1];
+                        minmax[1] = tmp;
+                    }
+
+                    // convert to pixels
+                    x = ax[0].p2c(x);
+                    y = ax[1].p2c(y);
+                    upper = ax[e].p2c(upper);
+                    lower = ax[e].p2c(lower);
+                    minmax[0] = ax[e].p2c(minmax[0]);
+                    minmax[1] = ax[e].p2c(minmax[1]);
+
+                    //same style as points by default
+                    var lw = err[e].lineWidth ? err[e].lineWidth : s.points.lineWidth,
+                        sw = s.points.shadowSize != null ? s.points.shadowSize : s.shadowSize;
+
+                    //shadow as for points
+                    if (lw > 0 && sw > 0) {
+                        var w = sw / 2;
+                        ctx.lineWidth = w;
+                        ctx.strokeStyle = "rgba(0,0,0,0.1)";
+                        drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, w + w / 2, minmax);
+
+                        ctx.strokeStyle = "rgba(0,0,0,0.2)";
+                        drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, w / 2, minmax);
+                    }
+
+                    ctx.strokeStyle = err[e].color
+                        ? err[e].color
+                        : s.color;
+                    ctx.lineWidth = lw;
+                    //draw it
+                    drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, 0, minmax);
+                }
+            }
+        }
+    }
+
+    function drawError(ctx, err, x, y, upper, lower, drawUpper, drawLower, radius, offset, minmax) {
+        //shadow offset
+        y += offset;
+        upper += offset;
+        lower += offset;
+
+        // error bar - avoid plotting over circles
+        if (err.err === 'x') {
+            if (upper > x + radius) drawPath(ctx, [[upper, y], [Math.max(x + radius, minmax[0]), y]]);
+            else drawUpper = false;
+
+            if (lower < x - radius) drawPath(ctx, [[Math.min(x - radius, minmax[1]), y], [lower, y]]);
+            else drawLower = false;
+        } else {
+            if (upper < y - radius) drawPath(ctx, [[x, upper], [x, Math.min(y - radius, minmax[0])]]);
+            else drawUpper = false;
+
+            if (lower > y + radius) drawPath(ctx, [[x, Math.max(y + radius, minmax[1])], [x, lower]]);
+            else drawLower = false;
+        }
+
+        //internal radius value in errorbar, allows to plot radius 0 points and still keep proper sized caps
+        //this is a way to get errorbars on lines without visible connecting dots
+        radius = err.radius != null
+            ? err.radius
+            : radius;
+
+        // upper cap
+        if (drawUpper) {
+            if (err.upperCap === '-') {
+                if (err.err === 'x') drawPath(ctx, [[upper, y - radius], [upper, y + radius]]);
+                else drawPath(ctx, [[x - radius, upper], [x + radius, upper]]);
+            } else if ($.isFunction(err.upperCap)) {
+                if (err.err === 'x') err.upperCap(ctx, upper, y, radius);
+                else err.upperCap(ctx, x, upper, radius);
+            }
+        }
+        // lower cap
+        if (drawLower) {
+            if (err.lowerCap === '-') {
+                if (err.err === 'x') drawPath(ctx, [[lower, y - radius], [lower, y + radius]]);
+                else drawPath(ctx, [[x - radius, lower], [x + radius, lower]]);
+            } else if ($.isFunction(err.lowerCap)) {
+                if (err.err === 'x') err.lowerCap(ctx, lower, y, radius);
+                else err.lowerCap(ctx, x, lower, radius);
+            }
+        }
+    }
+
+    function drawPath(ctx, pts) {
+        ctx.beginPath();
+        ctx.moveTo(pts[0][0], pts[0][1]);
+        for (var p = 1; p < pts.length; p++) {
+            ctx.lineTo(pts[p][0], pts[p][1]);
+        }
+
+        ctx.stroke();
+    }
+
+    function draw(plot, ctx) {
+        var plotOffset = plot.getPlotOffset();
+
+        ctx.save();
+        ctx.translate(plotOffset.left, plotOffset.top);
+        $.each(plot.getData(), function (i, s) {
+            if (s.points.errorbars && (s.points.xerr.show || s.points.yerr.show)) {
+                drawSeriesErrors(plot, ctx, s);
+            }
+        });
+        ctx.restore();
+    }
+
+    function init(plot) {
+        plot.hooks.processRawData.push(processRawData);
+        plot.hooks.draw.push(draw);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'errorbars',
+        version: '1.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.fillbetween.js

@@ -0,0 +1,254 @@
+/* Flot plugin for computing bottoms for filled line and bar charts.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The case: you've got two series that you want to fill the area between. In Flot
+terms, you need to use one as the fill bottom of the other. You can specify the
+bottom of each data point as the third coordinate manually, or you can use this
+plugin to compute it for you.
+
+In order to name the other series, you need to give it an id, like this:
+
+    var dataset = [
+        { data: [ ... ], id: "foo" } ,         // use default bottom
+        { data: [ ... ], fillBetween: "foo" }, // use first dataset as bottom
+    ];
+
+    $.plot($("#placeholder"), dataset, { lines: { show: true, fill: true }});
+
+As a convenience, if the id given is a number that doesn't appear as an id in
+the series, it is interpreted as the index in the array instead (so fillBetween:
+0 can also mean the first series).
+
+Internally, the plugin modifies the datapoints in each series. For line series,
+extra data points might be inserted through interpolation. Note that at points
+where the bottom line is not defined (due to a null point or start/end of line),
+the current line will show a gap too. The algorithm comes from the
+jquery.flot.stack.js plugin, possibly some code could be shared.
+
+*/
+
+(function ($) {
+    var options = {
+        series: {
+            fillBetween: null    // or number
+        }
+    };
+
+    function init(plot) {
+        function findBottomSeries(s, allseries) {
+            var i;
+
+            for (i = 0; i < allseries.length; ++i) {
+                if (allseries[ i ].id === s.fillBetween) {
+                    return allseries[ i ];
+                }
+            }
+
+            if (typeof s.fillBetween === "number") {
+                if (s.fillBetween < 0 || s.fillBetween >= allseries.length) {
+                    return null;
+                }
+                return allseries[ s.fillBetween ];
+            }
+
+            return null;
+        }
+
+        function computeFormat(plot, s, data, datapoints) {
+            if (s.fillBetween == null) {
+                return;
+            }
+            
+            format = datapoints.format;
+            var plotHasId = function(id) {
+                var plotData = plot.getData();
+                for (i = 0; i < plotData.length; i++) {
+                    if (plotData[i].id === id) {
+                        return true;
+                    }
+                }
+
+                return false;
+            }
+
+            if (!format) {
+                format = [];
+
+                format.push({ 
+                    x: true, 
+                    number: true, 
+                    computeRange: s.xaxis.options.autoScale !== 'none',
+                    required: true 
+                });
+                format.push({ 
+                    y: true, 
+                    number: true, 
+                    computeRange: s.yaxis.options.autoScale !== 'none',
+                    required: true 
+                });
+
+                if (s.fillBetween !== undefined && s.fillBetween !== '' && plotHasId(s.fillBetween) && s.fillBetween !== s.id) {
+                    format.push({
+                        x: false,
+                        y: true,
+                        number: true,
+                        required: false,
+                        computeRange: s.yaxis.options.autoScale !== 'none',
+                        defaultValue: 0
+                    });
+                }
+
+                datapoints.format = format;
+            }
+        }
+
+        function computeFillBottoms(plot, s, datapoints) {
+            if (s.fillBetween == null) {
+                return;
+            }
+
+            var other = findBottomSeries(s, plot.getData());
+
+            if (!other) {
+                return;
+            }
+
+            var ps = datapoints.pointsize,
+                points = datapoints.points,
+                otherps = other.datapoints.pointsize,
+                otherpoints = other.datapoints.points,
+                newpoints = [],
+                px, py, intery, qx, qy, bottom,
+                withlines = s.lines.show,
+                withbottom = ps > 2 && datapoints.format[2].y,
+                withsteps = withlines && s.lines.steps,
+                fromgap = true,
+                i = 0,
+                j = 0,
+                l, m;
+
+            while (true) {
+                if (i >= points.length) {
+                    break;
+                }
+
+                l = newpoints.length;
+
+                if (points[ i ] == null) {
+                    // copy gaps
+                    for (m = 0; m < ps; ++m) {
+                        newpoints.push(points[ i + m ]);
+                    }
+
+                    i += ps;
+                } else if (j >= otherpoints.length) {
+                    // for lines, we can't use the rest of the points
+                    if (!withlines) {
+                        for (m = 0; m < ps; ++m) {
+                            newpoints.push(points[ i + m ]);
+                        }
+                    }
+
+                    i += ps;
+                } else if (otherpoints[ j ] == null) {
+                    // oops, got a gap
+                    for (m = 0; m < ps; ++m) {
+                        newpoints.push(null);
+                    }
+
+                    fromgap = true;
+                    j += otherps;
+                } else {
+                    // cases where we actually got two points
+                    px = points[ i ];
+                    py = points[ i + 1 ];
+                    qx = otherpoints[ j ];
+                    qy = otherpoints[ j + 1 ];
+                    bottom = 0;
+
+                    if (px === qx) {
+                        for (m = 0; m < ps; ++m) {
+                            newpoints.push(points[ i + m ]);
+                        }
+
+                        //newpoints[ l + 1 ] += qy;
+                        bottom = qy;
+
+                        i += ps;
+                        j += otherps;
+                    } else if (px > qx) {
+                        // we got past point below, might need to
+                        // insert interpolated extra point
+
+                        if (withlines && i > 0 && points[ i - ps ] != null) {
+                            intery = py + (points[ i - ps + 1 ] - py) * (qx - px) / (points[ i - ps ] - px);
+                            newpoints.push(qx);
+                            newpoints.push(intery);
+                            for (m = 2; m < ps; ++m) {
+                                newpoints.push(points[ i + m ]);
+                            }
+                            bottom = qy;
+                        }
+
+                        j += otherps;
+                    } else {
+                        // px < qx
+                        // if we come from a gap, we just skip this point
+
+                        if (fromgap && withlines) {
+                            i += ps;
+                            continue;
+                        }
+
+                        for (m = 0; m < ps; ++m) {
+                            newpoints.push(points[ i + m ]);
+                        }
+
+                        // we might be able to interpolate a point below,
+                        // this can give us a better y
+
+                        if (withlines && j > 0 && otherpoints[ j - otherps ] != null) {
+                            bottom = qy + (otherpoints[ j - otherps + 1 ] - qy) * (px - qx) / (otherpoints[ j - otherps ] - qx);
+                        }
+
+                        //newpoints[l + 1] += bottom;
+
+                        i += ps;
+                    }
+
+                    fromgap = false;
+
+                    if (l !== newpoints.length && withbottom) {
+                        newpoints[ l + 2 ] = bottom;
+                    }
+                }
+
+                // maintain the line steps invariant
+
+                if (withsteps && l !== newpoints.length && l > 0 &&
+                    newpoints[ l ] !== null &&
+                    newpoints[ l ] !== newpoints[ l - ps ] &&
+                    newpoints[ l + 1 ] !== newpoints[ l - ps + 1 ]) {
+                    for (m = 0; m < ps; ++m) {
+                        newpoints[ l + ps + m ] = newpoints[ l + m ];
+                    }
+                    newpoints[ l + 1 ] = newpoints[ l - ps + 1 ];
+                }
+            }
+
+            datapoints.points = newpoints;
+        }
+
+        plot.hooks.processRawData.push(computeFormat);
+        plot.hooks.processDatapoints.push(computeFillBottoms);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: "fillbetween",
+        version: "1.0"
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.flatdata.js

@@ -0,0 +1,47 @@
+/* Support for flat 1D data series.
+
+A 1D flat data series is a data series in the form of a regular 1D array. The
+main reason for using a flat data series is that it performs better, consumes
+less memory and generates less garbage collection than the regular flot format.
+
+Example:
+
+    plot.setData([[[0,0], [1,1], [2,2], [3,3]]]); // regular flot format
+    plot.setData([{flatdata: true, data: [0, 1, 2, 3]}]); // flatdata format
+
+Set series.flatdata to true to enable this plugin.
+
+You can use series.start to specify the starting index of the series (default is 0)
+You can use series.step to specify the interval between consecutive indexes of the series (default is 1)
+*/
+
+/* global jQuery*/
+
+(function ($) {
+    'use strict';
+
+    function process1DRawData(plot, series, data, datapoints) {
+        if (series.flatdata === true) {
+            var start = series.start || 0;
+            var step = typeof series.step === 'number' ? series.step : 1;
+            datapoints.pointsize = 2;
+            for (var i = 0, j = 0; i < data.length; i++, j += 2) {
+                datapoints.points[j] = start + (i * step);
+                datapoints.points[j + 1] = data[i];
+            }
+            if (datapoints.points !== undefined) {
+                datapoints.points.length = data.length * 2;
+            } else {
+                datapoints.points = [];
+            }
+        }
+    }
+
+    $.plot.plugins.push({
+        init: function(plot) {
+            plot.hooks.processRawData.push(process1DRawData);
+        },
+        name: 'flatdata',
+        version: '0.0.2'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.hover.js

@@ -0,0 +1,350 @@
+/* global jQuery */
+
+/**
+## jquery.flot.hover.js
+
+This plugin is used for mouse hover and tap on a point of plot series.
+It supports the following options:
+```js
+grid: {
+    hoverable: false, //to trigger plothover event on mouse hover or tap on a point
+    clickable: false //to trigger plotclick event on mouse hover
+}
+```
+
+It listens to native mouse move event or click, as well as artificial generated
+tap and touchevent.
+
+When the mouse is over a point or a tap on a point is performed, that point or
+the correscponding bar will be highlighted and a "plothover" event will be generated.
+
+Custom "touchevent" is triggered when any touch interaction is made. Hover plugin
+handles this events by unhighlighting all of the previously highlighted points and generates
+"plothovercleanup" event to notify any part that is handling plothover (for exemple to cleanup
+the tooltip from webcharts).
+*/
+
+(function($) {
+    'use strict';
+
+    var options = {
+        grid: {
+            hoverable: false,
+            clickable: false
+        }
+    };
+
+    var browser = $.plot.browser;
+
+    var eventType = {
+        click: 'click',
+        hover: 'hover'
+    }
+
+    function init(plot) {
+        var lastMouseMoveEvent;
+        var highlights = [];
+
+        function bindEvents(plot, eventHolder) {
+            var o = plot.getOptions();
+
+            if (o.grid.hoverable || o.grid.clickable) {
+                eventHolder[0].addEventListener('touchevent', triggerCleanupEvent, false);
+                eventHolder[0].addEventListener('tap', generatePlothoverEvent, false);
+            }
+
+            if (o.grid.clickable) {
+                eventHolder.bind("click", onClick);
+            }
+
+            if (o.grid.hoverable) {
+                eventHolder.bind("mousemove", onMouseMove);
+
+                // Use bind, rather than .mouseleave, because we officially
+                // still support jQuery 1.2.6, which doesn't define a shortcut
+                // for mouseenter or mouseleave.  This was a bug/oversight that
+                // was fixed somewhere around 1.3.x.  We can return to using
+                // .mouseleave when we drop support for 1.2.6.
+
+                eventHolder.bind("mouseleave", onMouseLeave);
+            }
+        }
+
+        function shutdown(plot, eventHolder) {
+            eventHolder[0].removeEventListener('tap', generatePlothoverEvent);
+            eventHolder[0].removeEventListener('touchevent', triggerCleanupEvent);
+            eventHolder.unbind("mousemove", onMouseMove);
+            eventHolder.unbind("mouseleave", onMouseLeave);
+            eventHolder.unbind("click", onClick);
+            highlights = [];
+        }
+
+
+        function generatePlothoverEvent(e) {
+            var o = plot.getOptions(),
+                newEvent = new CustomEvent('mouseevent');
+
+            //transform from touch event to mouse event format
+            newEvent.pageX = e.detail.changedTouches[0].pageX;
+            newEvent.pageY = e.detail.changedTouches[0].pageY;
+            newEvent.clientX = e.detail.changedTouches[0].clientX;
+            newEvent.clientY = e.detail.changedTouches[0].clientY;
+
+            if (o.grid.hoverable) {
+                doTriggerClickHoverEvent(newEvent, eventType.hover, 30);
+            }
+            return false;
+        }
+
+        function doTriggerClickHoverEvent(event, eventType, searchDistance) {
+            var series = plot.getData();
+            if (event !== undefined
+                && series.length > 0
+                && series[0].xaxis.c2p !== undefined
+                && series[0].yaxis.c2p !== undefined) {
+                var eventToTrigger = "plot" + eventType;
+                var seriesFlag = eventType + "able";
+                triggerClickHoverEvent(eventToTrigger, event,
+                    function(i) {
+                        return series[i][seriesFlag] !== false;
+                    }, searchDistance);
+            }
+        }
+
+        function onMouseMove(e) {
+            lastMouseMoveEvent = e;
+            plot.getPlaceholder()[0].lastMouseMoveEvent = e;
+            doTriggerClickHoverEvent(e, eventType.hover);
+        }
+
+        function onMouseLeave(e) {
+            lastMouseMoveEvent = undefined;
+            plot.getPlaceholder()[0].lastMouseMoveEvent = undefined;
+            triggerClickHoverEvent("plothover", e,
+                function(i) {
+                    return false;
+                });
+        }
+
+        function onClick(e) {
+            doTriggerClickHoverEvent(e, eventType.click);
+        }
+
+        function triggerCleanupEvent() {
+            plot.unhighlight();
+            plot.getPlaceholder().trigger('plothovercleanup');
+        }
+
+        // trigger click or hover event (they send the same parameters
+        // so we share their code)
+        function triggerClickHoverEvent(eventname, event, seriesFilter, searchDistance) {
+            var options = plot.getOptions(),
+                offset = plot.offset(),
+                page = browser.getPageXY(event),
+                canvasX = page.X - offset.left,
+                canvasY = page.Y - offset.top,
+                pos = plot.c2p({
+                    left: canvasX,
+                    top: canvasY
+                }),
+                distance = searchDistance !== undefined ? searchDistance : options.grid.mouseActiveRadius;
+
+            pos.pageX = page.X;
+            pos.pageY = page.Y;
+
+            var item = plot.findNearbyItem(canvasX, canvasY, seriesFilter, distance);
+
+            if (item) {
+                // fill in mouse pos for any listeners out there
+                item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left, 10);
+                item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top, 10);
+            }
+
+            if (options.grid.autoHighlight) {
+                // clear auto-highlights
+                for (var i = 0; i < highlights.length; ++i) {
+                    var h = highlights[i];
+                    if ((h.auto === eventname &&
+                        !(item && h.series === item.series &&
+                            h.point[0] === item.datapoint[0] &&
+                            h.point[1] === item.datapoint[1])) || !item) {
+                        unhighlight(h.series, h.point);
+                    }
+                }
+
+                if (item) {
+                    highlight(item.series, item.datapoint, eventname);
+                }
+            }
+
+            plot.getPlaceholder().trigger(eventname, [pos, item]);
+        }
+
+        function highlight(s, point, auto) {
+            if (typeof s === "number") {
+                s = plot.getData()[s];
+            }
+
+            if (typeof point === "number") {
+                var ps = s.datapoints.pointsize;
+                point = s.datapoints.points.slice(ps * point, ps * (point + 1));
+            }
+
+            var i = indexOfHighlight(s, point);
+            if (i === -1) {
+                highlights.push({
+                    series: s,
+                    point: point,
+                    auto: auto
+                });
+
+                plot.triggerRedrawOverlay();
+            } else if (!auto) {
+                highlights[i].auto = false;
+            }
+        }
+
+        function unhighlight(s, point) {
+            if (s == null && point == null) {
+                highlights = [];
+                plot.triggerRedrawOverlay();
+                return;
+            }
+
+            if (typeof s === "number") {
+                s = plot.getData()[s];
+            }
+
+            if (typeof point === "number") {
+                var ps = s.datapoints.pointsize;
+                point = s.datapoints.points.slice(ps * point, ps * (point + 1));
+            }
+
+            var i = indexOfHighlight(s, point);
+            if (i !== -1) {
+                highlights.splice(i, 1);
+
+                plot.triggerRedrawOverlay();
+            }
+        }
+
+        function indexOfHighlight(s, p) {
+            for (var i = 0; i < highlights.length; ++i) {
+                var h = highlights[i];
+                if (h.series === s &&
+                    h.point[0] === p[0] &&
+                    h.point[1] === p[1]) {
+                    return i;
+                }
+            }
+
+            return -1;
+        }
+
+        function processDatapoints() {
+            triggerCleanupEvent();
+            doTriggerClickHoverEvent(lastMouseMoveEvent, eventType.hover);
+        }
+
+        function setupGrid() {
+            doTriggerClickHoverEvent(lastMouseMoveEvent, eventType.hover);
+        }
+
+        function drawOverlay(plot, octx, overlay) {
+            var plotOffset = plot.getPlotOffset(),
+                i, hi;
+
+            octx.save();
+            octx.translate(plotOffset.left, plotOffset.top);
+            for (i = 0; i < highlights.length; ++i) {
+                hi = highlights[i];
+
+                if (hi.series.bars.show) drawBarHighlight(hi.series, hi.point, octx);
+                else drawPointHighlight(hi.series, hi.point, octx, plot);
+            }
+            octx.restore();
+        }
+
+        function drawPointHighlight(series, point, octx, plot) {
+            var x = point[0],
+                y = point[1],
+                axisx = series.xaxis,
+                axisy = series.yaxis,
+                highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();
+
+            if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) {
+                return;
+            }
+
+            var pointRadius = series.points.radius + series.points.lineWidth / 2;
+            octx.lineWidth = pointRadius;
+            octx.strokeStyle = highlightColor;
+            var radius = 1.5 * pointRadius;
+            x = axisx.p2c(x);
+            y = axisy.p2c(y);
+
+            octx.beginPath();
+            var symbol = series.points.symbol;
+            if (symbol === 'circle') {
+                octx.arc(x, y, radius, 0, 2 * Math.PI, false);
+            } else if (typeof symbol === 'string' && plot.drawSymbol && plot.drawSymbol[symbol]) {
+                plot.drawSymbol[symbol](octx, x, y, radius, false);
+            }
+
+            octx.closePath();
+            octx.stroke();
+        }
+
+        function drawBarHighlight(series, point, octx) {
+            var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
+                fillStyle = highlightColor,
+                barLeft;
+
+            var barWidth = series.bars.barWidth[0] || series.bars.barWidth;
+            switch (series.bars.align) {
+                case "left":
+                    barLeft = 0;
+                    break;
+                case "right":
+                    barLeft = -barWidth;
+                    break;
+                default:
+                    barLeft = -barWidth / 2;
+            }
+
+            octx.lineWidth = series.bars.lineWidth;
+            octx.strokeStyle = highlightColor;
+
+            var fillTowards = series.bars.fillTowards || 0,
+                bottom = fillTowards > series.yaxis.min ? Math.min(series.yaxis.max, fillTowards) : series.yaxis.min;
+
+            $.plot.drawSeries.drawBar(point[0], point[1], point[2] || bottom, barLeft, barLeft + barWidth,
+                function() {
+                    return fillStyle;
+                }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
+        }
+
+        function initHover(plot, options) {
+            plot.highlight = highlight;
+            plot.unhighlight = unhighlight;
+            if (options.grid.hoverable || options.grid.clickable) {
+                plot.hooks.drawOverlay.push(drawOverlay);
+                plot.hooks.processDatapoints.push(processDatapoints);
+                plot.hooks.setupGrid.push(setupGrid);
+            }
+
+            lastMouseMoveEvent = plot.getPlaceholder()[0].lastMouseMoveEvent;
+        }
+
+        plot.hooks.bindEvents.push(bindEvents);
+        plot.hooks.shutdown.push(shutdown);
+        plot.hooks.processOptions.push(initHover);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'hover',
+        version: '0.1'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.image.js

@@ -0,0 +1,249 @@
+/* Flot plugin for plotting images.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The data syntax is [ [ image, x1, y1, x2, y2 ], ... ] where (x1, y1) and
+(x2, y2) are where you intend the two opposite corners of the image to end up
+in the plot. Image must be a fully loaded Javascript image (you can make one
+with new Image()). If the image is not complete, it's skipped when plotting.
+
+There are two helpers included for retrieving images. The easiest work the way
+that you put in URLs instead of images in the data, like this:
+
+    [ "myimage.png", 0, 0, 10, 10 ]
+
+Then call $.plot.image.loadData( data, options, callback ) where data and
+options are the same as you pass in to $.plot. This loads the images, replaces
+the URLs in the data with the corresponding images and calls "callback" when
+all images are loaded (or failed loading). In the callback, you can then call
+$.plot with the data set. See the included example.
+
+A more low-level helper, $.plot.image.load(urls, callback) is also included.
+Given a list of URLs, it calls callback with an object mapping from URL to
+Image object when all images are loaded or have failed loading.
+
+The plugin supports these options:
+
+    series: {
+        images: {
+            show: boolean
+            anchor: "corner" or "center"
+            alpha: [ 0, 1 ]
+        }
+    }
+
+They can be specified for a specific series:
+
+    $.plot( $("#placeholder"), [{
+        data: [ ... ],
+        images: { ... }
+    ])
+
+Note that because the data format is different from usual data points, you
+can't use images with anything else in a specific data series.
+
+Setting "anchor" to "center" causes the pixels in the image to be anchored at
+the corner pixel centers inside of at the pixel corners, effectively letting
+half a pixel stick out to each side in the plot.
+
+A possible future direction could be support for tiling for large images (like
+Google Maps).
+
+*/
+
+(function ($) {
+    var options = {
+        series: {
+            images: {
+                show: false,
+                alpha: 1,
+                anchor: "corner" // or "center"
+            }
+        }
+    };
+
+    $.plot.image = {};
+
+    $.plot.image.loadDataImages = function (series, options, callback) {
+        var urls = [], points = [];
+
+        var defaultShow = options.series.images.show;
+
+        $.each(series, function (i, s) {
+            if (!(defaultShow || s.images.show)) {
+                return;
+            }
+
+            if (s.data) {
+                s = s.data;
+            }
+
+            $.each(s, function (i, p) {
+                if (typeof p[0] === "string") {
+                    urls.push(p[0]);
+                    points.push(p);
+                }
+            });
+        });
+
+        $.plot.image.load(urls, function (loadedImages) {
+            $.each(points, function (i, p) {
+                var url = p[0];
+                if (loadedImages[url]) {
+                    p[0] = loadedImages[url];
+                }
+            });
+
+            callback();
+        });
+    }
+
+    $.plot.image.load = function (urls, callback) {
+        var missing = urls.length, loaded = {};
+        if (missing === 0) {
+            callback({});
+        }
+
+        $.each(urls, function (i, url) {
+            var handler = function () {
+                --missing;
+                loaded[url] = this;
+
+                if (missing === 0) {
+                    callback(loaded);
+                }
+            };
+
+            $('<img />').load(handler).error(handler).attr('src', url);
+        });
+    };
+
+    function drawSeries(plot, ctx, series) {
+        var plotOffset = plot.getPlotOffset();
+
+        if (!series.images || !series.images.show) {
+            return;
+        }
+
+        var points = series.datapoints.points,
+            ps = series.datapoints.pointsize;
+
+        for (var i = 0; i < points.length; i += ps) {
+            var img = points[i],
+                x1 = points[i + 1], y1 = points[i + 2],
+                x2 = points[i + 3], y2 = points[i + 4],
+                xaxis = series.xaxis, yaxis = series.yaxis,
+                tmp;
+
+            // actually we should check img.complete, but it
+            // appears to be a somewhat unreliable indicator in
+            // IE6 (false even after load event)
+            if (!img || img.width <= 0 || img.height <= 0) {
+                continue;
+            }
+
+            if (x1 > x2) {
+                tmp = x2;
+                x2 = x1;
+                x1 = tmp;
+            }
+            if (y1 > y2) {
+                tmp = y2;
+                y2 = y1;
+                y1 = tmp;
+            }
+
+            // if the anchor is at the center of the pixel, expand the
+            // image by 1/2 pixel in each direction
+            if (series.images.anchor === "center") {
+                tmp = 0.5 * (x2 - x1) / (img.width - 1);
+                x1 -= tmp;
+                x2 += tmp;
+                tmp = 0.5 * (y2 - y1) / (img.height - 1);
+                y1 -= tmp;
+                y2 += tmp;
+            }
+
+            // clip
+            if (x1 === x2 || y1 === y2 ||
+                x1 >= xaxis.max || x2 <= xaxis.min ||
+                y1 >= yaxis.max || y2 <= yaxis.min) {
+                continue;
+            }
+
+            var sx1 = 0, sy1 = 0, sx2 = img.width, sy2 = img.height;
+            if (x1 < xaxis.min) {
+                sx1 += (sx2 - sx1) * (xaxis.min - x1) / (x2 - x1);
+                x1 = xaxis.min;
+            }
+
+            if (x2 > xaxis.max) {
+                sx2 += (sx2 - sx1) * (xaxis.max - x2) / (x2 - x1);
+                x2 = xaxis.max;
+            }
+
+            if (y1 < yaxis.min) {
+                sy2 += (sy1 - sy2) * (yaxis.min - y1) / (y2 - y1);
+                y1 = yaxis.min;
+            }
+
+            if (y2 > yaxis.max) {
+                sy1 += (sy1 - sy2) * (yaxis.max - y2) / (y2 - y1);
+                y2 = yaxis.max;
+            }
+
+            x1 = xaxis.p2c(x1);
+            x2 = xaxis.p2c(x2);
+            y1 = yaxis.p2c(y1);
+            y2 = yaxis.p2c(y2);
+
+            // the transformation may have swapped us
+            if (x1 > x2) {
+                tmp = x2;
+                x2 = x1;
+                x1 = tmp;
+            }
+            if (y1 > y2) {
+                tmp = y2;
+                y2 = y1;
+                y1 = tmp;
+            }
+
+            tmp = ctx.globalAlpha;
+            ctx.globalAlpha *= series.images.alpha;
+            ctx.drawImage(img,
+                          sx1, sy1, sx2 - sx1, sy2 - sy1,
+                          x1 + plotOffset.left, y1 + plotOffset.top,
+                          x2 - x1, y2 - y1);
+            ctx.globalAlpha = tmp;
+        }
+    }
+
+    function processRawData(plot, series, data, datapoints) {
+        if (!series.images.show) {
+            return;
+        }
+
+        // format is Image, x1, y1, x2, y2 (opposite corners)
+        datapoints.format = [
+            { required: true },
+            { x: true, number: true, required: true },
+            { y: true, number: true, required: true },
+            { x: true, number: true, required: true },
+            { y: true, number: true, required: true }
+        ];
+    }
+
+    function init(plot) {
+        plot.hooks.processRawData.push(processRawData);
+        plot.hooks.drawSeries.push(drawSeries);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'image',
+        version: '1.1'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.legend.js

@@ -0,0 +1,437 @@
+/* Flot plugin for drawing legends.
+
+*/
+
+(function($) {
+    var defaultOptions = {
+        legend: {
+            show: false,
+            noColumns: 1,
+            labelFormatter: null, // fn: string -> string
+            container: null, // container (as jQuery object) to put legend in, null means default on top of graph
+            position: 'ne', // position of default legend container within plot
+            margin: 5, // distance from grid edge to default legend container within plot
+            sorted: null // default to no legend sorting
+        }
+    };
+
+    function insertLegend(plot, options, placeholder, legendEntries) {
+        // clear before redraw
+        if (options.legend.container != null) {
+            $(options.legend.container).html('');
+        } else {
+            placeholder.find('.legend').remove();
+        }
+
+        if (!options.legend.show) {
+            return;
+        }
+
+        // Save the legend entries in legend options
+        var entries = options.legend.legendEntries = legendEntries,
+            plotOffset = options.legend.plotOffset = plot.getPlotOffset(),
+            html = [],
+            entry, labelHtml, iconHtml,
+            j = 0,
+            i,
+            pos = "",
+            p = options.legend.position,
+            m = options.legend.margin,
+            shape = {
+                name: '',
+                label: '',
+                xPos: '',
+                yPos: ''
+            };
+
+        html[j++] = '<svg class="legendLayer" style="width:inherit;height:inherit;">';
+        html[j++] = '<rect class="background" width="100%" height="100%"/>';
+        html[j++] = svgShapeDefs;
+
+        var left = 0;
+        var columnWidths = [];
+        var style = window.getComputedStyle(document.querySelector('body'));
+        for (i = 0; i < entries.length; ++i) {
+            var columnIndex = i % options.legend.noColumns;
+            entry = entries[i];
+            shape.label = entry.label;
+            var info = plot.getSurface().getTextInfo('', shape.label, {
+                style: style.fontStyle,
+                variant: style.fontVariant,
+                weight: style.fontWeight,
+                size: parseInt(style.fontSize),
+                lineHeight: parseInt(style.lineHeight),
+                family: style.fontFamily
+            });
+
+            var labelWidth = info.width;
+            // 36px = 1.5em + 6px margin
+            var iconWidth = 48;
+            if (columnWidths[columnIndex]) {
+                if (labelWidth > columnWidths[columnIndex]) {
+                    columnWidths[columnIndex] = labelWidth + iconWidth;
+                }
+            } else {
+                columnWidths[columnIndex] = labelWidth + iconWidth;
+            }
+        }
+
+        // Generate html for icons and labels from a list of entries
+        for (i = 0; i < entries.length; ++i) {
+            var columnIndex = i % options.legend.noColumns;
+            entry = entries[i];
+            iconHtml = '';
+            shape.label = entry.label;
+            shape.xPos = (left + 3) + 'px';
+            left += columnWidths[columnIndex];
+            if ((i + 1) % options.legend.noColumns === 0) {
+                left = 0;
+            }
+            shape.yPos = Math.floor(i / options.legend.noColumns) * 1.5 + 'em';
+            // area
+            if (entry.options.lines.show && entry.options.lines.fill) {
+                shape.name = 'area';
+                shape.fillColor = entry.color;
+                iconHtml += getEntryIconHtml(shape);
+            }
+            // bars
+            if (entry.options.bars.show) {
+                shape.name = 'bar';
+                shape.fillColor = entry.color;
+                iconHtml += getEntryIconHtml(shape);
+            }
+            // lines
+            if (entry.options.lines.show && !entry.options.lines.fill) {
+                shape.name = 'line';
+                shape.strokeColor = entry.color;
+                shape.strokeWidth = entry.options.lines.lineWidth;
+                iconHtml += getEntryIconHtml(shape);
+            }
+            // points
+            if (entry.options.points.show) {
+                shape.name = entry.options.points.symbol;
+                shape.strokeColor = entry.color;
+                shape.fillColor = entry.options.points.fillColor;
+                shape.strokeWidth = entry.options.points.lineWidth;
+                iconHtml += getEntryIconHtml(shape);
+            }
+
+            labelHtml = '<text x="' + shape.xPos + '" y="' + shape.yPos + '" text-anchor="start"><tspan dx="2em" dy="1.2em">' + shape.label + '</tspan></text>'
+            html[j++] = '<g>' + iconHtml + labelHtml + '</g>';
+        }
+
+        html[j++] = '</svg>';
+        if (m[0] == null) {
+            m = [m, m];
+        }
+
+        if (p.charAt(0) === 'n') {
+            pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
+        } else if (p.charAt(0) === 's') {
+            pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
+        }
+
+        if (p.charAt(1) === 'e') {
+            pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
+        } else if (p.charAt(1) === 'w') {
+            pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
+        }
+
+        var width = 6;
+        for (i = 0; i < columnWidths.length; ++i) {
+            width += columnWidths[i];
+        }
+
+        var legendEl,
+            height = Math.ceil(entries.length / options.legend.noColumns) * 1.6;
+        if (!options.legend.container) {
+            legendEl = $('<div class="legend" style="position:absolute;' + pos + '">' + html.join('') + '</div>').appendTo(placeholder);
+            legendEl.css('width', width + 'px');
+            legendEl.css('height', height + 'em');
+            legendEl.css('pointerEvents', 'none');
+        } else {
+            legendEl = $(html.join('')).appendTo(options.legend.container)[0];
+            options.legend.container.style.width = width + 'px';
+            options.legend.container.style.height = height + 'em';
+        }
+    }
+
+    // Generate html for a shape
+    function getEntryIconHtml(shape) {
+        var html = '',
+            name = shape.name,
+            x = shape.xPos,
+            y = shape.yPos,
+            fill = shape.fillColor,
+            stroke = shape.strokeColor,
+            width = shape.strokeWidth;
+        switch (name) {
+            case 'circle':
+                html = '<use xlink:href="#circle" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    'fill="' + fill + '" ' +
+                    'stroke="' + stroke + '" ' +
+                    'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            case 'diamond':
+                html = '<use xlink:href="#diamond" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    'fill="' + fill + '" ' +
+                    'stroke="' + stroke + '" ' +
+                    'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            case 'cross':
+                html = '<use xlink:href="#cross" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    // 'fill="' + fill + '" ' +
+                    'stroke="' + stroke + '" ' +
+                    'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            case 'rectangle':
+                html = '<use xlink:href="#rectangle" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    'fill="' + fill + '" ' +
+                    'stroke="' + stroke + '" ' +
+                    'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            case 'plus':
+                html = '<use xlink:href="#plus" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    // 'fill="' + fill + '" ' +
+                    'stroke="' + stroke + '" ' +
+                    'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            case 'bar':
+                html = '<use xlink:href="#bars" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    'fill="' + fill + '" ' +
+                    // 'stroke="' + stroke + '" ' +
+                    // 'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            case 'area':
+                html = '<use xlink:href="#area" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    'fill="' + fill + '" ' +
+                    // 'stroke="' + stroke + '" ' +
+                    // 'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            case 'line':
+                html = '<use xlink:href="#line" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    // 'fill="' + fill + '" ' +
+                    'stroke="' + stroke + '" ' +
+                    'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+                break;
+            default:
+                // default is circle
+                html = '<use xlink:href="#circle" class="legendIcon" ' +
+                    'x="' + x + '" ' +
+                    'y="' + y + '" ' +
+                    'fill="' + fill + '" ' +
+                    'stroke="' + stroke + '" ' +
+                    'stroke-width="' + width + '" ' +
+                    'width="1.5em" height="1.5em"' +
+                    '/>';
+        }
+
+        return html;
+    }
+
+    // Define svg symbols for shapes
+    var svgShapeDefs = '' +
+        '<defs>' +
+            '<symbol id="line" fill="none" viewBox="-5 -5 25 25">' +
+                '<polyline points="0,15 5,5 10,10 15,0"/>' +
+            '</symbol>' +
+
+            '<symbol id="area" stroke-width="1" viewBox="-5 -5 25 25">' +
+                '<polyline points="0,15 5,5 10,10 15,0, 15,15, 0,15"/>' +
+            '</symbol>' +
+
+            '<symbol id="bars" stroke-width="1" viewBox="-5 -5 25 25">' +
+                '<polyline points="1.5,15.5 1.5,12.5, 4.5,12.5 4.5,15.5 6.5,15.5 6.5,3.5, 9.5,3.5 9.5,15.5 11.5,15.5 11.5,7.5 14.5,7.5 14.5,15.5 1.5,15.5"/>' +
+            '</symbol>' +
+
+            '<symbol id="circle" viewBox="-5 -5 25 25">' +
+                '<circle cx="0" cy="15" r="2.5"/>' +
+                '<circle cx="5" cy="5" r="2.5"/>' +
+                '<circle cx="10" cy="10" r="2.5"/>' +
+                '<circle cx="15" cy="0" r="2.5"/>' +
+            '</symbol>' +
+
+            '<symbol id="rectangle" viewBox="-5 -5 25 25">' +
+                '<rect x="-2.1" y="12.9" width="4.2" height="4.2"/>' +
+                '<rect x="2.9" y="2.9" width="4.2" height="4.2"/>' +
+                '<rect x="7.9" y="7.9" width="4.2" height="4.2"/>' +
+                '<rect x="12.9" y="-2.1" width="4.2" height="4.2"/>' +
+            '</symbol>' +
+
+            '<symbol id="diamond" viewBox="-5 -5 25 25">' +
+                '<path d="M-3,15 L0,12 L3,15, L0,18 Z"/>' +
+                '<path d="M2,5 L5,2 L8,5, L5,8 Z"/>' +
+                '<path d="M7,10 L10,7 L13,10, L10,13 Z"/>' +
+                '<path d="M12,0 L15,-3 L18,0, L15,3 Z"/>' +
+            '</symbol>' +
+
+            '<symbol id="cross" fill="none" viewBox="-5 -5 25 25">' +
+                '<path d="M-2.1,12.9 L2.1,17.1, M2.1,12.9 L-2.1,17.1 Z"/>' +
+                '<path d="M2.9,2.9 L7.1,7.1 M7.1,2.9 L2.9,7.1 Z"/>' +
+                '<path d="M7.9,7.9 L12.1,12.1 M12.1,7.9 L7.9,12.1 Z"/>' +
+                '<path d="M12.9,-2.1 L17.1,2.1 M17.1,-2.1 L12.9,2.1 Z"/>' +
+            '</symbol>' +
+
+            '<symbol id="plus" fill="none" viewBox="-5 -5 25 25">' +
+                '<path d="M0,12 L0,18, M-3,15 L3,15 Z"/>' +
+                '<path d="M5,2 L5,8 M2,5 L8,5 Z"/>' +
+                '<path d="M10,7 L10,13 M7,10 L13,10 Z"/>' +
+                '<path d="M15,-3 L15,3 M12,0 L18,0 Z"/>' +
+            '</symbol>' +
+        '</defs>';
+
+    // Generate a list of legend entries in their final order
+    function getLegendEntries(series, labelFormatter, sorted) {
+        var lf = labelFormatter,
+            legendEntries = series.reduce(function(validEntries, s, i) {
+                var labelEval = (lf ? lf(s.label, s) : s.label)
+                if (s.hasOwnProperty("label") ? labelEval : true) {
+                    var entry = {
+                        label: labelEval || 'Plot ' + (i + 1),
+                        color: s.color,
+                        options: {
+                            lines: s.lines,
+                            points: s.points,
+                            bars: s.bars
+                        }
+                    }
+                    validEntries.push(entry)
+                }
+                return validEntries;
+            }, []);
+
+        // Sort the legend using either the default or a custom comparator
+        if (sorted) {
+            if ($.isFunction(sorted)) {
+                legendEntries.sort(sorted);
+            } else if (sorted === 'reverse') {
+                legendEntries.reverse();
+            } else {
+                var ascending = (sorted !== 'descending');
+                legendEntries.sort(function(a, b) {
+                    return a.label === b.label
+                        ? 0
+                        : ((a.label < b.label) !== ascending ? 1 : -1 // Logical XOR
+                        );
+                });
+            }
+        }
+
+        return legendEntries;
+    }
+
+    // return false if opts1 same as opts2
+    function checkOptions(opts1, opts2) {
+        for (var prop in opts1) {
+            if (opts1.hasOwnProperty(prop)) {
+                if (opts1[prop] !== opts2[prop]) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    // Compare two lists of legend entries
+    function shouldRedraw(oldEntries, newEntries) {
+        if (!oldEntries || !newEntries) {
+            return true;
+        }
+
+        if (oldEntries.length !== newEntries.length) {
+            return true;
+        }
+        var i, newEntry, oldEntry, newOpts, oldOpts;
+        for (i = 0; i < newEntries.length; i++) {
+            newEntry = newEntries[i];
+            oldEntry = oldEntries[i];
+
+            if (newEntry.label !== oldEntry.label) {
+                return true;
+            }
+
+            if (newEntry.color !== oldEntry.color) {
+                return true;
+            }
+
+            // check for changes in lines options
+            newOpts = newEntry.options.lines;
+            oldOpts = oldEntry.options.lines;
+            if (checkOptions(newOpts, oldOpts)) {
+                return true;
+            }
+
+            // check for changes in points options
+            newOpts = newEntry.options.points;
+            oldOpts = oldEntry.options.points;
+            if (checkOptions(newOpts, oldOpts)) {
+                return true;
+            }
+
+            // check for changes in bars options
+            newOpts = newEntry.options.bars;
+            oldOpts = oldEntry.options.bars;
+            if (checkOptions(newOpts, oldOpts)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    function init(plot) {
+        plot.hooks.setupGrid.push(function (plot) {
+            var options = plot.getOptions();
+            var series = plot.getData(),
+                labelFormatter = options.legend.labelFormatter,
+                oldEntries = options.legend.legendEntries,
+                oldPlotOffset = options.legend.plotOffset,
+                newEntries = getLegendEntries(series, labelFormatter, options.legend.sorted),
+                newPlotOffset = plot.getPlotOffset();
+
+            if (shouldRedraw(oldEntries, newEntries) ||
+                checkOptions(oldPlotOffset, newPlotOffset)) {
+                insertLegend(plot, options, plot.getPlaceholder(), newEntries);
+            }
+        });
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: defaultOptions,
+        name: 'legend',
+        version: '1.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.logaxis.js

@@ -0,0 +1,298 @@
+/* Pretty handling of log axes.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Copyright (c) 2015 Ciprian Ceteras cipix2000@gmail.com.
+Copyright (c) 2017 Raluca Portase
+Licensed under the MIT license.
+
+Set axis.mode to "log" to enable.
+*/
+
+/* global jQuery*/
+
+/**
+## jquery.flot.logaxis
+This plugin is used to create logarithmic axis. This includes tick generation,
+formatters and transformers to and from logarithmic representation.
+
+### Methods and hooks
+*/
+
+(function ($) {
+    'use strict';
+
+    var options = {
+        xaxis: {}
+    };
+
+    /*tick generators and formatters*/
+    var PREFERRED_LOG_TICK_VALUES = computePreferedLogTickValues(Number.MAX_VALUE, 10),
+        EXTENDED_LOG_TICK_VALUES = computePreferedLogTickValues(Number.MAX_VALUE, 4);
+
+    function computePreferedLogTickValues(endLimit, rangeStep) {
+        var log10End = Math.floor(Math.log(endLimit) * Math.LOG10E) - 1,
+            log10Start = -log10End,
+            val, range, vals = [];
+
+        for (var power = log10Start; power <= log10End; power++) {
+            range = parseFloat('1e' + power);
+            for (var mult = 1; mult < 9; mult += rangeStep) {
+                val = range * mult;
+                vals.push(val);
+            }
+        }
+        return vals;
+    }
+
+    /**
+    - logTickGenerator(plot, axis, noTicks)
+
+    Generates logarithmic ticks, depending on axis range.
+    In case the number of ticks that can be generated is less than the expected noTicks/4,
+    a linear tick generation is used.
+    */
+    var logTickGenerator = function (plot, axis, noTicks) {
+        var ticks = [],
+            minIdx = -1,
+            maxIdx = -1,
+            surface = plot.getCanvas(),
+            logTickValues = PREFERRED_LOG_TICK_VALUES,
+            min = clampAxis(axis, plot),
+            max = axis.max;
+
+        if (!noTicks) {
+            noTicks = 0.3 * Math.sqrt(axis.direction === "x" ? surface.width : surface.height);
+        }
+
+        PREFERRED_LOG_TICK_VALUES.some(function (val, i) {
+            if (val >= min) {
+                minIdx = i;
+                return true;
+            } else {
+                return false;
+            }
+        });
+
+        PREFERRED_LOG_TICK_VALUES.some(function (val, i) {
+            if (val >= max) {
+                maxIdx = i;
+                return true;
+            } else {
+                return false;
+            }
+        });
+
+        if (maxIdx === -1) {
+            maxIdx = PREFERRED_LOG_TICK_VALUES.length - 1;
+        }
+
+        if (maxIdx - minIdx <= noTicks / 4 && logTickValues.length !== EXTENDED_LOG_TICK_VALUES.length) {
+            //try with multiple of 5 for tick values
+            logTickValues = EXTENDED_LOG_TICK_VALUES;
+            minIdx *= 2;
+            maxIdx *= 2;
+        }
+
+        var lastDisplayed = null,
+            inverseNoTicks = 1 / noTicks,
+            tickValue, pixelCoord, tick;
+
+        // Count the number of tick values would appear, if we can get at least
+        // nTicks / 4 accept them.
+        if (maxIdx - minIdx >= noTicks / 4) {
+            for (var idx = maxIdx; idx >= minIdx; idx--) {
+                tickValue = logTickValues[idx];
+                pixelCoord = (Math.log(tickValue) - Math.log(min)) / (Math.log(max) - Math.log(min));
+                tick = tickValue;
+
+                if (lastDisplayed === null) {
+                    lastDisplayed = {
+                        pixelCoord: pixelCoord,
+                        idealPixelCoord: pixelCoord
+                    };
+                } else {
+                    if (Math.abs(pixelCoord - lastDisplayed.pixelCoord) >= inverseNoTicks) {
+                        lastDisplayed = {
+                            pixelCoord: pixelCoord,
+                            idealPixelCoord: lastDisplayed.idealPixelCoord - inverseNoTicks
+                        };
+                    } else {
+                        tick = null;
+                    }
+                }
+
+                if (tick) {
+                    ticks.push(tick);
+                }
+            }
+            // Since we went in backwards order.
+            ticks.reverse();
+        } else {
+            var tickSize = plot.computeTickSize(min, max, noTicks),
+                customAxis = {min: min, max: max, tickSize: tickSize};
+            ticks = $.plot.linearTickGenerator(customAxis);
+        }
+
+        return ticks;
+    };
+
+    var clampAxis = function (axis, plot) {
+        var min = axis.min,
+            max = axis.max;
+
+        if (min <= 0) {
+            //for empty graph if axis.min is not strictly positive make it 0.1
+            if (axis.datamin === null) {
+                min = axis.min = 0.1;
+            } else {
+                min = processAxisOffset(plot, axis);
+            }
+
+            if (max < min) {
+                axis.max = axis.datamax !== null ? axis.datamax : axis.options.max;
+                axis.options.offset.below = 0;
+                axis.options.offset.above = 0;
+            }
+        }
+
+        return min;
+    }
+
+    /**
+    - logTickFormatter(value, axis, precision)
+
+    This is the corresponding tickFormatter of the logaxis.
+    For a number greater that 10^6 or smaller than 10^(-3), this will be drawn
+    with e representation
+    */
+    var logTickFormatter = function (value, axis, precision) {
+        var tenExponent = value > 0 ? Math.floor(Math.log(value) / Math.LN10) : 0;
+
+        if (precision) {
+            if ((tenExponent >= -4) && (tenExponent <= 7)) {
+                return $.plot.defaultTickFormatter(value, axis, precision);
+            } else {
+                return $.plot.expRepTickFormatter(value, axis, precision);
+            }
+        }
+        if ((tenExponent >= -4) && (tenExponent <= 7)) {
+            //if we have float numbers, return a limited length string(ex: 0.0009 is represented as 0.000900001)
+            var formattedValue = tenExponent < 0 ? value.toFixed(-tenExponent) : value.toFixed(tenExponent + 2);
+            if (formattedValue.indexOf('.') !== -1) {
+                var lastZero = formattedValue.lastIndexOf('0');
+
+                while (lastZero === formattedValue.length - 1) {
+                    formattedValue = formattedValue.slice(0, -1);
+                    lastZero = formattedValue.lastIndexOf('0');
+                }
+
+                //delete the dot if is last
+                if (formattedValue.indexOf('.') === formattedValue.length - 1) {
+                    formattedValue = formattedValue.slice(0, -1);
+                }
+            }
+            return formattedValue;
+        } else {
+            return $.plot.expRepTickFormatter(value, axis);
+        }
+    };
+
+    /*logaxis caracteristic functions*/
+    var logTransform = function (v) {
+        if (v < PREFERRED_LOG_TICK_VALUES[0]) {
+            v = PREFERRED_LOG_TICK_VALUES[0];
+        }
+
+        return Math.log(v);
+    };
+
+    var logInverseTransform = function (v) {
+        return Math.exp(v);
+    };
+
+    var invertedTransform = function (v) {
+        return -v;
+    }
+
+    var invertedLogTransform = function (v) {
+        return -logTransform(v);
+    }
+
+    var invertedLogInverseTransform = function (v) {
+        return logInverseTransform(-v);
+    }
+
+    /**
+    - setDataminRange(plot, axis)
+
+    It is used for clamping the starting point of a logarithmic axis.
+    This will set the axis datamin range to 0.1 or to the first datapoint greater then 0.
+    The function is usefull since the logarithmic representation can not show
+    values less than or equal to 0.
+    */
+    function setDataminRange(plot, axis) {
+        if (axis.options.mode === 'log' && axis.datamin <= 0) {
+            if (axis.datamin === null) {
+                axis.datamin = 0.1;
+            } else {
+                axis.datamin = processAxisOffset(plot, axis);
+            }
+        }
+    }
+
+    function processAxisOffset(plot, axis) {
+        var series = plot.getData(),
+            range = series
+                .filter(function(series) {
+                    return series.xaxis === axis || series.yaxis === axis;
+                })
+                .map(function(series) {
+                    return plot.computeRangeForDataSeries(series, null, isValid);
+                }),
+            min = axis.direction === 'x' 
+            ? Math.min(0.1, range && range[0] ? range[0].xmin : 0.1) 
+            : Math.min(0.1, range && range[0] ? range[0].ymin : 0.1);
+
+        axis.min = min;
+
+        return min;
+    }
+
+    function isValid(a) {
+        return a > 0;
+    }
+
+    function init(plot) {
+        plot.hooks.processOptions.push(function (plot) {
+            $.each(plot.getAxes(), function (axisName, axis) {
+                var opts = axis.options;
+                if (opts.mode === 'log') {
+                    axis.tickGenerator = function (axis) {
+                        var noTicks = 11;
+                        return logTickGenerator(plot, axis, noTicks);
+                    };
+                    if (typeof axis.options.tickFormatter !== 'function') {
+                        axis.options.tickFormatter = logTickFormatter;
+                    }
+                    axis.options.transform = opts.inverted ? invertedLogTransform : logTransform;
+                    axis.options.inverseTransform = opts.inverted ? invertedLogInverseTransform : logInverseTransform;
+                    axis.options.autoScaleMargin = 0;
+                    plot.hooks.setRange.push(setDataminRange);
+                } else if (opts.inverted) {
+                    axis.options.transform = invertedTransform;
+                    axis.options.inverseTransform = invertedTransform;
+                }
+            });
+        });
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'log',
+        version: '0.1'
+    });
+
+    $.plot.logTicksGenerator = logTickGenerator;
+    $.plot.logTickFormatter = logTickFormatter;
+})(jQuery);

frontend/lib/flot/jquery.flot.navigate.js

@@ -0,0 +1,798 @@
+/* Flot plugin for adding the ability to pan and zoom the plot.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Copyright (c) 2016 Ciprian Ceteras.
+Copyright (c) 2017 Raluca Portase.
+Licensed under the MIT license.
+
+*/
+
+/**
+## jquery.flot.navigate.js
+
+This flot plugin is used for adding the ability to pan and zoom the plot.
+A higher level overview is available at [interactions](interactions.md) documentation.
+
+The default behaviour is scrollwheel up/down to zoom in, drag
+to pan. The plugin defines plot.zoom({ center }), plot.zoomOut() and
+plot.pan( offset ) so you easily can add custom controls. It also fires
+"plotpan" and "plotzoom" events, useful for synchronizing plots.
+
+The plugin supports these options:
+```js
+    zoom: {
+        interactive: false,
+        active: false,
+        amount: 1.5         // 2 = 200% (zoom in), 0.5 = 50% (zoom out)
+    }
+
+    pan: {
+        interactive: false,
+        active: false,
+        cursor: "move",     // CSS mouse cursor value used when dragging, e.g. "pointer"
+        frameRate: 60,
+        mode: "smart"       // enable smart pan mode
+    }
+
+    xaxis: {
+        axisZoom: true, //zoom axis when mouse over it is allowed
+        plotZoom: true, //zoom axis is allowed for plot zoom
+        axisPan: true, //pan axis when mouse over it is allowed
+        plotPan: true //pan axis is allowed for plot pan
+    }
+
+    yaxis: {
+        axisZoom: true, //zoom axis when mouse over it is allowed
+        plotZoom: true, //zoom axis is allowed for plot zoom
+        axisPan: true, //pan axis when mouse over it is allowed
+        plotPan: true //pan axis is allowed for plot pan
+    }
+```
+**interactive** enables the built-in drag/click behaviour. If you enable
+interactive for pan, then you'll have a basic plot that supports moving
+around; the same for zoom.
+
+**active** is true after a touch tap on plot. This enables plot navigation.
+Once activated, zoom and pan cannot be deactivated. When the plot becomes active,
+"plotactivated" event is triggered.
+
+**amount** specifies the default amount to zoom in (so 1.5 = 150%) relative to
+the current viewport.
+
+**cursor** is a standard CSS mouse cursor string used for visual feedback to the
+user when dragging.
+
+**frameRate** specifies the maximum number of times per second the plot will
+update itself while the user is panning around on it (set to null to disable
+intermediate pans, the plot will then not update until the mouse button is
+released).
+
+**mode** a string specifies the pan mode for mouse interaction. Accepted values:
+'manual': no pan hint or direction snapping;
+'smart': The graph shows pan hint bar and the pan movement will snap
+to one direction when the drag direction is close to it;
+'smartLock'. The graph shows pan hint bar and the pan movement will always
+snap to a direction that the drag diorection started with.
+
+Example API usage:
+```js
+    plot = $.plot(...);
+
+    // zoom default amount in on the pixel ( 10, 20 )
+    plot.zoom({ center: { left: 10, top: 20 } });
+
+    // zoom out again
+    plot.zoomOut({ center: { left: 10, top: 20 } });
+
+    // zoom 200% in on the pixel (10, 20)
+    plot.zoom({ amount: 2, center: { left: 10, top: 20 } });
+
+    // pan 100 pixels to the left (changing x-range in a positive way) and 20 down
+    plot.pan({ left: -100, top: 20 })
+```
+
+Here, "center" specifies where the center of the zooming should happen. Note
+that this is defined in pixel space, not the space of the data points (you can
+use the p2c helpers on the axes in Flot to help you convert between these).
+
+**amount** is the amount to zoom the viewport relative to the current range, so
+1 is 100% (i.e. no change), 1.5 is 150% (zoom in), 0.7 is 70% (zoom out). You
+can set the default in the options.
+*/
+
+/* eslint-enable */
+(function($) {
+    'use strict';
+
+    var options = {
+        zoom: {
+            interactive: false,
+            active: false,
+            amount: 1.5 // how much to zoom relative to current position, 2 = 200% (zoom in), 0.5 = 50% (zoom out)
+        },
+        pan: {
+            interactive: false,
+            active: false,
+            cursor: "move",
+            frameRate: 60,
+            mode: 'smart'
+        },
+        recenter: {
+            interactive: true
+        },
+        xaxis: {
+            axisZoom: true, //zoom axis when mouse over it is allowed
+            plotZoom: true, //zoom axis is allowed for plot zoom
+            axisPan: true, //pan axis when mouse over it is allowed
+            plotPan: true //pan axis is allowed for plot pan
+        },
+        yaxis: {
+            axisZoom: true,
+            plotZoom: true,
+            axisPan: true,
+            plotPan: true
+        }
+    };
+
+    var saturated = $.plot.saturated;
+    var browser = $.plot.browser;
+    var SNAPPING_CONSTANT = $.plot.uiConstants.SNAPPING_CONSTANT;
+    var PANHINT_LENGTH_CONSTANT = $.plot.uiConstants.PANHINT_LENGTH_CONSTANT;
+
+    function init(plot) {
+        plot.hooks.processOptions.push(initNevigation);
+    }
+
+    function initNevigation(plot, options) {
+        var panAxes = null;
+        var canDrag = false;
+        var useManualPan = options.pan.mode === 'manual',
+            smartPanLock = options.pan.mode === 'smartLock',
+            useSmartPan = smartPanLock || options.pan.mode === 'smart';
+
+        function onZoomClick(e, zoomOut, amount) {
+            var page = browser.getPageXY(e);
+
+            var c = plot.offset();
+            c.left = page.X - c.left;
+            c.top = page.Y - c.top;
+
+            var ec = plot.getPlaceholder().offset();
+            ec.left = page.X - ec.left;
+            ec.top = page.Y - ec.top;
+
+            var axes = plot.getXAxes().concat(plot.getYAxes()).filter(function (axis) {
+                var box = axis.box;
+                if (box !== undefined) {
+                    return (ec.left > box.left) && (ec.left < box.left + box.width) &&
+                        (ec.top > box.top) && (ec.top < box.top + box.height);
+                }
+            });
+
+            if (axes.length === 0) {
+                axes = undefined;
+            }
+
+            if (zoomOut) {
+                plot.zoomOut({
+                    center: c,
+                    axes: axes,
+                    amount: amount
+                });
+            } else {
+                plot.zoom({
+                    center: c,
+                    axes: axes,
+                    amount: amount
+                });
+            }
+        }
+
+        var prevCursor = 'default',
+            panHint = null,
+            panTimeout = null,
+            plotState,
+            prevDragPosition = { x: 0, y: 0 },
+            isPanAction = false;
+
+        function onMouseWheel(e, delta) {
+            var maxAbsoluteDeltaOnMac = 1,
+                isMacScroll = Math.abs(e.originalEvent.deltaY) <= maxAbsoluteDeltaOnMac,
+                defaultNonMacScrollAmount = null,
+                macMagicRatio = 50,
+                amount = isMacScroll ? 1 + Math.abs(e.originalEvent.deltaY) / macMagicRatio : defaultNonMacScrollAmount;
+
+            if (isPanAction) {
+                onDragEnd(e);
+            }
+
+            if (plot.getOptions().zoom.active) {
+                e.preventDefault();
+                onZoomClick(e, delta < 0, amount);
+                return false;
+            }
+        }
+
+        plot.navigationState = function(startPageX, startPageY) {
+            var axes = this.getAxes();
+            var result = {};
+            Object.keys(axes).forEach(function(axisName) {
+                var axis = axes[axisName];
+                result[axisName] = {
+                    navigationOffset: { below: axis.options.offset.below || 0,
+                        above: axis.options.offset.above || 0},
+                    axisMin: axis.min,
+                    axisMax: axis.max,
+                    diagMode: false
+                }
+            });
+
+            result.startPageX = startPageX || 0;
+            result.startPageY = startPageY || 0;
+            return result;
+        }
+
+        function onMouseDown(e) {
+            canDrag = true;
+        }
+
+        function onMouseUp(e) {
+            canDrag = false;
+        }
+
+        function isLeftMouseButtonPressed(e) {
+            return e.button === 0;
+        }
+
+        function onDragStart(e) {
+            if (!canDrag || !isLeftMouseButtonPressed(e)) {
+                return false;
+            }
+
+            isPanAction = true;
+            var page = browser.getPageXY(e);
+
+            var ec = plot.getPlaceholder().offset();
+            ec.left = page.X - ec.left;
+            ec.top = page.Y - ec.top;
+
+            panAxes = plot.getXAxes().concat(plot.getYAxes()).filter(function (axis) {
+                var box = axis.box;
+                if (box !== undefined) {
+                    return (ec.left > box.left) && (ec.left < box.left + box.width) &&
+                        (ec.top > box.top) && (ec.top < box.top + box.height);
+                }
+            });
+
+            if (panAxes.length === 0) {
+                panAxes = undefined;
+            }
+
+            var c = plot.getPlaceholder().css('cursor');
+            if (c) {
+                prevCursor = c;
+            }
+
+            plot.getPlaceholder().css('cursor', plot.getOptions().pan.cursor);
+
+            if (useSmartPan) {
+                plotState = plot.navigationState(page.X, page.Y);
+            } else if (useManualPan) {
+                prevDragPosition.x = page.X;
+                prevDragPosition.y = page.Y;
+            }
+        }
+        
+        function onDrag(e) {
+            if (!isPanAction) { 
+                return; 
+            }
+
+            var page = browser.getPageXY(e);
+            var frameRate = plot.getOptions().pan.frameRate;
+
+            if (frameRate === -1) {
+                if (useSmartPan) {
+                    plot.smartPan({
+                        x: plotState.startPageX - page.X,
+                        y: plotState.startPageY - page.Y
+                    }, plotState, panAxes, false, smartPanLock);
+                } else if (useManualPan) {
+                    plot.pan({
+                        left: prevDragPosition.x - page.X,
+                        top: prevDragPosition.y - page.Y,
+                        axes: panAxes
+                    });
+                    prevDragPosition.x = page.X;
+                    prevDragPosition.y = page.Y;
+                }
+                return;
+            }
+
+            if (panTimeout || !frameRate) return;
+
+            panTimeout = setTimeout(function() {
+                if (useSmartPan) {
+                    plot.smartPan({
+                        x: plotState.startPageX - page.X,
+                        y: plotState.startPageY - page.Y
+                    }, plotState, panAxes, false, smartPanLock);
+                } else if (useManualPan) {
+                    plot.pan({
+                        left: prevDragPosition.x - page.X,
+                        top: prevDragPosition.y - page.Y,
+                        axes: panAxes
+                    });
+                    prevDragPosition.x = page.X;
+                    prevDragPosition.y = page.Y;
+                }
+
+                panTimeout = null;
+            }, 1 / frameRate * 1000);
+        }
+
+        function onDragEnd(e) {
+            if (!isPanAction) { 
+                return; 
+            }
+
+            if (panTimeout) {
+                clearTimeout(panTimeout);
+                panTimeout = null;
+            }
+
+            isPanAction = false;
+            var page = browser.getPageXY(e);
+
+            plot.getPlaceholder().css('cursor', prevCursor);
+
+            if (useSmartPan) {
+                plot.smartPan({
+                    x: plotState.startPageX - page.X,
+                    y: plotState.startPageY - page.Y
+                }, plotState, panAxes, false, smartPanLock);
+                plot.smartPan.end();
+            } else if (useManualPan) {
+                plot.pan({
+                    left: prevDragPosition.x - page.X,
+                    top: prevDragPosition.y - page.Y,
+                    axes: panAxes
+                });
+                prevDragPosition.x = 0;
+                prevDragPosition.y = 0;
+            }
+        }
+
+        function onDblClick(e) {
+            plot.activate();
+            var o = plot.getOptions()
+
+            if (!o.recenter.interactive) { return; }
+
+            var axes = plot.getTouchedAxis(e.clientX, e.clientY),
+                event;
+
+            plot.recenter({ axes: axes[0] ? axes : null });
+
+            if (axes[0]) {
+                event = new $.Event('re-center', { detail: {
+                    axisTouched: axes[0]
+                }});
+            } else {
+                event = new $.Event('re-center', { detail: e });
+            }
+            plot.getPlaceholder().trigger(event);
+        }
+
+        function onClick(e) {
+            plot.activate();
+
+            if (isPanAction) {
+                onDragEnd(e);
+            }
+
+            return false;
+        }
+
+        plot.activate = function() {
+            var o = plot.getOptions();
+            if (!o.pan.active || !o.zoom.active) {
+                o.pan.active = true;
+                o.zoom.active = true;
+                plot.getPlaceholder().trigger("plotactivated", [plot]);
+            }
+        }
+
+        function bindEvents(plot, eventHolder) {
+            var o = plot.getOptions();
+            if (o.zoom.interactive) {
+                eventHolder.mousewheel(onMouseWheel);
+            }
+
+            if (o.pan.interactive) {
+                plot.addEventHandler("dragstart", onDragStart, eventHolder, 0);
+                plot.addEventHandler("drag", onDrag, eventHolder, 0);
+                plot.addEventHandler("dragend", onDragEnd, eventHolder, 0);
+                eventHolder.bind("mousedown", onMouseDown);
+                eventHolder.bind("mouseup", onMouseUp);
+            }
+
+            eventHolder.dblclick(onDblClick);
+            eventHolder.click(onClick);
+        }
+
+        plot.zoomOut = function(args) {
+            if (!args) {
+                args = {};
+            }
+
+            if (!args.amount) {
+                args.amount = plot.getOptions().zoom.amount;
+            }
+
+            args.amount = 1 / args.amount;
+            plot.zoom(args);
+        };
+
+        plot.zoom = function(args) {
+            if (!args) {
+                args = {};
+            }
+
+            var c = args.center,
+                amount = args.amount || plot.getOptions().zoom.amount,
+                w = plot.width(),
+                h = plot.height(),
+                axes = args.axes || plot.getAxes();
+
+            if (!c) {
+                c = {
+                    left: w / 2,
+                    top: h / 2
+                };
+            }
+
+            var xf = c.left / w,
+                yf = c.top / h,
+                minmax = {
+                    x: {
+                        min: c.left - xf * w / amount,
+                        max: c.left + (1 - xf) * w / amount
+                    },
+                    y: {
+                        min: c.top - yf * h / amount,
+                        max: c.top + (1 - yf) * h / amount
+                    }
+                };
+
+            for (var key in axes) {
+                if (!axes.hasOwnProperty(key)) {
+                    continue;
+                }
+
+                var axis = axes[key],
+                    opts = axis.options,
+                    min = minmax[axis.direction].min,
+                    max = minmax[axis.direction].max,
+                    navigationOffset = axis.options.offset;
+
+                //skip axis without axisZoom when zooming only on certain axis or axis without plotZoom for zoom on entire plot
+                if ((!opts.axisZoom && args.axes) || (!args.axes && !opts.plotZoom)) {
+                    continue;
+                }
+
+                min = $.plot.saturated.saturate(axis.c2p(min));
+                max = $.plot.saturated.saturate(axis.c2p(max));
+                if (min > max) {
+                    // make sure min < max
+                    var tmp = min;
+                    min = max;
+                    max = tmp;
+                }
+
+                var offsetBelow = $.plot.saturated.saturate(navigationOffset.below - (axis.min - min));
+                var offsetAbove = $.plot.saturated.saturate(navigationOffset.above - (axis.max - max));
+                opts.offset = { below: offsetBelow, above: offsetAbove };
+            };
+
+            plot.setupGrid(true);
+            plot.draw();
+
+            if (!args.preventEvent) {
+                plot.getPlaceholder().trigger("plotzoom", [plot, args]);
+            }
+        };
+
+        plot.pan = function(args) {
+            var delta = {
+                x: +args.left,
+                y: +args.top
+            };
+
+            if (isNaN(delta.x)) delta.x = 0;
+            if (isNaN(delta.y)) delta.y = 0;
+
+            $.each(args.axes || plot.getAxes(), function(_, axis) {
+                var opts = axis.options,
+                    d = delta[axis.direction];
+
+                //skip axis without axisPan when panning only on certain axis or axis without plotPan for pan the entire plot
+                if ((!opts.axisPan && args.axes) || (!opts.plotPan && !args.axes)) {
+                    return;
+                }
+
+                if (d !== 0) {
+                    var navigationOffsetBelow = saturated.saturate(axis.c2p(axis.p2c(axis.min) + d) - axis.c2p(axis.p2c(axis.min))),
+                        navigationOffsetAbove = saturated.saturate(axis.c2p(axis.p2c(axis.max) + d) - axis.c2p(axis.p2c(axis.max)));
+
+                    if (!isFinite(navigationOffsetBelow)) {
+                        navigationOffsetBelow = 0;
+                    }
+
+                    if (!isFinite(navigationOffsetAbove)) {
+                        navigationOffsetAbove = 0;
+                    }
+
+                    opts.offset = {
+                        below: saturated.saturate(navigationOffsetBelow + (opts.offset.below || 0)),
+                        above: saturated.saturate(navigationOffsetAbove + (opts.offset.above || 0))
+                    };
+                }
+            });
+
+            plot.setupGrid(true);
+            plot.draw();
+            if (!args.preventEvent) {
+                plot.getPlaceholder().trigger("plotpan", [plot, args]);
+            }
+        };
+
+        plot.recenter = function(args) {
+            $.each(args.axes || plot.getAxes(), function(_, axis) {
+                if (args.axes) {
+                    if (this.direction === 'x') {
+                        axis.options.offset = { below: 0 };
+                    } else if (this.direction === 'y') {
+                        axis.options.offset = { above: 0 };
+                    }
+                } else {
+                    axis.options.offset = { below: 0, above: 0 };
+                }
+            });
+            plot.setupGrid(true);
+            plot.draw();
+        };
+
+        var shouldSnap = function(delta) {
+            return (Math.abs(delta.y) < SNAPPING_CONSTANT && Math.abs(delta.x) >= SNAPPING_CONSTANT) ||
+                (Math.abs(delta.x) < SNAPPING_CONSTANT && Math.abs(delta.y) >= SNAPPING_CONSTANT);
+        }
+
+        // adjust delta so the pan action is constrained on the vertical or horizontal direction
+        // it the movements in the other direction are small
+        var adjustDeltaToSnap = function(delta) {
+            if (Math.abs(delta.x) < SNAPPING_CONSTANT && Math.abs(delta.y) >= SNAPPING_CONSTANT) {
+                return {x: 0, y: delta.y};
+            }
+
+            if (Math.abs(delta.y) < SNAPPING_CONSTANT && Math.abs(delta.x) >= SNAPPING_CONSTANT) {
+                return {x: delta.x, y: 0};
+            }
+
+            return delta;
+        }
+
+        var lockedDirection = null;
+        var lockDeltaDirection = function(delta) {
+            if (!lockedDirection && Math.max(Math.abs(delta.x), Math.abs(delta.y)) >= SNAPPING_CONSTANT) {
+                lockedDirection = Math.abs(delta.x) < Math.abs(delta.y) ? 'y' : 'x';
+            }
+
+            switch (lockedDirection) {
+                case 'x':
+                    return { x: delta.x, y: 0 };
+                case 'y':
+                    return { x: 0, y: delta.y };
+                default:
+                    return { x: 0, y: 0 };
+            }
+        }
+
+        var isDiagonalMode = function(delta) {
+            if (Math.abs(delta.x) > 0 && Math.abs(delta.y) > 0) {
+                return true;
+            }
+            return false;
+        }
+
+        var restoreAxisOffset = function(axes, initialState, delta) {
+            var axis;
+            Object.keys(axes).forEach(function(axisName) {
+                axis = axes[axisName];
+                if (delta[axis.direction] === 0) {
+                    axis.options.offset.below = initialState[axisName].navigationOffset.below;
+                    axis.options.offset.above = initialState[axisName].navigationOffset.above;
+                }
+            });
+        }
+
+        var prevDelta = { x: 0, y: 0 };
+        plot.smartPan = function(delta, initialState, panAxes, preventEvent, smartLock) {
+            var snap = smartLock ? true : shouldSnap(delta),
+                axes = plot.getAxes(),
+                opts;
+            delta = smartLock ? lockDeltaDirection(delta) : adjustDeltaToSnap(delta);
+
+            if (isDiagonalMode(delta)) {
+                initialState.diagMode = true;
+            }
+
+            if (snap && initialState.diagMode === true) {
+                initialState.diagMode = false;
+                restoreAxisOffset(axes, initialState, delta);
+            }
+
+            if (snap) {
+                panHint = {
+                    start: {
+                        x: initialState.startPageX - plot.offset().left + plot.getPlotOffset().left,
+                        y: initialState.startPageY - plot.offset().top + plot.getPlotOffset().top
+                    },
+                    end: {
+                        x: initialState.startPageX - delta.x - plot.offset().left + plot.getPlotOffset().left,
+                        y: initialState.startPageY - delta.y - plot.offset().top + plot.getPlotOffset().top
+                    }
+                }
+            } else {
+                panHint = {
+                    start: {
+                        x: initialState.startPageX - plot.offset().left + plot.getPlotOffset().left,
+                        y: initialState.startPageY - plot.offset().top + plot.getPlotOffset().top
+                    },
+                    end: false
+                }
+            }
+
+            if (isNaN(delta.x)) delta.x = 0;
+            if (isNaN(delta.y)) delta.y = 0;
+
+            if (panAxes) {
+                axes = panAxes;
+            }
+
+            var axis, axisMin, axisMax, p, d;
+            Object.keys(axes).forEach(function(axisName) {
+                axis = axes[axisName];
+                axisMin = axis.min;
+                axisMax = axis.max;
+                opts = axis.options;
+
+                d = delta[axis.direction];
+                p = prevDelta[axis.direction];
+
+                //skip axis without axisPan when panning only on certain axis or axis without plotPan for pan the entire plot
+                if ((!opts.axisPan && panAxes) || (!panAxes && !opts.plotPan)) {
+                    return;
+                }
+
+                if (d !== 0) {
+                    var navigationOffsetBelow = saturated.saturate(axis.c2p(axis.p2c(axisMin) - (p - d)) - axis.c2p(axis.p2c(axisMin))),
+                        navigationOffsetAbove = saturated.saturate(axis.c2p(axis.p2c(axisMax) - (p - d)) - axis.c2p(axis.p2c(axisMax)));
+
+                    if (!isFinite(navigationOffsetBelow)) {
+                        navigationOffsetBelow = 0;
+                    }
+
+                    if (!isFinite(navigationOffsetAbove)) {
+                        navigationOffsetAbove = 0;
+                    }
+
+                    axis.options.offset.below = saturated.saturate(navigationOffsetBelow + (axis.options.offset.below || 0));
+                    axis.options.offset.above = saturated.saturate(navigationOffsetAbove + (axis.options.offset.above || 0));
+                }
+            });
+
+            prevDelta = delta;
+            plot.setupGrid(true);
+            plot.draw();
+
+            if (!preventEvent) {
+                plot.getPlaceholder().trigger("plotpan", [plot, delta, panAxes, initialState]);
+            }
+        };
+
+        plot.smartPan.end = function() {
+            panHint = null;
+            lockedDirection = null;
+            prevDelta = { x: 0, y: 0 };
+            plot.triggerRedrawOverlay();
+        }
+
+        function shutdown(plot, eventHolder) {
+            eventHolder.unbind("mousewheel", onMouseWheel);
+            eventHolder.unbind("mousedown", onMouseDown);
+            eventHolder.unbind("mouseup", onMouseUp);
+            eventHolder.unbind("dragstart", onDragStart);
+            eventHolder.unbind("drag", onDrag);
+            eventHolder.unbind("dragend", onDragEnd);
+            eventHolder.unbind("dblclick", onDblClick);
+            eventHolder.unbind("click", onClick);
+
+            if (panTimeout) clearTimeout(panTimeout);
+        }
+
+        function drawOverlay(plot, ctx) {
+            if (panHint) {
+                ctx.strokeStyle = 'rgba(96, 160, 208, 0.7)';
+                ctx.lineWidth = 2;
+                ctx.lineJoin = "round";
+                var startx = Math.round(panHint.start.x),
+                    starty = Math.round(panHint.start.y),
+                    endx, endy;
+
+                if (panAxes) {
+                    if (panAxes[0].direction === 'x') {
+                        endy = Math.round(panHint.start.y);
+                        endx = Math.round(panHint.end.x);
+                    } else if (panAxes[0].direction === 'y') {
+                        endx = Math.round(panHint.start.x);
+                        endy = Math.round(panHint.end.y);
+                    }
+                } else {
+                    endx = Math.round(panHint.end.x);
+                    endy = Math.round(panHint.end.y);
+                }
+
+                ctx.beginPath();
+
+                if (panHint.end === false) {
+                    ctx.moveTo(startx, starty - PANHINT_LENGTH_CONSTANT);
+                    ctx.lineTo(startx, starty + PANHINT_LENGTH_CONSTANT);
+
+                    ctx.moveTo(startx + PANHINT_LENGTH_CONSTANT, starty);
+                    ctx.lineTo(startx - PANHINT_LENGTH_CONSTANT, starty);
+                } else {
+                    var dirX = starty === endy;
+
+                    ctx.moveTo(startx - (dirX ? 0 : PANHINT_LENGTH_CONSTANT), starty - (dirX ? PANHINT_LENGTH_CONSTANT : 0));
+                    ctx.lineTo(startx + (dirX ? 0 : PANHINT_LENGTH_CONSTANT), starty + (dirX ? PANHINT_LENGTH_CONSTANT : 0));
+
+                    ctx.moveTo(startx, starty);
+                    ctx.lineTo(endx, endy);
+
+                    ctx.moveTo(endx - (dirX ? 0 : PANHINT_LENGTH_CONSTANT), endy - (dirX ? PANHINT_LENGTH_CONSTANT : 0));
+                    ctx.lineTo(endx + (dirX ? 0 : PANHINT_LENGTH_CONSTANT), endy + (dirX ? PANHINT_LENGTH_CONSTANT : 0));
+                }
+
+                ctx.stroke();
+            }
+        }
+
+        plot.getTouchedAxis = function(touchPointX, touchPointY) {
+            var ec = plot.getPlaceholder().offset();
+            ec.left = touchPointX - ec.left;
+            ec.top = touchPointY - ec.top;
+
+            var axis = plot.getXAxes().concat(plot.getYAxes()).filter(function (axis) {
+                var box = axis.box;
+                if (box !== undefined) {
+                    return (ec.left > box.left) && (ec.left < box.left + box.width) &&
+                            (ec.top > box.top) && (ec.top < box.top + box.height);
+                }
+            });
+
+            return axis;
+        }
+
+        plot.hooks.drawOverlay.push(drawOverlay);
+        plot.hooks.bindEvents.push(bindEvents);
+        plot.hooks.shutdown.push(shutdown);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'navigate',
+        version: '1.3'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.pie.js

@@ -0,0 +1,786 @@
+/* Flot plugin for rendering pie charts.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The plugin assumes that each series has a single data value, and that each
+value is a positive integer or zero.  Negative numbers don't make sense for a
+pie chart, and have unpredictable results.  The values do NOT need to be
+passed in as percentages; the plugin will calculate the total and per-slice
+percentages internally.
+
+* Created by Brian Medendorp
+
+* Updated with contributions from btburnett3, Anthony Aragues and Xavi Ivars
+
+The plugin supports these options:
+
+    series: {
+        pie: {
+            show: true/false
+            radius: 0-1 for percentage of fullsize, or a specified pixel length, or 'auto'
+            innerRadius: 0-1 for percentage of fullsize or a specified pixel length, for creating a donut effect
+            startAngle: 0-2 factor of PI used for starting angle (in radians) i.e 3/2 starts at the top, 0 and 2 have the same result
+            tilt: 0-1 for percentage to tilt the pie, where 1 is no tilt, and 0 is completely flat (nothing will show)
+            offset: {
+                top: integer value to move the pie up or down
+                left: integer value to move the pie left or right, or 'auto'
+            },
+            stroke: {
+                color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#FFF')
+                width: integer pixel width of the stroke
+            },
+            label: {
+                show: true/false, or 'auto'
+                formatter:  a user-defined function that modifies the text/style of the label text
+                radius: 0-1 for percentage of fullsize, or a specified pixel length
+                background: {
+                    color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#000')
+                    opacity: 0-1
+                },
+                threshold: 0-1 for the percentage value at which to hide labels (if they're too small)
+            },
+            combine: {
+                threshold: 0-1 for the percentage value at which to combine slices (if they're too small)
+                color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#CCC'), if null, the plugin will automatically use the color of the first slice to be combined
+                label: any text value of what the combined slice should be labeled
+            }
+            highlight: {
+                opacity: 0-1
+            }
+        }
+    }
+
+More detail and specific examples can be found in the included HTML file.
+
+*/
+
+(function($) {
+    // Maximum redraw attempts when fitting labels within the plot
+
+    var REDRAW_ATTEMPTS = 10;
+
+    // Factor by which to shrink the pie when fitting labels within the plot
+
+    var REDRAW_SHRINK = 0.95;
+
+    function init(plot) {
+        var canvas = null,
+            target = null,
+            options = null,
+            maxRadius = null,
+            centerLeft = null,
+            centerTop = null,
+            processed = false,
+            ctx = null;
+
+        // interactive variables
+
+        var highlights = [];
+
+        // add hook to determine if pie plugin in enabled, and then perform necessary operations
+
+        plot.hooks.processOptions.push(function(plot, options) {
+            if (options.series.pie.show) {
+                options.grid.show = false;
+
+                // set labels.show
+
+                if (options.series.pie.label.show === "auto") {
+                    if (options.legend.show) {
+                        options.series.pie.label.show = false;
+                    } else {
+                        options.series.pie.label.show = true;
+                    }
+                }
+
+                // set radius
+
+                if (options.series.pie.radius === "auto") {
+                    if (options.series.pie.label.show) {
+                        options.series.pie.radius = 3 / 4;
+                    } else {
+                        options.series.pie.radius = 1;
+                    }
+                }
+
+                // ensure sane tilt
+
+                if (options.series.pie.tilt > 1) {
+                    options.series.pie.tilt = 1;
+                } else if (options.series.pie.tilt < 0) {
+                    options.series.pie.tilt = 0;
+                }
+            }
+        });
+
+        plot.hooks.bindEvents.push(function(plot, eventHolder) {
+            var options = plot.getOptions();
+            if (options.series.pie.show) {
+                if (options.grid.hoverable) {
+                    eventHolder.unbind("mousemove").mousemove(onMouseMove);
+                }
+                if (options.grid.clickable) {
+                    eventHolder.unbind("click").click(onClick);
+                }
+            }
+        });
+
+        plot.hooks.processDatapoints.push(function(plot, series, data, datapoints) {
+            var options = plot.getOptions();
+            if (options.series.pie.show) {
+                processDatapoints(plot, series, data, datapoints);
+            }
+        });
+
+        plot.hooks.drawOverlay.push(function(plot, octx) {
+            var options = plot.getOptions();
+            if (options.series.pie.show) {
+                drawOverlay(plot, octx);
+            }
+        });
+
+        plot.hooks.draw.push(function(plot, newCtx) {
+            var options = plot.getOptions();
+            if (options.series.pie.show) {
+                draw(plot, newCtx);
+            }
+        });
+
+        function processDatapoints(plot, series, datapoints) {
+            if (!processed) {
+                processed = true;
+                canvas = plot.getCanvas();
+                target = $(canvas).parent();
+                options = plot.getOptions();
+                plot.setData(combine(plot.getData()));
+            }
+        }
+
+        function combine(data) {
+            var total = 0,
+                combined = 0,
+                numCombined = 0,
+                color = options.series.pie.combine.color,
+                newdata = [],
+                i,
+                value;
+
+            // Fix up the raw data from Flot, ensuring the data is numeric
+
+            for (i = 0; i < data.length; ++i) {
+                value = data[i].data;
+
+                // If the data is an array, we'll assume that it's a standard
+                // Flot x-y pair, and are concerned only with the second value.
+
+                // Note how we use the original array, rather than creating a
+                // new one; this is more efficient and preserves any extra data
+                // that the user may have stored in higher indexes.
+
+                if ($.isArray(value) && value.length === 1) {
+                    value = value[0];
+                }
+
+                if ($.isArray(value)) {
+                    // Equivalent to $.isNumeric() but compatible with jQuery < 1.7
+                    if (!isNaN(parseFloat(value[1])) && isFinite(value[1])) {
+                        value[1] = +value[1];
+                    } else {
+                        value[1] = 0;
+                    }
+                } else if (!isNaN(parseFloat(value)) && isFinite(value)) {
+                    value = [1, +value];
+                } else {
+                    value = [1, 0];
+                }
+
+                data[i].data = [value];
+            }
+
+            // Sum up all the slices, so we can calculate percentages for each
+
+            for (i = 0; i < data.length; ++i) {
+                total += data[i].data[0][1];
+            }
+
+            // Count the number of slices with percentages below the combine
+            // threshold; if it turns out to be just one, we won't combine.
+
+            for (i = 0; i < data.length; ++i) {
+                value = data[i].data[0][1];
+                if (value / total <= options.series.pie.combine.threshold) {
+                    combined += value;
+                    numCombined++;
+                    if (!color) {
+                        color = data[i].color;
+                    }
+                }
+            }
+
+            for (i = 0; i < data.length; ++i) {
+                value = data[i].data[0][1];
+                if (numCombined < 2 || value / total > options.series.pie.combine.threshold) {
+                    newdata.push(
+                        $.extend(data[i], {     /* extend to allow keeping all other original data values
+                                                   and using them e.g. in labelFormatter. */
+                            data: [[1, value]],
+                            color: data[i].color,
+                            label: data[i].label,
+                            angle: value * Math.PI * 2 / total,
+                            percent: value / (total / 100)
+                        })
+                    );
+                }
+            }
+
+            if (numCombined > 1) {
+                newdata.push({
+                    data: [[1, combined]],
+                    color: color,
+                    label: options.series.pie.combine.label,
+                    angle: combined * Math.PI * 2 / total,
+                    percent: combined / (total / 100)
+                });
+            }
+
+            return newdata;
+        }
+
+        function draw(plot, newCtx) {
+            if (!target) {
+                return; // if no series were passed
+            }
+
+            var canvasWidth = plot.getPlaceholder().width(),
+                canvasHeight = plot.getPlaceholder().height(),
+                legendWidth = target.children().filter(".legend").children().width() || 0;
+
+            ctx = newCtx;
+
+            // WARNING: HACK! REWRITE THIS CODE AS SOON AS POSSIBLE!
+
+            // When combining smaller slices into an 'other' slice, we need to
+            // add a new series.  Since Flot gives plugins no way to modify the
+            // list of series, the pie plugin uses a hack where the first call
+            // to processDatapoints results in a call to setData with the new
+            // list of series, then subsequent processDatapoints do nothing.
+
+            // The plugin-global 'processed' flag is used to control this hack;
+            // it starts out false, and is set to true after the first call to
+            // processDatapoints.
+
+            // Unfortunately this turns future setData calls into no-ops; they
+            // call processDatapoints, the flag is true, and nothing happens.
+
+            // To fix this we'll set the flag back to false here in draw, when
+            // all series have been processed, so the next sequence of calls to
+            // processDatapoints once again starts out with a slice-combine.
+            // This is really a hack; in 0.9 we need to give plugins a proper
+            // way to modify series before any processing begins.
+
+            processed = false;
+
+            // calculate maximum radius and center point
+            maxRadius = Math.min(canvasWidth, canvasHeight / options.series.pie.tilt) / 2;
+            centerTop = canvasHeight / 2 + options.series.pie.offset.top;
+            centerLeft = canvasWidth / 2;
+
+            if (options.series.pie.offset.left === "auto") {
+                if (options.legend.position.match("w")) {
+                    centerLeft += legendWidth / 2;
+                } else {
+                    centerLeft -= legendWidth / 2;
+                }
+                if (centerLeft < maxRadius) {
+                    centerLeft = maxRadius;
+                } else if (centerLeft > canvasWidth - maxRadius) {
+                    centerLeft = canvasWidth - maxRadius;
+                }
+            } else {
+                centerLeft += options.series.pie.offset.left;
+            }
+
+            var slices = plot.getData(),
+                attempts = 0;
+
+            // Keep shrinking the pie's radius until drawPie returns true,
+            // indicating that all the labels fit, or we try too many times.
+            do {
+                if (attempts > 0) {
+                    maxRadius *= REDRAW_SHRINK;
+                }
+                attempts += 1;
+                clear();
+                if (options.series.pie.tilt <= 0.8) {
+                    drawShadow();
+                }
+            } while (!drawPie() && attempts < REDRAW_ATTEMPTS)
+
+            if (attempts >= REDRAW_ATTEMPTS) {
+                clear();
+                target.prepend("<div class='error'>Could not draw pie with labels contained inside canvas</div>");
+            }
+
+            if (plot.setSeries && plot.insertLegend) {
+                plot.setSeries(slices);
+                plot.insertLegend();
+            }
+
+            // we're actually done at this point, just defining internal functions at this point
+            function clear() {
+                ctx.clearRect(0, 0, canvasWidth, canvasHeight);
+                target.children().filter(".pieLabel, .pieLabelBackground").remove();
+            }
+
+            function drawShadow() {
+                var shadowLeft = options.series.pie.shadow.left;
+                var shadowTop = options.series.pie.shadow.top;
+                var edge = 10;
+                var alpha = options.series.pie.shadow.alpha;
+                var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius;
+
+                if (radius >= canvasWidth / 2 - shadowLeft || radius * options.series.pie.tilt >= canvasHeight / 2 - shadowTop || radius <= edge) {
+                    return;    // shadow would be outside canvas, so don't draw it
+                }
+
+                ctx.save();
+                ctx.translate(shadowLeft, shadowTop);
+                ctx.globalAlpha = alpha;
+                ctx.fillStyle = "#000";
+
+                // center and rotate to starting position
+                ctx.translate(centerLeft, centerTop);
+                ctx.scale(1, options.series.pie.tilt);
+
+                //radius -= edge;
+                for (var i = 1; i <= edge; i++) {
+                    ctx.beginPath();
+                    ctx.arc(0, 0, radius, 0, Math.PI * 2, false);
+                    ctx.fill();
+                    radius -= i;
+                }
+
+                ctx.restore();
+            }
+
+            function drawPie() {
+                var startAngle = Math.PI * options.series.pie.startAngle;
+                var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius;
+                var i;
+                // center and rotate to starting position
+
+                ctx.save();
+                ctx.translate(centerLeft, centerTop);
+                ctx.scale(1, options.series.pie.tilt);
+                //ctx.rotate(startAngle); // start at top; -- This doesn't work properly in Opera
+
+                // draw slices
+                ctx.save();
+
+                var currentAngle = startAngle;
+                for (i = 0; i < slices.length; ++i) {
+                    slices[i].startAngle = currentAngle;
+                    drawSlice(slices[i].angle, slices[i].color, true);
+                }
+
+                ctx.restore();
+
+                // draw slice outlines
+                if (options.series.pie.stroke.width > 0) {
+                    ctx.save();
+                    ctx.lineWidth = options.series.pie.stroke.width;
+                    currentAngle = startAngle;
+                    for (i = 0; i < slices.length; ++i) {
+                        drawSlice(slices[i].angle, options.series.pie.stroke.color, false);
+                    }
+
+                    ctx.restore();
+                }
+
+                // draw donut hole
+                drawDonutHole(ctx);
+
+                ctx.restore();
+
+                // Draw the labels, returning true if they fit within the plot
+                if (options.series.pie.label.show) {
+                    return drawLabels();
+                } else return true;
+
+                function drawSlice(angle, color, fill) {
+                    if (angle <= 0 || isNaN(angle)) {
+                        return;
+                    }
+
+                    if (fill) {
+                        ctx.fillStyle = color;
+                    } else {
+                        ctx.strokeStyle = color;
+                        ctx.lineJoin = "round";
+                    }
+
+                    ctx.beginPath();
+                    if (Math.abs(angle - Math.PI * 2) > 0.000000001) {
+                        ctx.moveTo(0, 0); // Center of the pie
+                    }
+
+                    //ctx.arc(0, 0, radius, 0, angle, false); // This doesn't work properly in Opera
+                    ctx.arc(0, 0, radius, currentAngle, currentAngle + angle / 2, false);
+                    ctx.arc(0, 0, radius, currentAngle + angle / 2, currentAngle + angle, false);
+                    ctx.closePath();
+                    //ctx.rotate(angle); // This doesn't work properly in Opera
+                    currentAngle += angle;
+
+                    if (fill) {
+                        ctx.fill();
+                    } else {
+                        ctx.stroke();
+                    }
+                }
+
+                function drawLabels() {
+                    var currentAngle = startAngle;
+                    var radius = options.series.pie.label.radius > 1 ? options.series.pie.label.radius : maxRadius * options.series.pie.label.radius;
+
+                    for (var i = 0; i < slices.length; ++i) {
+                        if (slices[i].percent >= options.series.pie.label.threshold * 100) {
+                            if (!drawLabel(slices[i], currentAngle, i)) {
+                                return false;
+                            }
+                        }
+                        currentAngle += slices[i].angle;
+                    }
+
+                    return true;
+
+                    function drawLabel(slice, startAngle, index) {
+                        if (slice.data[0][1] === 0) {
+                            return true;
+                        }
+
+                        // format label text
+                        var lf = options.legend.labelFormatter, text, plf = options.series.pie.label.formatter;
+
+                        if (lf) {
+                            text = lf(slice.label, slice);
+                        } else {
+                            text = slice.label;
+                        }
+
+                        if (plf) {
+                            text = plf(text, slice);
+                        }
+
+                        var halfAngle = ((startAngle + slice.angle) + startAngle) / 2;
+                        var x = centerLeft + Math.round(Math.cos(halfAngle) * radius);
+                        var y = centerTop + Math.round(Math.sin(halfAngle) * radius) * options.series.pie.tilt;
+
+                        var html = "<span class='pieLabel' id='pieLabel" + index + "' style='position:absolute;top:" + y + "px;left:" + x + "px;'>" + text + "</span>";
+                        target.append(html);
+
+                        var label = target.children("#pieLabel" + index);
+                        var labelTop = (y - label.height() / 2);
+                        var labelLeft = (x - label.width() / 2);
+
+                        label.css("top", labelTop);
+                        label.css("left", labelLeft);
+
+                        // check to make sure that the label is not outside the canvas
+                        if (0 - labelTop > 0 || 0 - labelLeft > 0 || canvasHeight - (labelTop + label.height()) < 0 || canvasWidth - (labelLeft + label.width()) < 0) {
+                            return false;
+                        }
+
+                        if (options.series.pie.label.background.opacity !== 0) {
+                            // put in the transparent background separately to avoid blended labels and label boxes
+                            var c = options.series.pie.label.background.color;
+                            if (c == null) {
+                                c = slice.color;
+                            }
+
+                            var pos = "top:" + labelTop + "px;left:" + labelLeft + "px;";
+                            $("<div class='pieLabelBackground' style='position:absolute;width:" + label.width() + "px;height:" + label.height() + "px;" + pos + "background-color:" + c + ";'></div>")
+                                .css("opacity", options.series.pie.label.background.opacity)
+                                .insertBefore(label);
+                        }
+
+                        return true;
+                    } // end individual label function
+                } // end drawLabels function
+            } // end drawPie function
+        } // end draw function
+
+        // Placed here because it needs to be accessed from multiple locations
+
+        function drawDonutHole(layer) {
+            if (options.series.pie.innerRadius > 0) {
+                // subtract the center
+                layer.save();
+                var innerRadius = options.series.pie.innerRadius > 1 ? options.series.pie.innerRadius : maxRadius * options.series.pie.innerRadius;
+                layer.globalCompositeOperation = "destination-out"; // this does not work with excanvas, but it will fall back to using the stroke color
+                layer.beginPath();
+                layer.fillStyle = options.series.pie.stroke.color;
+                layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false);
+                layer.fill();
+                layer.closePath();
+                layer.restore();
+
+                // add inner stroke
+                layer.save();
+                layer.beginPath();
+                layer.strokeStyle = options.series.pie.stroke.color;
+                layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false);
+                layer.stroke();
+                layer.closePath();
+                layer.restore();
+
+                // TODO: add extra shadow inside hole (with a mask) if the pie is tilted.
+            }
+        }
+
+        //-- Additional Interactive related functions --
+
+        function isPointInPoly(poly, pt) {
+            for (var c = false, i = -1, l = poly.length, j = l - 1; ++i < l; j = i) {
+                ((poly[i][1] <= pt[1] && pt[1] < poly[j][1]) ||
+                (poly[j][1] <= pt[1] && pt[1] < poly[i][1])) &&
+                (pt[0] < (poly[j][0] - poly[i][0]) * (pt[1] - poly[i][1]) / (poly[j][1] - poly[i][1]) + poly[i][0]) &&
+                (c = !c);
+            }
+            return c;
+        }
+
+        function findNearbySlice(mouseX, mouseY) {
+            var slices = plot.getData(),
+                options = plot.getOptions(),
+                radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius,
+                x, y;
+
+            for (var i = 0; i < slices.length; ++i) {
+                var s = slices[i];
+                if (s.pie.show) {
+                    ctx.save();
+                    ctx.beginPath();
+                    ctx.moveTo(0, 0); // Center of the pie
+                    //ctx.scale(1, options.series.pie.tilt);    // this actually seems to break everything when here.
+                    ctx.arc(0, 0, radius, s.startAngle, s.startAngle + s.angle / 2, false);
+                    ctx.arc(0, 0, radius, s.startAngle + s.angle / 2, s.startAngle + s.angle, false);
+                    ctx.closePath();
+                    x = mouseX - centerLeft;
+                    y = mouseY - centerTop;
+
+                    if (ctx.isPointInPath) {
+                        if (ctx.isPointInPath(mouseX - centerLeft, mouseY - centerTop)) {
+                            ctx.restore();
+                            return {
+                                datapoint: [s.percent, s.data],
+                                dataIndex: 0,
+                                series: s,
+                                seriesIndex: i
+                            };
+                        }
+                    } else {
+                        // excanvas for IE doesn;t support isPointInPath, this is a workaround.
+                        var p1X = radius * Math.cos(s.startAngle),
+                            p1Y = radius * Math.sin(s.startAngle),
+                            p2X = radius * Math.cos(s.startAngle + s.angle / 4),
+                            p2Y = radius * Math.sin(s.startAngle + s.angle / 4),
+                            p3X = radius * Math.cos(s.startAngle + s.angle / 2),
+                            p3Y = radius * Math.sin(s.startAngle + s.angle / 2),
+                            p4X = radius * Math.cos(s.startAngle + s.angle / 1.5),
+                            p4Y = radius * Math.sin(s.startAngle + s.angle / 1.5),
+                            p5X = radius * Math.cos(s.startAngle + s.angle),
+                            p5Y = radius * Math.sin(s.startAngle + s.angle),
+                            arrPoly = [[0, 0], [p1X, p1Y], [p2X, p2Y], [p3X, p3Y], [p4X, p4Y], [p5X, p5Y]],
+                            arrPoint = [x, y];
+
+                        // TODO: perhaps do some mathmatical trickery here with the Y-coordinate to compensate for pie tilt?
+
+                        if (isPointInPoly(arrPoly, arrPoint)) {
+                            ctx.restore();
+                            return {
+                                datapoint: [s.percent, s.data],
+                                dataIndex: 0,
+                                series: s,
+                                seriesIndex: i
+                            };
+                        }
+                    }
+
+                    ctx.restore();
+                }
+            }
+
+            return null;
+        }
+
+        function onMouseMove(e) {
+            triggerClickHoverEvent("plothover", e);
+        }
+
+        function onClick(e) {
+            triggerClickHoverEvent("plotclick", e);
+        }
+
+        // trigger click or hover event (they send the same parameters so we share their code)
+
+        function triggerClickHoverEvent(eventname, e) {
+            var offset = plot.offset();
+            var canvasX = parseInt(e.pageX - offset.left);
+            var canvasY = parseInt(e.pageY - offset.top);
+            var item = findNearbySlice(canvasX, canvasY);
+
+            if (options.grid.autoHighlight) {
+                // clear auto-highlights
+                for (var i = 0; i < highlights.length; ++i) {
+                    var h = highlights[i];
+                    if (h.auto === eventname && !(item && h.series === item.series)) {
+                        unhighlight(h.series);
+                    }
+                }
+            }
+
+            // highlight the slice
+
+            if (item) {
+                highlight(item.series, eventname);
+            }
+
+            // trigger any hover bind events
+
+            var pos = { pageX: e.pageX, pageY: e.pageY };
+            target.trigger(eventname, [pos, item]);
+        }
+
+        function highlight(s, auto) {
+            //if (typeof s == "number") {
+            //    s = series[s];
+            //}
+
+            var i = indexOfHighlight(s);
+
+            if (i === -1) {
+                highlights.push({ series: s, auto: auto });
+                plot.triggerRedrawOverlay();
+            } else if (!auto) {
+                highlights[i].auto = false;
+            }
+        }
+
+        function unhighlight(s) {
+            if (s == null) {
+                highlights = [];
+                plot.triggerRedrawOverlay();
+            }
+
+            //if (typeof s == "number") {
+            //    s = series[s];
+            //}
+
+            var i = indexOfHighlight(s);
+
+            if (i !== -1) {
+                highlights.splice(i, 1);
+                plot.triggerRedrawOverlay();
+            }
+        }
+
+        function indexOfHighlight(s) {
+            for (var i = 0; i < highlights.length; ++i) {
+                var h = highlights[i];
+                if (h.series === s) {
+                    return i;
+                }
+            }
+            return -1;
+        }
+
+        function drawOverlay(plot, octx) {
+            var options = plot.getOptions();
+            var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius;
+
+            octx.save();
+            octx.translate(centerLeft, centerTop);
+            octx.scale(1, options.series.pie.tilt);
+
+            for (var i = 0; i < highlights.length; ++i) {
+                drawHighlight(highlights[i].series);
+            }
+
+            drawDonutHole(octx);
+
+            octx.restore();
+
+            function drawHighlight(series) {
+                if (series.angle <= 0 || isNaN(series.angle)) {
+                    return;
+                }
+
+                //octx.fillStyle = parseColor(options.series.pie.highlight.color).scale(null, null, null, options.series.pie.highlight.opacity).toString();
+                octx.fillStyle = "rgba(255, 255, 255, " + options.series.pie.highlight.opacity + ")"; // this is temporary until we have access to parseColor
+                octx.beginPath();
+                if (Math.abs(series.angle - Math.PI * 2) > 0.000000001) {
+                    octx.moveTo(0, 0); // Center of the pie
+                }
+                octx.arc(0, 0, radius, series.startAngle, series.startAngle + series.angle / 2, false);
+                octx.arc(0, 0, radius, series.startAngle + series.angle / 2, series.startAngle + series.angle, false);
+                octx.closePath();
+                octx.fill();
+            }
+        }
+    } // end init (plugin body)
+
+    // define pie specific options and their default values
+    var options = {
+        series: {
+            pie: {
+                show: false,
+                radius: "auto",    // actual radius of the visible pie (based on full calculated radius if <=1, or hard pixel value)
+                innerRadius: 0, /* for donut */
+                startAngle: 3 / 2,
+                tilt: 1,
+                shadow: {
+                    left: 5,    // shadow left offset
+                    top: 15,    // shadow top offset
+                    alpha: 0.02    // shadow alpha
+                },
+                offset: {
+                    top: 0,
+                    left: "auto"
+                },
+                stroke: {
+                    color: "#fff",
+                    width: 1
+                },
+                label: {
+                    show: "auto",
+                    formatter: function(label, slice) {
+                        return "<div style='font-size:x-small;text-align:center;padding:2px;color:" + slice.color + ";'>" + label + "<br/>" + Math.round(slice.percent) + "%</div>";
+                    },    // formatter function
+                    radius: 1,    // radius at which to place the labels (based on full calculated radius if <=1, or hard pixel value)
+                    background: {
+                        color: null,
+                        opacity: 0
+                    },
+                    threshold: 0    // percentage at which to hide the label (i.e. the slice is too narrow)
+                },
+                combine: {
+                    threshold: -1,    // percentage at which to combine little slices into one larger slice
+                    color: null,    // color to give the new slice (auto-generated if null)
+                    label: "Other"    // label to give the new slice
+                },
+                highlight: {
+                    //color: "#fff",        // will add this functionality once parseColor is available
+                    opacity: 0.5
+                }
+            }
+        }
+    };
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: "pie",
+        version: "1.1"
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.resize.js

@@ -0,0 +1,60 @@
+/* eslint-disable */
+/* Flot plugin for automatically redrawing plots as the placeholder resizes.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+It works by listening for changes on the placeholder div (through the jQuery
+resize event plugin) - if the size changes, it will redraw the plot.
+
+There are no options. If you need to disable the plugin for some plots, you
+can just fix the size of their placeholders.
+
+*/
+
+/* Inline dependency:
+ * jQuery resize event - v1.1 - 3/14/2010
+ * http://benalman.com/projects/jquery-resize-plugin/
+ *
+ * Copyright (c) 2010 "Cowboy" Ben Alman
+ * Dual licensed under the MIT and GPL licenses.
+ * http://benalman.com/about/license/
+ */
+(function($,e,t){"$:nomunge";var i=[],n=$.resize=$.extend($.resize,{}),a,r=false,s="setTimeout",u="resize",m=u+"-special-event",o="pendingDelay",l="activeDelay",f="throttleWindow";n[o]=200;n[l]=20;n[f]=true;$.event.special[u]={setup:function(){if(!n[f]&&this[s]){return false}var e=$(this);i.push(this);e.data(m,{w:e.width(),h:e.height()});if(i.length===1){a=t;h()}},teardown:function(){if(!n[f]&&this[s]){return false}var e=$(this);for(var t=i.length-1;t>=0;t--){if(i[t]==this){i.splice(t,1);break}}e.removeData(m);if(!i.length){if(r){cancelAnimationFrame(a)}else{clearTimeout(a)}a=null}},add:function(e){if(!n[f]&&this[s]){return false}var i;function a(e,n,a){var r=$(this),s=r.data(m)||{};s.w=n!==t?n:r.width();s.h=a!==t?a:r.height();i.apply(this,arguments)}if($.isFunction(e)){i=e;return a}else{i=e.handler;e.handler=a}}};function h(t){if(r===true){r=t||1}for(var s=i.length-1;s>=0;s--){var l=$(i[s]);if(l[0]==e||l.is(":visible")){var f=l.width(),c=l.height(),d=l.data(m);if(d&&(f!==d.w||c!==d.h)){l.trigger(u,[d.w=f,d.h=c]);r=t||true}}else{d=l.data(m);d.w=0;d.h=0}}if(a!==null){if(r&&(t==null||t-r<1e3)){a=e.requestAnimationFrame(h)}else{a=setTimeout(h,n[o]);r=false}}}if(!e.requestAnimationFrame){e.requestAnimationFrame=function(){return e.webkitRequestAnimationFrame||e.mozRequestAnimationFrame||e.oRequestAnimationFrame||e.msRequestAnimationFrame||function(t,i){return e.setTimeout(function(){t((new Date).getTime())},n[l])}}()}if(!e.cancelAnimationFrame){e.cancelAnimationFrame=function(){return e.webkitCancelRequestAnimationFrame||e.mozCancelRequestAnimationFrame||e.oCancelRequestAnimationFrame||e.msCancelRequestAnimationFrame||clearTimeout}()}})(jQuery,this);
+
+/* eslint-enable */
+(function ($) {
+    var options = { }; // no options
+
+    function init(plot) {
+        function onResize() {
+            var placeholder = plot.getPlaceholder();
+
+            // somebody might have hidden us and we can't plot
+            // when we don't have the dimensions
+            if (placeholder.width() === 0 || placeholder.height() === 0) return;
+
+            plot.resize();
+            plot.setupGrid();
+            plot.draw();
+        }
+
+        function bindEvents(plot, eventHolder) {
+            plot.getPlaceholder().resize(onResize);
+        }
+
+        function shutdown(plot, eventHolder) {
+            plot.getPlaceholder().unbind("resize", onResize);
+        }
+
+        plot.hooks.bindEvents.push(bindEvents);
+        plot.hooks.shutdown.push(shutdown);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'resize',
+        version: '1.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.saturated.js

@@ -0,0 +1,43 @@
+(function ($) {
+    'use strict';
+    var saturated = {
+        saturate: function (a) {
+            if (a === Infinity) {
+                return Number.MAX_VALUE;
+            }
+
+            if (a === -Infinity) {
+                return -Number.MAX_VALUE;
+            }
+
+            return a;
+        },
+        delta: function(min, max, noTicks) {
+            return ((max - min) / noTicks) === Infinity ? (max / noTicks - min / noTicks) : (max - min) / noTicks
+        },
+        multiply: function (a, b) {
+            return saturated.saturate(a * b);
+        },
+        // returns c * bInt * a. Beahves properly in the case where c is negative
+        // and bInt * a is bigger that Number.MAX_VALUE (Infinity)
+        multiplyAdd: function (a, bInt, c) {
+            if (isFinite(a * bInt)) {
+                return saturated.saturate(a * bInt + c);
+            } else {
+                var result = c;
+
+                for (var i = 0; i < bInt; i++) {
+                    result += a;
+                }
+
+                return saturated.saturate(result);
+            }
+        },
+        // round to nearby lower multiple of base
+        floorInBase: function(n, base) {
+            return base * Math.floor(n / base);
+        }
+    };
+
+    $.plot.saturated = saturated;
+})(jQuery);

frontend/lib/flot/jquery.flot.selection.js

@@ -0,0 +1,517 @@
+/* Flot plugin for selecting regions of a plot.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The plugin supports these options:
+
+selection: {
+    mode: null or "x" or "y" or "xy" or "smart",
+    color: color,
+    shape: "round" or "miter" or "bevel",
+    visualization: "fill" or "focus",
+    minSize: number of pixels
+}
+
+Selection support is enabled by setting the mode to one of "x", "y" or "xy".
+In "x" mode, the user will only be able to specify the x range, similarly for
+"y" mode. For "xy", the selection becomes a rectangle where both ranges can be
+specified. "color" is color of the selection (if you need to change the color
+later on, you can get to it with plot.getOptions().selection.color). "shape"
+is the shape of the corners of the selection.
+
+The way how the selection is visualized, can be changed by using the option
+"visualization". Flot currently supports two modes: "focus" and "fill". The
+option "focus" draws a colored bezel around the selected area while keeping
+the selected area clear. The option "fill" highlights (i.e., fills) the
+selected area with a colored highlight.
+
+"minSize" is the minimum size a selection can be in pixels. This value can
+be customized to determine the smallest size a selection can be and still
+have the selection rectangle be displayed. When customizing this value, the
+fact that it refers to pixels, not axis units must be taken into account.
+Thus, for example, if there is a bar graph in time mode with BarWidth set to 1
+minute, setting "minSize" to 1 will not make the minimum selection size 1
+minute, but rather 1 pixel. Note also that setting "minSize" to 0 will prevent
+"plotunselected" events from being fired when the user clicks the mouse without
+dragging.
+
+When selection support is enabled, a "plotselected" event will be emitted on
+the DOM element you passed into the plot function. The event handler gets a
+parameter with the ranges selected on the axes, like this:
+
+    placeholder.bind( "plotselected", function( event, ranges ) {
+        alert("You selected " + ranges.xaxis.from + " to " + ranges.xaxis.to)
+        // similar for yaxis - with multiple axes, the extra ones are in
+        // x2axis, x3axis, ...
+    });
+
+The "plotselected" event is only fired when the user has finished making the
+selection. A "plotselecting" event is fired during the process with the same
+parameters as the "plotselected" event, in case you want to know what's
+happening while it's happening,
+
+A "plotunselected" event with no arguments is emitted when the user clicks the
+mouse to remove the selection. As stated above, setting "minSize" to 0 will
+destroy this behavior.
+
+The plugin allso adds the following methods to the plot object:
+
+- setSelection( ranges, preventEvent )
+
+  Set the selection rectangle. The passed in ranges is on the same form as
+  returned in the "plotselected" event. If the selection mode is "x", you
+  should put in either an xaxis range, if the mode is "y" you need to put in
+  an yaxis range and both xaxis and yaxis if the selection mode is "xy", like
+  this:
+
+    setSelection({ xaxis: { from: 0, to: 10 }, yaxis: { from: 40, to: 60 } });
+
+  setSelection will trigger the "plotselected" event when called. If you don't
+  want that to happen, e.g. if you're inside a "plotselected" handler, pass
+  true as the second parameter. If you are using multiple axes, you can
+  specify the ranges on any of those, e.g. as x2axis/x3axis/... instead of
+  xaxis, the plugin picks the first one it sees.
+
+- clearSelection( preventEvent )
+
+  Clear the selection rectangle. Pass in true to avoid getting a
+  "plotunselected" event.
+
+- getSelection()
+
+  Returns the current selection in the same format as the "plotselected"
+  event. If there's currently no selection, the function returns null.
+
+*/
+
+(function ($) {
+    function init(plot) {
+        var selection = {
+            first: {x: -1, y: -1},
+            second: {x: -1, y: -1},
+            show: false,
+            currentMode: 'xy',
+            active: false
+        };
+
+        var SNAPPING_CONSTANT = $.plot.uiConstants.SNAPPING_CONSTANT;
+
+        // FIXME: The drag handling implemented here should be
+        // abstracted out, there's some similar code from a library in
+        // the navigation plugin, this should be massaged a bit to fit
+        // the Flot cases here better and reused. Doing this would
+        // make this plugin much slimmer.
+        var savedhandlers = {};
+
+        function onDrag(e) {
+            if (selection.active) {
+                updateSelection(e);
+
+                plot.getPlaceholder().trigger("plotselecting", [ getSelection() ]);
+            }
+        }
+
+        function onDragStart(e) {
+            var o = plot.getOptions();
+            // only accept left-click
+            if (e.which !== 1 || o.selection.mode === null) return;
+
+            // reinitialize currentMode
+            selection.currentMode = 'xy';
+
+            // cancel out any text selections
+            document.body.focus();
+
+            // prevent text selection and drag in old-school browsers
+            if (document.onselectstart !== undefined && savedhandlers.onselectstart == null) {
+                savedhandlers.onselectstart = document.onselectstart;
+                document.onselectstart = function () { return false; };
+            }
+            if (document.ondrag !== undefined && savedhandlers.ondrag == null) {
+                savedhandlers.ondrag = document.ondrag;
+                document.ondrag = function () { return false; };
+            }
+
+            setSelectionPos(selection.first, e);
+
+            selection.active = true;
+        }
+
+        function onDragEnd(e) {
+            // revert drag stuff for old-school browsers
+            if (document.onselectstart !== undefined) {
+                document.onselectstart = savedhandlers.onselectstart;
+            }
+
+            if (document.ondrag !== undefined) {
+                document.ondrag = savedhandlers.ondrag;
+            }
+
+            // no more dragging
+            selection.active = false;
+            updateSelection(e);
+
+            if (selectionIsSane()) {
+                triggerSelectedEvent();
+            } else {
+                // this counts as a clear
+                plot.getPlaceholder().trigger("plotunselected", [ ]);
+                plot.getPlaceholder().trigger("plotselecting", [ null ]);
+            }
+
+            return false;
+        }
+
+        function getSelection() {
+            if (!selectionIsSane()) return null;
+
+            if (!selection.show) return null;
+
+            var r = {},
+                c1 = {x: selection.first.x, y: selection.first.y},
+                c2 = {x: selection.second.x, y: selection.second.y};
+
+            if (selectionDirection(plot) === 'x') {
+                c1.y = 0;
+                c2.y = plot.height();
+            }
+
+            if (selectionDirection(plot) === 'y') {
+                c1.x = 0;
+                c2.x = plot.width();
+            }
+
+            $.each(plot.getAxes(), function (name, axis) {
+                if (axis.used) {
+                    var p1 = axis.c2p(c1[axis.direction]), p2 = axis.c2p(c2[axis.direction]);
+                    r[name] = { from: Math.min(p1, p2), to: Math.max(p1, p2) };
+                }
+            });
+            return r;
+        }
+
+        function triggerSelectedEvent() {
+            var r = getSelection();
+
+            plot.getPlaceholder().trigger("plotselected", [ r ]);
+
+            // backwards-compat stuff, to be removed in future
+            if (r.xaxis && r.yaxis) {
+                plot.getPlaceholder().trigger("selected", [ { x1: r.xaxis.from, y1: r.yaxis.from, x2: r.xaxis.to, y2: r.yaxis.to } ]);
+            }
+        }
+
+        function clamp(min, value, max) {
+            return value < min ? min : (value > max ? max : value);
+        }
+
+        function selectionDirection(plot) {
+            var o = plot.getOptions();
+
+            if (o.selection.mode === 'smart') {
+                return selection.currentMode;
+            } else {
+                return o.selection.mode;
+            }
+        }
+
+        function updateMode(pos) {
+            if (selection.first) {
+                var delta = {
+                    x: pos.x - selection.first.x,
+                    y: pos.y - selection.first.y
+                };
+
+                if (Math.abs(delta.x) < SNAPPING_CONSTANT) {
+                    selection.currentMode = 'y';
+                } else if (Math.abs(delta.y) < SNAPPING_CONSTANT) {
+                    selection.currentMode = 'x';
+                } else {
+                    selection.currentMode = 'xy';
+                }
+            }
+        }
+
+        function setSelectionPos(pos, e) {
+            var offset = plot.getPlaceholder().offset();
+            var plotOffset = plot.getPlotOffset();
+            pos.x = clamp(0, e.pageX - offset.left - plotOffset.left, plot.width());
+            pos.y = clamp(0, e.pageY - offset.top - plotOffset.top, plot.height());
+
+            if (pos !== selection.first) updateMode(pos);
+
+            if (selectionDirection(plot) === "y") {
+                pos.x = pos === selection.first ? 0 : plot.width();
+            }
+
+            if (selectionDirection(plot) === "x") {
+                pos.y = pos === selection.first ? 0 : plot.height();
+            }
+        }
+
+        function updateSelection(pos) {
+            if (pos.pageX == null) return;
+
+            setSelectionPos(selection.second, pos);
+            if (selectionIsSane()) {
+                selection.show = true;
+                plot.triggerRedrawOverlay();
+            } else clearSelection(true);
+        }
+
+        function clearSelection(preventEvent) {
+            if (selection.show) {
+                selection.show = false;
+                selection.currentMode = '';
+                plot.triggerRedrawOverlay();
+                if (!preventEvent) {
+                    plot.getPlaceholder().trigger("plotunselected", [ ]);
+                }
+            }
+        }
+
+        // function taken from markings support in Flot
+        function extractRange(ranges, coord) {
+            var axis, from, to, key, axes = plot.getAxes();
+
+            for (var k in axes) {
+                axis = axes[k];
+                if (axis.direction === coord) {
+                    key = coord + axis.n + "axis";
+                    if (!ranges[key] && axis.n === 1) {
+                        // support x1axis as xaxis
+                        key = coord + "axis";
+                    }
+
+                    if (ranges[key]) {
+                        from = ranges[key].from;
+                        to = ranges[key].to;
+                        break;
+                    }
+                }
+            }
+
+            // backwards-compat stuff - to be removed in future
+            if (!ranges[key]) {
+                axis = coord === "x" ? plot.getXAxes()[0] : plot.getYAxes()[0];
+                from = ranges[coord + "1"];
+                to = ranges[coord + "2"];
+            }
+
+            // auto-reverse as an added bonus
+            if (from != null && to != null && from > to) {
+                var tmp = from;
+                from = to;
+                to = tmp;
+            }
+
+            return { from: from, to: to, axis: axis };
+        }
+
+        function setSelection(ranges, preventEvent) {
+            var range;
+
+            if (selectionDirection(plot) === "y") {
+                selection.first.x = 0;
+                selection.second.x = plot.width();
+            } else {
+                range = extractRange(ranges, "x");
+                selection.first.x = range.axis.p2c(range.from);
+                selection.second.x = range.axis.p2c(range.to);
+            }
+
+            if (selectionDirection(plot) === "x") {
+                selection.first.y = 0;
+                selection.second.y = plot.height();
+            } else {
+                range = extractRange(ranges, "y");
+                selection.first.y = range.axis.p2c(range.from);
+                selection.second.y = range.axis.p2c(range.to);
+            }
+
+            selection.show = true;
+            plot.triggerRedrawOverlay();
+            if (!preventEvent && selectionIsSane()) {
+                triggerSelectedEvent();
+            }
+        }
+
+        function selectionIsSane() {
+            var minSize = plot.getOptions().selection.minSize;
+            return Math.abs(selection.second.x - selection.first.x) >= minSize &&
+                Math.abs(selection.second.y - selection.first.y) >= minSize;
+        }
+
+        plot.clearSelection = clearSelection;
+        plot.setSelection = setSelection;
+        plot.getSelection = getSelection;
+
+        plot.hooks.bindEvents.push(function(plot, eventHolder) {
+            var o = plot.getOptions();
+            if (o.selection.mode != null) {
+                plot.addEventHandler("dragstart", onDragStart, eventHolder, 0);
+                plot.addEventHandler("drag", onDrag, eventHolder, 0);
+                plot.addEventHandler("dragend", onDragEnd, eventHolder, 0);
+            }
+        });
+
+        function drawSelectionDecorations(ctx, x, y, w, h, oX, oY, mode) {
+            var spacing = 3;
+            var fullEarWidth = 15;
+            var earWidth = Math.max(0, Math.min(fullEarWidth, w / 2 - 2, h / 2 - 2));
+            ctx.fillStyle = '#ffffff';
+
+            if (mode === 'xy') {
+                ctx.beginPath();
+                ctx.moveTo(x, y + earWidth);
+                ctx.lineTo(x - 3, y + earWidth);
+                ctx.lineTo(x - 3, y - 3);
+                ctx.lineTo(x + earWidth, y - 3);
+                ctx.lineTo(x + earWidth, y);
+                ctx.lineTo(x, y);
+                ctx.closePath();
+
+                ctx.moveTo(x, y + h - earWidth);
+                ctx.lineTo(x - 3, y + h - earWidth);
+                ctx.lineTo(x - 3, y + h + 3);
+                ctx.lineTo(x + earWidth, y + h + 3);
+                ctx.lineTo(x + earWidth, y + h);
+                ctx.lineTo(x, y + h);
+                ctx.closePath();
+
+                ctx.moveTo(x + w, y + earWidth);
+                ctx.lineTo(x + w + 3, y + earWidth);
+                ctx.lineTo(x + w + 3, y - 3);
+                ctx.lineTo(x + w - earWidth, y - 3);
+                ctx.lineTo(x + w - earWidth, y);
+                ctx.lineTo(x + w, y);
+                ctx.closePath();
+
+                ctx.moveTo(x + w, y + h - earWidth);
+                ctx.lineTo(x + w + 3, y + h - earWidth);
+                ctx.lineTo(x + w + 3, y + h + 3);
+                ctx.lineTo(x + w - earWidth, y + h + 3);
+                ctx.lineTo(x + w - earWidth, y + h);
+                ctx.lineTo(x + w, y + h);
+                ctx.closePath();
+
+                ctx.stroke();
+                ctx.fill();
+            }
+
+            x = oX;
+            y = oY;
+
+            if (mode === 'x') {
+                ctx.beginPath();
+                ctx.moveTo(x, y + fullEarWidth);
+                ctx.lineTo(x, y - fullEarWidth);
+                ctx.lineTo(x - spacing, y - fullEarWidth);
+                ctx.lineTo(x - spacing, y + fullEarWidth);
+                ctx.closePath();
+
+                ctx.moveTo(x + w, y + fullEarWidth);
+                ctx.lineTo(x + w, y - fullEarWidth);
+                ctx.lineTo(x + w + spacing, y - fullEarWidth);
+                ctx.lineTo(x + w + spacing, y + fullEarWidth);
+                ctx.closePath();
+                ctx.stroke();
+                ctx.fill();
+            }
+
+            if (mode === 'y') {
+                ctx.beginPath();
+
+                ctx.moveTo(x - fullEarWidth, y);
+                ctx.lineTo(x + fullEarWidth, y);
+                ctx.lineTo(x + fullEarWidth, y - spacing);
+                ctx.lineTo(x - fullEarWidth, y - spacing);
+                ctx.closePath();
+
+                ctx.moveTo(x - fullEarWidth, y + h);
+                ctx.lineTo(x + fullEarWidth, y + h);
+                ctx.lineTo(x + fullEarWidth, y + h + spacing);
+                ctx.lineTo(x - fullEarWidth, y + h + spacing);
+                ctx.closePath();
+                ctx.stroke();
+                ctx.fill();
+            }
+        }
+
+        plot.hooks.drawOverlay.push(function (plot, ctx) {
+            // draw selection
+            if (selection.show && selectionIsSane()) {
+                var plotOffset = plot.getPlotOffset();
+                var o = plot.getOptions();
+
+                ctx.save();
+                ctx.translate(plotOffset.left, plotOffset.top);
+
+                var c = $.color.parse(o.selection.color);
+                var visualization = o.selection.visualization;
+
+                var scalingFactor = 1;
+
+                // use a dimmer scaling factor if visualization is "fill"
+                if (visualization === "fill") {
+                    scalingFactor = 0.8;
+                }
+
+                ctx.strokeStyle = c.scale('a', scalingFactor).toString();
+                ctx.lineWidth = 1;
+                ctx.lineJoin = o.selection.shape;
+                ctx.fillStyle = c.scale('a', 0.4).toString();
+
+                var x = Math.min(selection.first.x, selection.second.x) + 0.5,
+                    oX = x,
+                    y = Math.min(selection.first.y, selection.second.y) + 0.5,
+                    oY = y,
+                    w = Math.abs(selection.second.x - selection.first.x) - 1,
+                    h = Math.abs(selection.second.y - selection.first.y) - 1;
+
+                if (selectionDirection(plot) === 'x') {
+                    h += y;
+                    y = 0;
+                }
+
+                if (selectionDirection(plot) === 'y') {
+                    w += x;
+                    x = 0;
+                }
+
+                if (visualization === "fill") {
+                    ctx.fillRect(x, y, w, h);
+                    ctx.strokeRect(x, y, w, h);
+                } else {
+                    ctx.fillRect(0, 0, plot.width(), plot.height());
+                    ctx.clearRect(x, y, w, h);
+                    drawSelectionDecorations(ctx, x, y, w, h, oX, oY, selectionDirection(plot));
+                }
+
+                ctx.restore();
+            }
+        });
+
+        plot.hooks.shutdown.push(function (plot, eventHolder) {
+            eventHolder.unbind("dragstart", onDragStart);
+            eventHolder.unbind("drag", onDrag);
+            eventHolder.unbind("dragend", onDragEnd);
+        });
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: {
+            selection: {
+                mode: null, // one of null, "x", "y" or "xy"
+                visualization: "focus", // "focus" or "fill"
+                color: "#888888",
+                shape: "round", // one of "round", "miter", or "bevel"
+                minSize: 5 // minimum number of pixels
+            }
+        },
+        name: 'selection',
+        version: '1.1'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.stack.js

@@ -0,0 +1,220 @@
+/* Flot plugin for stacking data sets rather than overlaying them.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The plugin assumes the data is sorted on x (or y if stacking horizontally).
+For line charts, it is assumed that if a line has an undefined gap (from a
+null point), then the line above it should have the same gap - insert zeros
+instead of "null" if you want another behaviour. This also holds for the start
+and end of the chart. Note that stacking a mix of positive and negative values
+in most instances doesn't make sense (so it looks weird).
+
+Two or more series are stacked when their "stack" attribute is set to the same
+key (which can be any number or string or just "true"). To specify the default
+stack, you can set the stack option like this:
+
+    series: {
+        stack: null/false, true, or a key (number/string)
+    }
+
+You can also specify it for a single series, like this:
+
+    $.plot( $("#placeholder"), [{
+        data: [ ... ],
+        stack: true
+    }])
+
+The stacking order is determined by the order of the data series in the array
+(later series end up on top of the previous).
+
+Internally, the plugin modifies the datapoints in each series, adding an
+offset to the y value. For line series, extra data points are inserted through
+interpolation. If there's a second y value, it's also adjusted (e.g for bar
+charts or filled areas).
+
+*/
+
+(function ($) {
+    var options = {
+        series: { stack: null } // or number/string
+    };
+
+    function init(plot) {
+        function findMatchingSeries(s, allseries) {
+            var res = null;
+            for (var i = 0; i < allseries.length; ++i) {
+                if (s === allseries[i]) break;
+
+                if (allseries[i].stack === s.stack) {
+                    res = allseries[i];
+                }
+            }
+
+            return res;
+        }
+
+        function addBottomPoints (s, datapoints) {
+            var formattedPoints = [];
+            for (var i = 0; i < datapoints.points.length; i += 2) {
+                formattedPoints.push(datapoints.points[i]);
+                formattedPoints.push(datapoints.points[i + 1]);
+                formattedPoints.push(0);
+            }
+
+            datapoints.format.push({
+                x: false,
+                y: true,
+                number: true,
+                required: false,
+                computeRange: s.yaxis.options.autoScale !== 'none',
+                defaultValue: 0
+            });
+            datapoints.points = formattedPoints;
+            datapoints.pointsize = 3;
+        }
+
+        function stackData(plot, s, datapoints) {
+            if (s.stack == null || s.stack === false) return;
+
+            var needsBottom = s.bars.show || (s.lines.show && s.lines.fill);
+            var hasBottom = datapoints.pointsize > 2 && (horizontal ? datapoints.format[2].x : datapoints.format[2].y);
+            // Series data is missing bottom points - need to format
+            if (needsBottom && !hasBottom) {
+                addBottomPoints(s, datapoints);
+            }
+
+            var other = findMatchingSeries(s, plot.getData());
+            if (!other) return;
+
+            var ps = datapoints.pointsize,
+                points = datapoints.points,
+                otherps = other.datapoints.pointsize,
+                otherpoints = other.datapoints.points,
+                newpoints = [],
+                px, py, intery, qx, qy, bottom,
+                withlines = s.lines.show,
+                horizontal = s.bars.horizontal,
+                withsteps = withlines && s.lines.steps,
+                fromgap = true,
+                keyOffset = horizontal ? 1 : 0,
+                accumulateOffset = horizontal ? 0 : 1,
+                i = 0, j = 0, l, m;
+
+            while (true) {
+                if (i >= points.length) break;
+
+                l = newpoints.length;
+
+                if (points[i] == null) {
+                    // copy gaps
+                    for (m = 0; m < ps; ++m) {
+                        newpoints.push(points[i + m]);
+                    }
+
+                    i += ps;
+                } else if (j >= otherpoints.length) {
+                    // for lines, we can't use the rest of the points
+                    if (!withlines) {
+                        for (m = 0; m < ps; ++m) {
+                            newpoints.push(points[i + m]);
+                        }
+                    }
+
+                    i += ps;
+                } else if (otherpoints[j] == null) {
+                    // oops, got a gap
+                    for (m = 0; m < ps; ++m) {
+                        newpoints.push(null);
+                    }
+
+                    fromgap = true;
+                    j += otherps;
+                } else {
+                    // cases where we actually got two points
+                    px = points[i + keyOffset];
+                    py = points[i + accumulateOffset];
+                    qx = otherpoints[j + keyOffset];
+                    qy = otherpoints[j + accumulateOffset];
+                    bottom = 0;
+
+                    if (px === qx) {
+                        for (m = 0; m < ps; ++m) {
+                            newpoints.push(points[i + m]);
+                        }
+
+                        newpoints[l + accumulateOffset] += qy;
+                        bottom = qy;
+
+                        i += ps;
+                        j += otherps;
+                    } else if (px > qx) {
+                        // we got past point below, might need to
+                        // insert interpolated extra point
+                        if (withlines && i > 0 && points[i - ps] != null) {
+                            intery = py + (points[i - ps + accumulateOffset] - py) * (qx - px) / (points[i - ps + keyOffset] - px);
+                            newpoints.push(qx);
+                            newpoints.push(intery + qy);
+                            for (m = 2; m < ps; ++m) {
+                                newpoints.push(points[i + m]);
+                            }
+
+                            bottom = qy;
+                        }
+
+                        j += otherps;
+                    } else { // px < qx
+                        if (fromgap && withlines) {
+                            // if we come from a gap, we just skip this point
+                            i += ps;
+                            continue;
+                        }
+
+                        for (m = 0; m < ps; ++m) {
+                            newpoints.push(points[i + m]);
+                        }
+
+                        // we might be able to interpolate a point below,
+                        // this can give us a better y
+                        if (withlines && j > 0 && otherpoints[j - otherps] != null) {
+                            bottom = qy + (otherpoints[j - otherps + accumulateOffset] - qy) * (px - qx) / (otherpoints[j - otherps + keyOffset] - qx);
+                        }
+
+                        newpoints[l + accumulateOffset] += bottom;
+
+                        i += ps;
+                    }
+
+                    fromgap = false;
+
+                    if (l !== newpoints.length && needsBottom) {
+                        newpoints[l + 2] += bottom;
+                    }
+                }
+
+                // maintain the line steps invariant
+                if (withsteps && l !== newpoints.length && l > 0 &&
+                    newpoints[l] !== null &&
+                    newpoints[l] !== newpoints[l - ps] &&
+                    newpoints[l + 1] !== newpoints[l - ps + 1]) {
+                    for (m = 0; m < ps; ++m) {
+                        newpoints[l + ps + m] = newpoints[l + m];
+                    }
+
+                    newpoints[l + 1] = newpoints[l - ps + 1];
+                }
+            }
+
+            datapoints.points = newpoints;
+        }
+
+        plot.hooks.processDatapoints.push(stackData);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'stack',
+        version: '1.2'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.symbol.js

@@ -0,0 +1,98 @@
+/* Flot plugin that adds some extra symbols for plotting points.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The symbols are accessed as strings through the standard symbol options:
+
+    series: {
+        points: {
+            symbol: "square" // or "diamond", "triangle", "cross", "plus", "ellipse", "rectangle"
+        }
+    }
+
+*/
+
+(function ($) {
+    // we normalize the area of each symbol so it is approximately the
+    // same as a circle of the given radius
+
+    var square = function (ctx, x, y, radius, shadow) {
+            // pi * r^2 = (2s)^2  =>  s = r * sqrt(pi)/2
+            var size = radius * Math.sqrt(Math.PI) / 2;
+            ctx.rect(x - size, y - size, size + size, size + size);
+        },
+        rectangle = function (ctx, x, y, radius, shadow) {
+            // pi * r^2 = (2s)^2  =>  s = r * sqrt(pi)/2
+            var size = radius * Math.sqrt(Math.PI) / 2;
+            ctx.rect(x - size, y - size, size + size, size + size);
+        },
+        diamond = function (ctx, x, y, radius, shadow) {
+            // pi * r^2 = 2s^2  =>  s = r * sqrt(pi/2)
+            var size = radius * Math.sqrt(Math.PI / 2);
+            ctx.moveTo(x - size, y);
+            ctx.lineTo(x, y - size);
+            ctx.lineTo(x + size, y);
+            ctx.lineTo(x, y + size);
+            ctx.lineTo(x - size, y);
+            ctx.lineTo(x, y - size);
+        },
+        triangle = function (ctx, x, y, radius, shadow) {
+            // pi * r^2 = 1/2 * s^2 * sin (pi / 3)  =>  s = r * sqrt(2 * pi / sin(pi / 3))
+            var size = radius * Math.sqrt(2 * Math.PI / Math.sin(Math.PI / 3));
+            var height = size * Math.sin(Math.PI / 3);
+            ctx.moveTo(x - size / 2, y + height / 2);
+            ctx.lineTo(x + size / 2, y + height / 2);
+            if (!shadow) {
+                ctx.lineTo(x, y - height / 2);
+                ctx.lineTo(x - size / 2, y + height / 2);
+                ctx.lineTo(x + size / 2, y + height / 2);
+            }
+        },
+        cross = function (ctx, x, y, radius, shadow) {
+            // pi * r^2 = (2s)^2  =>  s = r * sqrt(pi)/2
+            var size = radius * Math.sqrt(Math.PI) / 2;
+            ctx.moveTo(x - size, y - size);
+            ctx.lineTo(x + size, y + size);
+            ctx.moveTo(x - size, y + size);
+            ctx.lineTo(x + size, y - size);
+        },
+        ellipse = function(ctx, x, y, radius, shadow, fill) {
+            if (!shadow) {
+                ctx.moveTo(x + radius, y);
+                ctx.arc(x, y, radius, 0, Math.PI * 2, false);
+            }
+        },
+        plus = function (ctx, x, y, radius, shadow) {
+            var size = radius * Math.sqrt(Math.PI / 2);
+            ctx.moveTo(x - size, y);
+            ctx.lineTo(x + size, y);
+            ctx.moveTo(x, y + size);
+            ctx.lineTo(x, y - size);
+        },
+        handlers = {
+            square: square,
+            rectangle: rectangle,
+            diamond: diamond,
+            triangle: triangle,
+            cross: cross,
+            ellipse: ellipse,
+            plus: plus
+        };
+
+    square.fill = true;
+    rectangle.fill = true;
+    diamond.fill = true;
+    triangle.fill = true;
+    ellipse.fill = true;
+
+    function init(plot) {
+        plot.drawSymbol = handlers;
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        name: 'symbols',
+        version: '1.0'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.threshold.js

@@ -0,0 +1,143 @@
+/* Flot plugin for thresholding data.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The plugin supports these options:
+
+    series: {
+        threshold: {
+            below: number
+            color: colorspec
+        }
+    }
+
+It can also be applied to a single series, like this:
+
+    $.plot( $("#placeholder"), [{
+        data: [ ... ],
+        threshold: { ... }
+    }])
+
+An array can be passed for multiple thresholding, like this:
+
+    threshold: [{
+        below: number1
+        color: color1
+    },{
+        below: number2
+        color: color2
+    }]
+
+These multiple threshold objects can be passed in any order since they are
+sorted by the processing function.
+
+The data points below "below" are drawn with the specified color. This makes
+it easy to mark points below 0, e.g. for budget data.
+
+Internally, the plugin works by splitting the data into two series, above and
+below the threshold. The extra series below the threshold will have its label
+cleared and the special "originSeries" attribute set to the original series.
+You may need to check for this in hover events.
+
+*/
+
+(function ($) {
+    var options = {
+        series: { threshold: null } // or { below: number, color: color spec}
+    };
+
+    function init(plot) {
+        function thresholdData(plot, s, datapoints, below, color) {
+            var ps = datapoints.pointsize, i, x, y, p, prevp,
+                thresholded = $.extend({}, s); // note: shallow copy
+
+            thresholded.datapoints = { points: [], pointsize: ps, format: datapoints.format };
+            thresholded.label = null;
+            thresholded.color = color;
+            thresholded.threshold = null;
+            thresholded.originSeries = s;
+            thresholded.data = [];
+
+            var origpoints = datapoints.points,
+                addCrossingPoints = s.lines.show;
+
+            var threspoints = [];
+            var newpoints = [];
+            var m;
+
+            for (i = 0; i < origpoints.length; i += ps) {
+                x = origpoints[i];
+                y = origpoints[i + 1];
+
+                prevp = p;
+                if (y < below) p = threspoints;
+                else p = newpoints;
+
+                if (addCrossingPoints && prevp !== p &&
+                    x !== null && i > 0 &&
+                    origpoints[i - ps] != null) {
+                    var interx = x + (below - y) * (x - origpoints[i - ps]) / (y - origpoints[i - ps + 1]);
+                    prevp.push(interx);
+                    prevp.push(below);
+                    for (m = 2; m < ps; ++m) {
+                        prevp.push(origpoints[i + m]);
+                    }
+
+                    p.push(null); // start new segment
+                    p.push(null);
+                    for (m = 2; m < ps; ++m) {
+                        p.push(origpoints[i + m]);
+                    }
+
+                    p.push(interx);
+                    p.push(below);
+                    for (m = 2; m < ps; ++m) {
+                        p.push(origpoints[i + m]);
+                    }
+                }
+
+                p.push(x);
+                p.push(y);
+                for (m = 2; m < ps; ++m) {
+                    p.push(origpoints[i + m]);
+                }
+            }
+
+            datapoints.points = newpoints;
+            thresholded.datapoints.points = threspoints;
+
+            if (thresholded.datapoints.points.length > 0) {
+                var origIndex = $.inArray(s, plot.getData());
+                // Insert newly-generated series right after original one (to prevent it from becoming top-most)
+                plot.getData().splice(origIndex + 1, 0, thresholded);
+            }
+
+            // FIXME: there are probably some edge cases left in bars
+        }
+
+        function processThresholds(plot, s, datapoints) {
+            if (!s.threshold) return;
+            if (s.threshold instanceof Array) {
+                s.threshold.sort(function(a, b) {
+                    return a.below - b.below;
+                });
+
+                $(s.threshold).each(function(i, th) {
+                    thresholdData(plot, s, datapoints, th.below, th.color);
+                });
+            } else {
+                thresholdData(plot, s, datapoints, s.threshold.below, s.threshold.color);
+            }
+        }
+
+        plot.hooks.processDatapoints.push(processThresholds);
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'threshold',
+        version: '1.2'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.time.js

@@ -0,0 +1,585 @@
+/* Pretty handling of time axes.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+Set axis.mode to "time" to enable. See the section "Time series data" in
+API.txt for details.
+*/
+
+(function($) {
+    'use strict';
+
+    var options = {
+        xaxis: {
+            timezone: null, // "browser" for local to the client or timezone for timezone-js
+            timeformat: null, // format string to use
+            twelveHourClock: false, // 12 or 24 time in time mode
+            monthNames: null, // list of names of months
+            timeBase: 'seconds' // are the values in given in mircoseconds, milliseconds or seconds
+        },
+        yaxis: {
+            timeBase: 'seconds'
+        }
+    };
+
+    var floorInBase = $.plot.saturated.floorInBase;
+
+    // Method to provide microsecond support to Date like classes.
+    var CreateMicroSecondDate = function(dateType, microEpoch) {
+        var newDate = new dateType(microEpoch);
+
+        var oldSetTime = newDate.setTime.bind(newDate);
+        newDate.update = function(microEpoch) {
+            oldSetTime(microEpoch);
+
+            // Round epoch to 3 decimal accuracy
+            microEpoch = Math.round(microEpoch*1000)/1000;
+
+            // Microseconds are stored as integers
+            this.microseconds = 1000 * (microEpoch - Math.floor(microEpoch));
+        };
+
+        var oldGetTime = newDate.getTime.bind(newDate);
+        newDate.getTime = function () {
+            var microEpoch = oldGetTime() + this.microseconds / 1000;
+            return microEpoch;
+        };
+
+        newDate.setTime = function (microEpoch) {
+            this.update(microEpoch);
+        };
+
+        newDate.getMicroseconds = function() {
+            return this.microseconds;
+        };
+
+        newDate.setMicroseconds = function(microseconds) {
+            var epochWithoutMicroseconds = oldGetTime();
+            var newEpoch = epochWithoutMicroseconds + microseconds/1000;
+            this.update(newEpoch);
+        };
+
+        newDate.setUTCMicroseconds = function(microseconds) { this.setMicroseconds(microseconds); }
+
+        newDate.getUTCMicroseconds = function() { return this.getMicroseconds(); }
+
+        newDate.microseconds = null;
+        newDate.microEpoch = null;
+        newDate.update(microEpoch);
+        return newDate;
+    }
+
+    // Returns a string with the date d formatted according to fmt.
+    // A subset of the Open Group's strftime format is supported.
+
+    function formatDate(d, fmt, monthNames, dayNames) {
+        if (typeof d.strftime === "function") {
+            return d.strftime(fmt);
+        }
+
+        var leftPad = function(n, pad) {
+			n = "" + n;
+			pad = "" + (pad == null ? "0" : pad);
+			return n.length == 1 ? pad + n : n;
+		};
+
+		var formatSubSeconds = function(milliseconds, microseconds, numberDecimalPlaces) {
+            var totalMicroseconds = milliseconds * 1000 + microseconds;
+            var formattedString;
+			if (numberDecimalPlaces < 6 && numberDecimalPlaces > 0) {
+				var magnitude = parseFloat('1e' + (numberDecimalPlaces - 6));
+				totalMicroseconds = Math.round(Math.round(totalMicroseconds * magnitude) / magnitude);
+				formattedString = ('00000' + totalMicroseconds).slice(-6,-(6 - numberDecimalPlaces));
+			} else {
+                totalMicroseconds = Math.round(totalMicroseconds)
+				formattedString = ('00000' + totalMicroseconds).slice(-6);
+			}
+			return formattedString;
+		};
+
+        var r = [];
+        var escape = false;
+        var hours = d.getHours();
+		var isAM = hours < 12;
+
+        if (!monthNames) {
+            monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
+        }
+
+        if (!dayNames) {
+            dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
+        }
+
+        var hours12;
+		if (hours > 12) {
+			hours12 = hours - 12;
+		} else if (hours == 0) {
+			hours12 = 12;
+		} else {
+			hours12 = hours;
+		}
+
+        var decimals = -1;
+        for (var i = 0; i < fmt.length; ++i) {
+			var c = fmt.charAt(i);
+
+            if (!isNaN(Number(c)) && Number(c) > 0) {
+                decimals = Number(c);
+            } else if (escape) {
+				switch (c) {
+					case 'a': c = "" + dayNames[d.getDay()]; break;
+					case 'b': c = "" + monthNames[d.getMonth()]; break;
+					case 'd': c = leftPad(d.getDate()); break;
+					case 'e': c = leftPad(d.getDate(), " "); break;
+					case 'h':	// For back-compat with 0.7; remove in 1.0
+					case 'H': c = leftPad(hours); break;
+					case 'I': c = leftPad(hours12); break;
+					case 'l': c = leftPad(hours12, " "); break;
+					case 'm': c = leftPad(d.getMonth() + 1); break;
+					case 'M': c = leftPad(d.getMinutes()); break;
+					// quarters not in Open Group's strftime specification
+					case 'q':
+						c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
+					case 'S': c = leftPad(d.getSeconds()); break;
+					case 's': c = "" + formatSubSeconds(d.getMilliseconds(), d.getMicroseconds(), decimals); break;
+					case 'y': c = leftPad(d.getFullYear() % 100); break;
+					case 'Y': c = "" + d.getFullYear(); break;
+					case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
+					case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
+					case 'w': c = "" + d.getDay(); break;
+				}
+				r.push(c);
+				escape = false;
+			} else {
+				if (c == "%") {
+					escape = true;
+				} else {
+					r.push(c);
+				}
+			}
+		}
+
+		return r.join("");
+    }
+
+    // To have a consistent view of time-based data independent of which time
+    // zone the client happens to be in we need a date-like object independent
+    // of time zones.  This is done through a wrapper that only calls the UTC
+    // versions of the accessor methods.
+
+    function makeUtcWrapper(d) {
+        function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
+            sourceObj[sourceMethod] = function() {
+                return targetObj[targetMethod].apply(targetObj, arguments);
+            };
+        }
+
+        var utc = {
+            date: d
+        };
+
+        // support strftime, if found
+        if (d.strftime !== undefined) {
+            addProxyMethod(utc, "strftime", d, "strftime");
+        }
+
+        addProxyMethod(utc, "getTime", d, "getTime");
+        addProxyMethod(utc, "setTime", d, "setTime");
+
+        var props = ["Date", "Day", "FullYear", "Hours", "Minutes", "Month", "Seconds", "Milliseconds", "Microseconds"];
+
+        for (var p = 0; p < props.length; p++) {
+            addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
+            addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
+        }
+
+        return utc;
+    }
+
+    // select time zone strategy.  This returns a date-like object tied to the
+    // desired timezone
+    function dateGenerator(ts, opts) {
+        var maxDateValue = 8640000000000000;
+
+        if (opts && opts.timeBase === 'seconds') {
+            ts *= 1000;
+        } else if (opts.timeBase === 'microseconds') {
+            ts /= 1000;
+        }
+
+        if (ts > maxDateValue) {
+            ts = maxDateValue;
+        } else if (ts < -maxDateValue) {
+            ts = -maxDateValue;
+        }
+
+        if (opts.timezone === "browser") {
+            return CreateMicroSecondDate(Date, ts);
+        } else if (!opts.timezone || opts.timezone === "utc") {
+            return makeUtcWrapper(CreateMicroSecondDate(Date, ts));
+        } else if (typeof timezoneJS !== "undefined" && typeof timezoneJS.Date !== "undefined") {
+            var d = CreateMicroSecondDate(timezoneJS.Date, ts);
+            // timezone-js is fickle, so be sure to set the time zone before
+            // setting the time.
+            d.setTimezone(opts.timezone);
+            d.setTime(ts);
+            return d;
+        } else {
+            return makeUtcWrapper(CreateMicroSecondDate(Date, ts));
+        }
+    }
+
+    // map of app. size of time units in seconds
+    var timeUnitSizeSeconds = {
+        "microsecond": 0.000001,
+        "millisecond": 0.001,
+        "second": 1,
+        "minute": 60,
+        "hour": 60 * 60,
+        "day": 24 * 60 * 60,
+        "month": 30 * 24 * 60 * 60,
+        "quarter": 3 * 30 * 24 * 60 * 60,
+        "year": 365.2425 * 24 * 60 * 60
+    };
+
+    // map of app. size of time units in milliseconds
+    var timeUnitSizeMilliseconds = {
+        "microsecond": 0.001,
+        "millisecond": 1,
+        "second": 1000,
+        "minute": 60 * 1000,
+        "hour": 60 * 60 * 1000,
+        "day": 24 * 60 * 60 * 1000,
+        "month": 30 * 24 * 60 * 60 * 1000,
+        "quarter": 3 * 30 * 24 * 60 * 60 * 1000,
+        "year": 365.2425 * 24 * 60 * 60 * 1000
+    };
+
+    // map of app. size of time units in microseconds
+    var timeUnitSizeMicroseconds = {
+        "microsecond": 1,
+        "millisecond": 1000,
+        "second": 1000000,
+        "minute": 60 * 1000000,
+        "hour": 60 * 60 * 1000000,
+        "day": 24 * 60 * 60 * 1000000,
+        "month": 30 * 24 * 60 * 60 * 1000000,
+        "quarter": 3 * 30 * 24 * 60 * 60 * 1000000,
+        "year": 365.2425 * 24 * 60 * 60 * 1000000
+    };
+
+    // the allowed tick sizes, after 1 year we use
+    // an integer algorithm
+
+    var baseSpec = [
+        [1, "microsecond"], [2, "microsecond"], [5, "microsecond"], [10, "microsecond"],
+        [25, "microsecond"], [50, "microsecond"], [100, "microsecond"], [250, "microsecond"], [500, "microsecond"],
+        [1, "millisecond"], [2, "millisecond"], [5, "millisecond"], [10, "millisecond"],
+        [25, "millisecond"], [50, "millisecond"], [100, "millisecond"], [250, "millisecond"], [500, "millisecond"],
+        [1, "second"], [2, "second"], [5, "second"], [10, "second"],
+        [30, "second"],
+        [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
+        [30, "minute"],
+        [1, "hour"], [2, "hour"], [4, "hour"],
+        [8, "hour"], [12, "hour"],
+        [1, "day"], [2, "day"], [3, "day"],
+        [0.25, "month"], [0.5, "month"], [1, "month"],
+        [2, "month"]
+    ];
+
+    // we don't know which variant(s) we'll need yet, but generating both is
+    // cheap
+
+    var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
+        [1, "year"]]);
+    var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
+        [1, "year"]]);
+
+
+    function dateTickGenerator(axis) {
+        var opts = axis.options,
+            ticks = [],
+            d = dateGenerator(axis.min, opts),
+            minSize = 0;
+
+        // make quarter use a possibility if quarters are
+        // mentioned in either of these options
+        var spec = (opts.tickSize && opts.tickSize[1] ===
+            "quarter") ||
+            (opts.minTickSize && opts.minTickSize[1] ===
+            "quarter") ? specQuarters : specMonths;
+
+        var timeUnitSize;
+        if (opts.timeBase === 'seconds') {
+            timeUnitSize = timeUnitSizeSeconds;
+        } else if (opts.timeBase === 'microseconds') {
+            timeUnitSize = timeUnitSizeMicroseconds;
+        } else {
+            timeUnitSize = timeUnitSizeMilliseconds;
+        }
+
+        if (opts.minTickSize !== null && opts.minTickSize !== undefined) {
+            if (typeof opts.tickSize === "number") {
+                minSize = opts.tickSize;
+            } else {
+                minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
+            }
+        }
+
+        for (var i = 0; i < spec.length - 1; ++i) {
+            if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]] +
+                spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2 &&
+                spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
+                break;
+            }
+        }
+
+        var size = spec[i][0];
+        var unit = spec[i][1];
+        // special-case the possibility of several years
+        if (unit === "year") {
+            // if given a minTickSize in years, just use it,
+            // ensuring that it's an integer
+
+            if (opts.minTickSize !== null && opts.minTickSize !== undefined && opts.minTickSize[1] === "year") {
+                size = Math.floor(opts.minTickSize[0]);
+            } else {
+                var magn = parseFloat('1e' + Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
+                var norm = (axis.delta / timeUnitSize.year) / magn;
+
+                if (norm < 1.5) {
+                    size = 1;
+                } else if (norm < 3) {
+                    size = 2;
+                } else if (norm < 7.5) {
+                    size = 5;
+                } else {
+                    size = 10;
+                }
+
+                size *= magn;
+            }
+
+            // minimum size for years is 1
+
+            if (size < 1) {
+                size = 1;
+            }
+        }
+
+        axis.tickSize = opts.tickSize || [size, unit];
+        var tickSize = axis.tickSize[0];
+        unit = axis.tickSize[1];
+
+        var step = tickSize * timeUnitSize[unit];
+
+        if (unit === "microsecond") {
+            d.setMicroseconds(floorInBase(d.getMicroseconds(), tickSize));
+        } else if (unit === "millisecond") {
+            d.setMilliseconds(floorInBase(d.getMilliseconds(), tickSize));
+        } else if (unit === "second") {
+            d.setSeconds(floorInBase(d.getSeconds(), tickSize));
+        } else if (unit === "minute") {
+            d.setMinutes(floorInBase(d.getMinutes(), tickSize));
+        } else if (unit === "hour") {
+            d.setHours(floorInBase(d.getHours(), tickSize));
+        } else if (unit === "month") {
+            d.setMonth(floorInBase(d.getMonth(), tickSize));
+        } else if (unit === "quarter") {
+            d.setMonth(3 * floorInBase(d.getMonth() / 3,
+                tickSize));
+        } else if (unit === "year") {
+            d.setFullYear(floorInBase(d.getFullYear(), tickSize));
+        }
+
+        // reset smaller components
+
+        if (step >= timeUnitSize.millisecond) {
+            if (step >= timeUnitSize.second) {
+                d.setMicroseconds(0);
+            } else {
+                d.setMicroseconds(d.getMilliseconds()*1000);
+            }
+        }
+        if (step >= timeUnitSize.minute) {
+            d.setSeconds(0);
+        }
+        if (step >= timeUnitSize.hour) {
+            d.setMinutes(0);
+        }
+        if (step >= timeUnitSize.day) {
+            d.setHours(0);
+        }
+        if (step >= timeUnitSize.day * 4) {
+            d.setDate(1);
+        }
+        if (step >= timeUnitSize.month * 2) {
+            d.setMonth(floorInBase(d.getMonth(), 3));
+        }
+        if (step >= timeUnitSize.quarter * 2) {
+            d.setMonth(floorInBase(d.getMonth(), 6));
+        }
+        if (step >= timeUnitSize.year) {
+            d.setMonth(0);
+        }
+
+        var carry = 0;
+        var v = Number.NaN;
+        var v1000;
+        var prev;
+        do {
+            prev = v;
+            v1000 = d.getTime();
+            if (opts && opts.timeBase === 'seconds') {
+                v = v1000 / 1000;
+            } else if (opts && opts.timeBase === 'microseconds') {
+                v = v1000 * 1000;
+            } else {
+                v = v1000;
+            }
+
+            ticks.push(v);
+
+            if (unit === "month" || unit === "quarter") {
+                if (tickSize < 1) {
+                    // a bit complicated - we'll divide the
+                    // month/quarter up but we need to take
+                    // care of fractions so we don't end up in
+                    // the middle of a day
+                    d.setDate(1);
+                    var start = d.getTime();
+                    d.setMonth(d.getMonth() +
+                        (unit === "quarter" ? 3 : 1));
+                    var end = d.getTime();
+                    d.setTime((v + carry * timeUnitSize.hour + (end - start) * tickSize));
+                    carry = d.getHours();
+                    d.setHours(0);
+                } else {
+                    d.setMonth(d.getMonth() +
+                        tickSize * (unit === "quarter" ? 3 : 1));
+                }
+            } else if (unit === "year") {
+                d.setFullYear(d.getFullYear() + tickSize);
+            } else {
+                if (opts.timeBase === 'seconds') {
+                    d.setTime((v + step) * 1000);
+                } else if (opts.timeBase === 'microseconds') {
+                    d.setTime((v + step) / 1000);
+                } else {
+                    d.setTime(v + step);
+                }
+            }
+        } while (v < axis.max && v !== prev);
+
+        return ticks;
+    };
+
+    function init(plot) {
+        plot.hooks.processOptions.push(function (plot) {
+            $.each(plot.getAxes(), function(axisName, axis) {
+                var opts = axis.options;
+                if (opts.mode === "time") {
+                    axis.tickGenerator = dateTickGenerator;
+
+                    axis.tickFormatter = function (v, axis) {
+                        var d = dateGenerator(v, axis.options);
+
+                        // first check global format
+						if (opts.timeformat != null) {
+							return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
+						}
+
+						// possibly use quarters if quarters are mentioned in
+						// any of these places
+						var useQuarters = (axis.options.tickSize &&
+								axis.options.tickSize[1] == "quarter") ||
+							(axis.options.minTickSize &&
+                                axis.options.minTickSize[1] == "quarter");
+
+                        var timeUnitSize;
+                        if (opts.timeBase === 'seconds') {
+                            timeUnitSize = timeUnitSizeSeconds;
+                        } else if (opts.timeBase === 'microseconds') {
+                            timeUnitSize = timeUnitSizeMicroseconds;
+                        } else {
+                            timeUnitSize = timeUnitSizeMilliseconds;
+                        }
+
+						var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
+						var span = axis.max - axis.min;
+						var suffix = (opts.twelveHourClock) ? " %p" : "";
+						var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
+                        var factor;
+						var fmt;
+
+                        if (opts.timeBase === 'seconds') {
+                            factor = 1;
+                        } else if (opts.timeBase === 'microseconds') {
+                            factor = 1000000
+                        } else {
+                            factor = 1000;
+                        }
+
+                        if (t < timeUnitSize.second) {
+                            var decimals = -Math.floor(Math.log10(t/factor))
+
+                            // the two-and-halves require an additional decimal
+                            if (String(t).indexOf('25') > -1) {
+                                decimals++;
+                            }
+
+							fmt = "%S.%" + decimals + "s";
+                        } else
+                        if (t < timeUnitSize.minute) {
+							fmt = hourCode + ":%M:%S" + suffix;
+						} else if (t < timeUnitSize.day) {
+							if (span < 2 * timeUnitSize.day) {
+								fmt = hourCode + ":%M" + suffix;
+							} else {
+								fmt = "%b %d " + hourCode + ":%M" + suffix;
+							}
+						} else if (t < timeUnitSize.month) {
+							fmt = "%b %d";
+						} else if ((useQuarters && t < timeUnitSize.quarter) ||
+							(!useQuarters && t < timeUnitSize.year)) {
+							if (span < timeUnitSize.year) {
+								fmt = "%b";
+							} else {
+								fmt = "%b %Y";
+							}
+						} else if (useQuarters && t < timeUnitSize.year) {
+							if (span < timeUnitSize.year) {
+								fmt = "Q%q";
+							} else {
+								fmt = "Q%q %Y";
+							}
+						} else {
+							fmt = "%Y";
+						}
+
+						var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);
+
+						return rt;
+                    };
+                }
+            });
+        });
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'time',
+        version: '1.0'
+    });
+
+    // Time-axis support used to be in Flot core, which exposed the
+    // formatDate function on the plot object.  Various plugins depend
+    // on the function, so we need to re-expose it here.
+
+    $.plot.formatDate = formatDate;
+    $.plot.dateGenerator = dateGenerator;
+    $.plot.dateTickGenerator = dateTickGenerator;
+    $.plot.makeUtcWrapper = makeUtcWrapper;
+})(jQuery);

frontend/lib/flot/jquery.flot.touch.js

@@ -0,0 +1,320 @@
+
+/* global jQuery */
+
+(function($) {
+    'use strict';
+
+    var options = {
+        propagateSupportedGesture: false
+    };
+
+    function init(plot) {
+        plot.hooks.processOptions.push(initTouchNavigation);
+    }
+
+    function initTouchNavigation(plot, options) {
+        var gestureState = {
+                twoTouches: false,
+                currentTapStart: { x: 0, y: 0 },
+                currentTapEnd: { x: 0, y: 0 },
+                prevTap: { x: 0, y: 0 },
+                currentTap: { x: 0, y: 0 },
+                interceptedLongTap: false,
+                isUnsupportedGesture: false,
+                prevTapTime: null,
+                tapStartTime: null,
+                longTapTriggerId: null
+            },
+            maxDistanceBetweenTaps = 20,
+            maxIntervalBetweenTaps = 500,
+            maxLongTapDistance = 20,
+            minLongTapDuration = 1500,
+            pressedTapDuration = 125,
+            mainEventHolder;
+
+        function interpretGestures(e) {
+            var o = plot.getOptions();
+
+            if (!o.pan.active && !o.zoom.active) {
+                return;
+            }
+
+            updateOnMultipleTouches(e);
+            mainEventHolder.dispatchEvent(new CustomEvent('touchevent', { detail: e }));
+
+            if (isPinchEvent(e)) {
+                executeAction(e, 'pinch');
+            } else {
+                executeAction(e, 'pan');
+                if (!wasPinchEvent(e)) {
+                    if (isDoubleTap(e)) {
+                        executeAction(e, 'doubleTap');
+                    }
+                    executeAction(e, 'tap');
+                    executeAction(e, 'longTap');
+                }
+            }
+        }
+
+        function executeAction(e, gesture) {
+            switch (gesture) {
+                case 'pan':
+                    pan[e.type](e);
+                    break;
+                case 'pinch':
+                    pinch[e.type](e);
+                    break;
+                case 'doubleTap':
+                    doubleTap.onDoubleTap(e);
+                    break;
+                case 'longTap':
+                    longTap[e.type](e);
+                    break;
+                case 'tap':
+                    tap[e.type](e);
+                    break;
+            }
+        }
+
+        function bindEvents(plot, eventHolder) {
+            mainEventHolder = eventHolder[0];
+            eventHolder[0].addEventListener('touchstart', interpretGestures, false);
+            eventHolder[0].addEventListener('touchmove', interpretGestures, false);
+            eventHolder[0].addEventListener('touchend', interpretGestures, false);
+        }
+
+        function shutdown(plot, eventHolder) {
+            eventHolder[0].removeEventListener('touchstart', interpretGestures);
+            eventHolder[0].removeEventListener('touchmove', interpretGestures);
+            eventHolder[0].removeEventListener('touchend', interpretGestures);
+            if (gestureState.longTapTriggerId) {
+                clearTimeout(gestureState.longTapTriggerId);
+                gestureState.longTapTriggerId = null;
+            }
+        }
+
+        var pan = {
+            touchstart: function(e) {
+                updatePrevForDoubleTap();
+                updateCurrentForDoubleTap(e);
+                updateStateForLongTapStart(e);
+
+                mainEventHolder.dispatchEvent(new CustomEvent('panstart', { detail: e }));
+            },
+
+            touchmove: function(e) {
+                preventEventBehaviors(e);
+
+                updateCurrentForDoubleTap(e);
+                updateStateForLongTapEnd(e);
+
+                if (!gestureState.isUnsupportedGesture) {
+                    mainEventHolder.dispatchEvent(new CustomEvent('pandrag', { detail: e }));
+                }
+            },
+
+            touchend: function(e) {
+                preventEventBehaviors(e);
+
+                if (wasPinchEvent(e)) {
+                    mainEventHolder.dispatchEvent(new CustomEvent('pinchend', { detail: e }));
+                    mainEventHolder.dispatchEvent(new CustomEvent('panstart', { detail: e }));
+                } else if (noTouchActive(e)) {
+                    mainEventHolder.dispatchEvent(new CustomEvent('panend', { detail: e }));
+                }
+            }
+        };
+
+        var pinch = {
+            touchstart: function(e) {
+                mainEventHolder.dispatchEvent(new CustomEvent('pinchstart', { detail: e }));
+            },
+
+            touchmove: function(e) {
+                preventEventBehaviors(e);
+                gestureState.twoTouches = isPinchEvent(e);
+                if (!gestureState.isUnsupportedGesture) {
+                    mainEventHolder.dispatchEvent(new CustomEvent('pinchdrag', { detail: e }));
+                }
+            },
+
+            touchend: function(e) {
+                preventEventBehaviors(e);
+            }
+        };
+
+        var doubleTap = {
+            onDoubleTap: function(e) {
+                preventEventBehaviors(e);
+                mainEventHolder.dispatchEvent(new CustomEvent('doubletap', { detail: e }));
+            }
+        };
+
+        var longTap = {
+            touchstart: function(e) {
+                longTap.waitForLongTap(e);
+            },
+
+            touchmove: function(e) {
+            },
+
+            touchend: function(e) {
+                if (gestureState.longTapTriggerId) {
+                    clearTimeout(gestureState.longTapTriggerId);
+                    gestureState.longTapTriggerId = null;
+                }
+            },
+
+            isLongTap: function(e) {
+                var currentTime = new Date().getTime(),
+                    tapDuration = currentTime - gestureState.tapStartTime;
+                if (tapDuration >= minLongTapDuration && !gestureState.interceptedLongTap) {
+                    if (distance(gestureState.currentTapStart.x, gestureState.currentTapStart.y, gestureState.currentTapEnd.x, gestureState.currentTapEnd.y) < maxLongTapDistance) {
+                        gestureState.interceptedLongTap = true;
+                        return true;
+                    }
+                }
+                return false;
+            },
+
+            waitForLongTap: function(e) {
+                var longTapTrigger = function() {
+                    if (longTap.isLongTap(e)) {
+                        mainEventHolder.dispatchEvent(new CustomEvent('longtap', { detail: e }));
+                    }
+                    gestureState.longTapTriggerId = null;
+                };
+                if (!gestureState.longTapTriggerId) {
+                    gestureState.longTapTriggerId = setTimeout(longTapTrigger, minLongTapDuration);
+                }
+            }
+        };
+
+        var tap = {
+            touchstart: function(e) {
+                gestureState.tapStartTime = new Date().getTime();
+            },
+
+            touchmove: function(e) {
+            },
+
+            touchend: function(e) {
+                if (tap.isTap(e)) {
+                    mainEventHolder.dispatchEvent(new CustomEvent('tap', { detail: e }));
+                    preventEventBehaviors(e);
+                }
+            },
+
+            isTap: function(e) {
+                var currentTime = new Date().getTime(),
+                    tapDuration = currentTime - gestureState.tapStartTime;
+                if (tapDuration <= pressedTapDuration) {
+                    if (distance(gestureState.currentTapStart.x, gestureState.currentTapStart.y, gestureState.currentTapEnd.x, gestureState.currentTapEnd.y) < maxLongTapDistance) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+        };
+
+        if (options.pan.enableTouch === true || options.zoom.enableTouch) {
+            plot.hooks.bindEvents.push(bindEvents);
+            plot.hooks.shutdown.push(shutdown);
+        };
+
+        function updatePrevForDoubleTap() {
+            gestureState.prevTap = {
+                x: gestureState.currentTap.x,
+                y: gestureState.currentTap.y
+            };
+        };
+
+        function updateCurrentForDoubleTap(e) {
+            gestureState.currentTap = {
+                x: e.touches[0].pageX,
+                y: e.touches[0].pageY
+            };
+        }
+
+        function updateStateForLongTapStart(e) {
+            gestureState.tapStartTime = new Date().getTime();
+            gestureState.interceptedLongTap = false;
+            gestureState.currentTapStart = {
+                x: e.touches[0].pageX,
+                y: e.touches[0].pageY
+            };
+            gestureState.currentTapEnd = {
+                x: e.touches[0].pageX,
+                y: e.touches[0].pageY
+            };
+        };
+
+        function updateStateForLongTapEnd(e) {
+            gestureState.currentTapEnd = {
+                x: e.touches[0].pageX,
+                y: e.touches[0].pageY
+            };
+        };
+
+        function isDoubleTap(e) {
+            var currentTime = new Date().getTime(),
+                intervalBetweenTaps = currentTime - gestureState.prevTapTime;
+
+            if (intervalBetweenTaps >= 0 && intervalBetweenTaps < maxIntervalBetweenTaps) {
+                if (distance(gestureState.prevTap.x, gestureState.prevTap.y, gestureState.currentTap.x, gestureState.currentTap.y) < maxDistanceBetweenTaps) {
+                    e.firstTouch = gestureState.prevTap;
+                    e.secondTouch = gestureState.currentTap;
+                    return true;
+                }
+            }
+            gestureState.prevTapTime = currentTime;
+            return false;
+        }
+
+        function preventEventBehaviors(e) {
+            if (!gestureState.isUnsupportedGesture) {
+                e.preventDefault();
+                if (!plot.getOptions().propagateSupportedGesture) {
+                    e.stopPropagation();
+                }
+            }
+        }
+
+        function distance(x1, y1, x2, y2) {
+            return Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
+        }
+
+        function noTouchActive(e) {
+            return (e.touches && e.touches.length === 0);
+        }
+
+        function wasPinchEvent(e) {
+            return (gestureState.twoTouches && e.touches.length === 1);
+        }
+
+        function updateOnMultipleTouches(e) {
+            if (e.touches.length >= 3) {
+                gestureState.isUnsupportedGesture = true;
+            } else {
+                gestureState.isUnsupportedGesture = false;
+            }
+        }
+
+        function isPinchEvent(e) {
+            if (e.touches && e.touches.length >= 2) {
+                if (e.touches[0].target === plot.getEventHolder() &&
+                    e.touches[1].target === plot.getEventHolder()) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'navigateTouch',
+        version: '0.3'
+    });
+})(jQuery);

frontend/lib/flot/jquery.flot.touchNavigate.js

@@ -0,0 +1,360 @@
+/* global jQuery */
+
+(function($) {
+    'use strict';
+
+    var options = {
+        zoom: {
+            enableTouch: false
+        },
+        pan: {
+            enableTouch: false,
+            touchMode: 'manual'
+        },
+        recenter: {
+            enableTouch: true
+        }
+    };
+
+    var ZOOM_DISTANCE_MARGIN = $.plot.uiConstants.ZOOM_DISTANCE_MARGIN;
+
+    function init(plot) {
+        plot.hooks.processOptions.push(initTouchNavigation);
+    }
+
+    function initTouchNavigation(plot, options) {
+        var gestureState = {
+                zoomEnable: false,
+                prevDistance: null,
+                prevTapTime: 0,
+                prevPanPosition: { x: 0, y: 0 },
+                prevTapPosition: { x: 0, y: 0 }
+            },
+            navigationState = {
+                prevTouchedAxis: 'none',
+                currentTouchedAxis: 'none',
+                touchedAxis: null,
+                navigationConstraint: 'unconstrained',
+                initialState: null,
+            },
+            useManualPan = options.pan.interactive && options.pan.touchMode === 'manual',
+            smartPanLock = options.pan.touchMode === 'smartLock',
+            useSmartPan = options.pan.interactive && (smartPanLock || options.pan.touchMode === 'smart'),
+            pan, pinch, doubleTap;
+
+        function bindEvents(plot, eventHolder) {
+            var o = plot.getOptions();
+
+            if (o.zoom.interactive && o.zoom.enableTouch) {
+                eventHolder[0].addEventListener('pinchstart', pinch.start, false);
+                eventHolder[0].addEventListener('pinchdrag', pinch.drag, false);
+                eventHolder[0].addEventListener('pinchend', pinch.end, false);
+            }
+
+            if (o.pan.interactive && o.pan.enableTouch) {
+                eventHolder[0].addEventListener('panstart', pan.start, false);
+                eventHolder[0].addEventListener('pandrag', pan.drag, false);
+                eventHolder[0].addEventListener('panend', pan.end, false);
+            }
+
+            if ((o.recenter.interactive && o.recenter.enableTouch)) {
+                eventHolder[0].addEventListener('doubletap', doubleTap.recenterPlot, false);
+            }
+        }
+
+        function shutdown(plot, eventHolder) {
+            eventHolder[0].removeEventListener('panstart', pan.start);
+            eventHolder[0].removeEventListener('pandrag', pan.drag);
+            eventHolder[0].removeEventListener('panend', pan.end);
+            eventHolder[0].removeEventListener('pinchstart', pinch.start);
+            eventHolder[0].removeEventListener('pinchdrag', pinch.drag);
+            eventHolder[0].removeEventListener('pinchend', pinch.end);
+            eventHolder[0].removeEventListener('doubletap', doubleTap.recenterPlot);
+        }
+
+        pan = {
+            start: function(e) {
+                presetNavigationState(e, 'pan', gestureState);
+                updateData(e, 'pan', gestureState, navigationState);
+
+                if (useSmartPan) {
+                    var point = getPoint(e, 'pan');
+                    navigationState.initialState = plot.navigationState(point.x, point.y);
+                }
+            },
+
+            drag: function(e) {
+                presetNavigationState(e, 'pan', gestureState);
+
+                if (useSmartPan) {
+                    var point = getPoint(e, 'pan');
+                    plot.smartPan({
+                        x: navigationState.initialState.startPageX - point.x,
+                        y: navigationState.initialState.startPageY - point.y
+                    }, navigationState.initialState, navigationState.touchedAxis, false, smartPanLock);
+                } else if (useManualPan) {
+                    plot.pan({
+                        left: -delta(e, 'pan', gestureState).x,
+                        top: -delta(e, 'pan', gestureState).y,
+                        axes: navigationState.touchedAxis
+                    });
+                    updatePrevPanPosition(e, 'pan', gestureState, navigationState);
+                }
+            },
+
+            end: function(e) {
+                presetNavigationState(e, 'pan', gestureState);
+
+                if (useSmartPan) {
+                    plot.smartPan.end();
+                }
+
+                if (wasPinchEvent(e, gestureState)) {
+                    updateprevPanPosition(e, 'pan', gestureState, navigationState);
+                }
+            }
+        };
+
+        var pinchDragTimeout;
+        pinch = {
+            start: function(e) {
+                if (pinchDragTimeout) {
+                    clearTimeout(pinchDragTimeout);
+                    pinchDragTimeout = null;
+                }
+                presetNavigationState(e, 'pinch', gestureState);
+                setPrevDistance(e, gestureState);
+                updateData(e, 'pinch', gestureState, navigationState);
+            },
+
+            drag: function(e) {
+                if (pinchDragTimeout) {
+                    return;
+                }
+                pinchDragTimeout = setTimeout(function() {
+                    presetNavigationState(e, 'pinch', gestureState);
+                    plot.pan({
+                        left: -delta(e, 'pinch', gestureState).x,
+                        top: -delta(e, 'pinch', gestureState).y,
+                        axes: navigationState.touchedAxis
+                    });
+                    updatePrevPanPosition(e, 'pinch', gestureState, navigationState);
+
+                    var dist = pinchDistance(e);
+
+                    if (gestureState.zoomEnable || Math.abs(dist - gestureState.prevDistance) > ZOOM_DISTANCE_MARGIN) {
+                        zoomPlot(plot, e, gestureState, navigationState);
+
+                        //activate zoom mode
+                        gestureState.zoomEnable = true;
+                    }
+                    pinchDragTimeout = null;
+                }, 1000 / 60);
+            },
+
+            end: function(e) {
+                if (pinchDragTimeout) {
+                    clearTimeout(pinchDragTimeout);
+                    pinchDragTimeout = null;
+                }
+                presetNavigationState(e, 'pinch', gestureState);
+                gestureState.prevDistance = null;
+            }
+        };
+
+        doubleTap = {
+            recenterPlot: function(e) {
+                if (e && e.detail && e.detail.type === 'touchstart') {
+                    // only do not recenter for touch start;
+                    recenterPlotOnDoubleTap(plot, e, gestureState, navigationState);
+                }
+            }
+        };
+
+        if (options.pan.enableTouch === true || options.zoom.enableTouch === true) {
+            plot.hooks.bindEvents.push(bindEvents);
+            plot.hooks.shutdown.push(shutdown);
+        }
+
+        function presetNavigationState(e, gesture, gestureState) {
+            navigationState.touchedAxis = getAxis(plot, e, gesture, navigationState);
+            if (noAxisTouched(navigationState)) {
+                navigationState.navigationConstraint = 'unconstrained';
+            } else {
+                navigationState.navigationConstraint = 'axisConstrained';
+            }
+        }
+    }
+
+    $.plot.plugins.push({
+        init: init,
+        options: options,
+        name: 'navigateTouch',
+        version: '0.3'
+    });
+
+    function recenterPlotOnDoubleTap(plot, e, gestureState, navigationState) {
+        checkAxesForDoubleTap(plot, e, navigationState);
+        if ((navigationState.currentTouchedAxis === 'x' && navigationState.prevTouchedAxis === 'x') ||
+            (navigationState.currentTouchedAxis === 'y' && navigationState.prevTouchedAxis === 'y') ||
+            (navigationState.currentTouchedAxis === 'none' && navigationState.prevTouchedAxis === 'none')) {
+            var event;
+
+            plot.recenter({ axes: navigationState.touchedAxis });
+
+            if (navigationState.touchedAxis) {
+                event = new $.Event('re-center', { detail: { axisTouched: navigationState.touchedAxis } });
+            } else {
+                event = new $.Event('re-center', { detail: e });
+            }
+            plot.getPlaceholder().trigger(event);
+        }
+    }
+
+    function checkAxesForDoubleTap(plot, e, navigationState) {
+        var axis = plot.getTouchedAxis(e.detail.firstTouch.x, e.detail.firstTouch.y);
+        if (axis[0] !== undefined) {
+            navigationState.prevTouchedAxis = axis[0].direction;
+        }
+
+        axis = plot.getTouchedAxis(e.detail.secondTouch.x, e.detail.secondTouch.y);
+        if (axis[0] !== undefined) {
+            navigationState.touchedAxis = axis;
+            navigationState.currentTouchedAxis = axis[0].direction;
+        }
+
+        if (noAxisTouched(navigationState)) {
+            navigationState.touchedAxis = null;
+            navigationState.prevTouchedAxis = 'none';
+            navigationState.currentTouchedAxis = 'none';
+        }
+    }
+
+    function zoomPlot(plot, e, gestureState, navigationState) {
+        var offset = plot.offset(),
+            center = {
+                left: 0,
+                top: 0
+            },
+            zoomAmount = pinchDistance(e) / gestureState.prevDistance,
+            dist = pinchDistance(e);
+
+        center.left = getPoint(e, 'pinch').x - offset.left;
+        center.top = getPoint(e, 'pinch').y - offset.top;
+
+        // send the computed touched axis to the zoom function so that it only zooms on that one
+        plot.zoom({
+            center: center,
+            amount: zoomAmount,
+            axes: navigationState.touchedAxis
+        });
+        gestureState.prevDistance = dist;
+    }
+
+    function wasPinchEvent(e, gestureState) {
+        return (gestureState.zoomEnable && e.detail.touches.length === 1);
+    }
+
+    function getAxis(plot, e, gesture, navigationState) {
+        if (e.type === 'pinchstart') {
+            var axisTouch1 = plot.getTouchedAxis(e.detail.touches[0].pageX, e.detail.touches[0].pageY);
+            var axisTouch2 = plot.getTouchedAxis(e.detail.touches[1].pageX, e.detail.touches[1].pageY);
+
+            if (axisTouch1.length === axisTouch2.length && axisTouch1.toString() === axisTouch2.toString()) {
+                return axisTouch1;
+            }
+        } else if (e.type === 'panstart') {
+            return plot.getTouchedAxis(e.detail.touches[0].pageX, e.detail.touches[0].pageY);
+        } else if (e.type === 'pinchend') {
+            //update axis since instead on pinch, a pan event is made
+            return plot.getTouchedAxis(e.detail.touches[0].pageX, e.detail.touches[0].pageY);
+        } else {
+            return navigationState.touchedAxis;
+        }
+    }
+
+    function noAxisTouched(navigationState) {
+        return (!navigationState.touchedAxis || navigationState.touchedAxis.length === 0);
+    }
+
+    function setPrevDistance(e, gestureState) {
+        gestureState.prevDistance = pinchDistance(e);
+    }
+
+    function updateData(e, gesture, gestureState, navigationState) {
+        var axisDir,
+            point = getPoint(e, gesture);
+
+        switch (navigationState.navigationConstraint) {
+            case 'unconstrained':
+                navigationState.touchedAxis = null;
+                gestureState.prevTapPosition = {
+                    x: gestureState.prevPanPosition.x,
+                    y: gestureState.prevPanPosition.y
+                };
+                gestureState.prevPanPosition = {
+                    x: point.x,
+                    y: point.y
+                };
+                break;
+            case 'axisConstrained':
+                axisDir = navigationState.touchedAxis[0].direction;
+                navigationState.currentTouchedAxis = axisDir;
+                gestureState.prevTapPosition[axisDir] = gestureState.prevPanPosition[axisDir];
+                gestureState.prevPanPosition[axisDir] = point[axisDir];
+                break;
+            default:
+                break;
+        }
+    }
+
+    function distance(x1, y1, x2, y2) {
+        return Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
+    }
+
+    function pinchDistance(e) {
+        var t1 = e.detail.touches[0],
+            t2 = e.detail.touches[1];
+        return distance(t1.pageX, t1.pageY, t2.pageX, t2.pageY);
+    }
+
+    function updatePrevPanPosition(e, gesture, gestureState, navigationState) {
+        var point = getPoint(e, gesture);
+
+        switch (navigationState.navigationConstraint) {
+            case 'unconstrained':
+                gestureState.prevPanPosition.x = point.x;
+                gestureState.prevPanPosition.y = point.y;
+                break;
+            case 'axisConstrained':
+                gestureState.prevPanPosition[navigationState.currentTouchedAxis] =
+                point[navigationState.currentTouchedAxis];
+                break;
+            default:
+                break;
+        }
+    }
+
+    function delta(e, gesture, gestureState) {
+        var point = getPoint(e, gesture);
+
+        return {
+            x: point.x - gestureState.prevPanPosition.x,
+            y: point.y - gestureState.prevPanPosition.y
+        }
+    }
+
+    function getPoint(e, gesture) {
+        if (gesture === 'pinch') {
+            return {
+                x: (e.detail.touches[0].pageX + e.detail.touches[1].pageX) / 2,
+                y: (e.detail.touches[0].pageY + e.detail.touches[1].pageY) / 2
+            }
+        } else {
+            return {
+                x: e.detail.touches[0].pageX,
+                y: e.detail.touches[0].pageY
+            }
+        }
+    }
+})(jQuery);

frontend/lib/flot/jquery.flot.uiConstants.js

@@ -0,0 +1,10 @@
+(function ($) {
+    'use strict';
+    $.plot.uiConstants = {
+        SNAPPING_CONSTANT: 20,
+        PANHINT_LENGTH_CONSTANT: 10,
+        MINOR_TICKS_COUNT_CONSTANT: 4,
+        TICK_LENGTH_CONSTANT: 10,
+        ZOOM_DISTANCE_MARGIN: 25
+    };
+})(jQuery);

frontend/stylesheet.css

@@ -1,3 +1,8 @@
+body {
+  background: rgb(2,0,36);
+  background: linear-gradient(138deg, rgba(2,0,36,1) 0%, rgba(5,5,209,1) 51%, rgba(0,212,255,1) 100%);
+  color: white;
+}
 #A {
   background-color: #7e00db;
   color: white;
@@ -54,3 +59,11 @@
   background-color: #8d0000;
   color: white;
 }
+
+.table-secondary {
+  color: black;
+}
+
+.flot-tick-label {
+  fill: white;
+}

mkdocs.yml

@@ -1,6 +1,9 @@
 site_name: TeraHz Documentation
 theme: readthedocs
 nav:
-  - Start page: 'index.md'
+- Start page: 'index.md'
+- Advanced guides:
   - Build guide: 'build.md'
-  - Development-stable dependencies: 'dependencies.md'
+  - Developer's guide: 'dev-guide.md'
+  - Electrical connections: 'electrical.md'
+  - Latest dependencies: 'dependencies.md'

utils/venv/bin/activate

@@ -0,0 +1,76 @@
+# This file must be used with "source bin/activate" *from bash*
+# you cannot run it directly
+
+deactivate () {
+    # reset old environment variables
+    if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
+        PATH="${_OLD_VIRTUAL_PATH:-}"
+        export PATH
+        unset _OLD_VIRTUAL_PATH
+    fi
+    if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
+        PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
+        export PYTHONHOME
+        unset _OLD_VIRTUAL_PYTHONHOME
+    fi
+
+    # This should detect bash and zsh, which have a hash command that must
+    # be called to get it to forget past commands.  Without forgetting
+    # past commands the $PATH changes we made may not be respected
+    if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
+        hash -r
+    fi
+
+    if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
+        PS1="${_OLD_VIRTUAL_PS1:-}"
+        export PS1
+        unset _OLD_VIRTUAL_PS1
+    fi
+
+    unset VIRTUAL_ENV
+    if [ ! "$1" = "nondestructive" ] ; then
+    # Self destruct!
+        unset -f deactivate
+    fi
+}
+
+# unset irrelevant variables
+deactivate nondestructive
+
+VIRTUAL_ENV="/root/projekti/TeraHz/utils/venv"
+export VIRTUAL_ENV
+
+_OLD_VIRTUAL_PATH="$PATH"
+PATH="$VIRTUAL_ENV/bin:$PATH"
+export PATH
+
+# unset PYTHONHOME if set
+# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
+# could use `if (set -u; : $PYTHONHOME) ;` in bash
+if [ -n "${PYTHONHOME:-}" ] ; then
+    _OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
+    unset PYTHONHOME
+fi
+
+if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
+    _OLD_VIRTUAL_PS1="${PS1:-}"
+    if [ "x(venv) " != x ] ; then
+	PS1="(venv) ${PS1:-}"
+    else
+    if [ "`basename \"$VIRTUAL_ENV\"`" = "__" ] ; then
+        # special case for Aspen magic directories
+        # see http://www.zetadev.com/software/aspen/
+        PS1="[`basename \`dirname \"$VIRTUAL_ENV\"\``] $PS1"
+    else
+        PS1="(`basename \"$VIRTUAL_ENV\"`)$PS1"
+    fi
+    fi
+    export PS1
+fi
+
+# This should detect bash and zsh, which have a hash command that must
+# be called to get it to forget past commands.  Without forgetting
+# past commands the $PATH changes we made may not be respected
+if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
+    hash -r
+fi

utils/venv/bin/activate.csh

@@ -0,0 +1,37 @@
+# This file must be used with "source bin/activate.csh" *from csh*.
+# You cannot run it directly.
+# Created by Davide Di Blasi <davidedb@gmail.com>.
+# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
+
+alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; test "\!:*" != "nondestructive" && unalias deactivate'
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+setenv VIRTUAL_ENV "/root/projekti/TeraHz/utils/venv"
+
+set _OLD_VIRTUAL_PATH="$PATH"
+setenv PATH "$VIRTUAL_ENV/bin:$PATH"
+
+
+set _OLD_VIRTUAL_PROMPT="$prompt"
+
+if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
+    if ("venv" != "") then
+        set env_name = "venv"
+    else
+        if (`basename "VIRTUAL_ENV"` == "__") then
+            # special case for Aspen magic directories
+            # see http://www.zetadev.com/software/aspen/
+            set env_name = `basename \`dirname "$VIRTUAL_ENV"\``
+        else
+            set env_name = `basename "$VIRTUAL_ENV"`
+        endif
+    endif
+    set prompt = "[$env_name] $prompt"
+    unset env_name
+endif
+
+alias pydoc python -m pydoc
+
+rehash

utils/venv/bin/activate.fish

@@ -0,0 +1,75 @@
+# This file must be used with ". bin/activate.fish" *from fish* (http://fishshell.org)
+# you cannot run it directly
+
+function deactivate  -d "Exit virtualenv and return to normal shell environment"
+    # reset old environment variables
+    if test -n "$_OLD_VIRTUAL_PATH"
+        set -gx PATH $_OLD_VIRTUAL_PATH
+        set -e _OLD_VIRTUAL_PATH
+    end
+    if test -n "$_OLD_VIRTUAL_PYTHONHOME"
+        set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
+        set -e _OLD_VIRTUAL_PYTHONHOME
+    end
+
+    if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
+        functions -e fish_prompt
+        set -e _OLD_FISH_PROMPT_OVERRIDE
+        functions -c _old_fish_prompt fish_prompt
+        functions -e _old_fish_prompt
+    end
+
+    set -e VIRTUAL_ENV
+    if test "$argv[1]" != "nondestructive"
+        # Self destruct!
+        functions -e deactivate
+    end
+end
+
+# unset irrelevant variables
+deactivate nondestructive
+
+set -gx VIRTUAL_ENV "/root/projekti/TeraHz/utils/venv"
+
+set -gx _OLD_VIRTUAL_PATH $PATH
+set -gx PATH "$VIRTUAL_ENV/bin" $PATH
+
+# unset PYTHONHOME if set
+if set -q PYTHONHOME
+    set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
+    set -e PYTHONHOME
+end
+
+if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
+    # fish uses a function instead of an env var to generate the prompt.
+
+    # save the current fish_prompt function as the function _old_fish_prompt
+    functions -c fish_prompt _old_fish_prompt
+
+    # with the original prompt function renamed, we can override with our own.
+    function fish_prompt
+        # Save the return status of the last command
+        set -l old_status $status
+
+        # Prompt override?
+        if test -n "(venv) "            
+            printf "%s%s" "(venv) " (set_color normal)
+        else
+            # ...Otherwise, prepend env
+            set -l _checkbase (basename "$VIRTUAL_ENV")
+            if test $_checkbase = "__"
+                # special case for Aspen magic directories
+                # see http://www.zetadev.com/software/aspen/
+                printf "%s[%s]%s " (set_color -b blue white) (basename (dirname "$VIRTUAL_ENV")) (set_color normal)
+            else
+                printf "%s(%s)%s" (set_color -b blue white) (basename "$VIRTUAL_ENV") (set_color normal)
+            end
+        end
+
+        # Restore the return status of the previous command.
+        echo "exit $old_status" | .
+        _old_fish_prompt
+    end
+
+    set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
+end

utils/venv/bin/easy_install

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from setuptools.command.easy_install import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/bin/easy_install-3.6

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from setuptools.command.easy_install import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/bin/f2py

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from numpy.f2py.f2py2e import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/bin/f2py3

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from numpy.f2py.f2py2e import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/bin/f2py3.6

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from numpy.f2py.f2py2e import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/bin/miniterm.py

@@ -0,0 +1,976 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+#
+# Very simple serial terminal
+#
+# This file is part of pySerial. https://github.com/pyserial/pyserial
+# (C)2002-2015 Chris Liechti <cliechti@gmx.net>
+#
+# SPDX-License-Identifier:    BSD-3-Clause
+
+import codecs
+import os
+import sys
+import threading
+
+import serial
+from serial.tools.list_ports import comports
+from serial.tools import hexlify_codec
+
+# pylint: disable=wrong-import-order,wrong-import-position
+
+codecs.register(lambda c: hexlify_codec.getregentry() if c == 'hexlify' else None)
+
+try:
+    raw_input
+except NameError:
+    # pylint: disable=redefined-builtin,invalid-name
+    raw_input = input   # in python3 it's "raw"
+    unichr = chr
+
+
+def key_description(character):
+    """generate a readable description for a key"""
+    ascii_code = ord(character)
+    if ascii_code < 32:
+        return 'Ctrl+{:c}'.format(ord('@') + ascii_code)
+    else:
+        return repr(character)
+
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+class ConsoleBase(object):
+    """OS abstraction for console (input/output codec, no echo)"""
+
+    def __init__(self):
+        if sys.version_info >= (3, 0):
+            self.byte_output = sys.stdout.buffer
+        else:
+            self.byte_output = sys.stdout
+        self.output = sys.stdout
+
+    def setup(self):
+        """Set console to read single characters, no echo"""
+
+    def cleanup(self):
+        """Restore default console settings"""
+
+    def getkey(self):
+        """Read a single key from the console"""
+        return None
+
+    def write_bytes(self, byte_string):
+        """Write bytes (already encoded)"""
+        self.byte_output.write(byte_string)
+        self.byte_output.flush()
+
+    def write(self, text):
+        """Write string"""
+        self.output.write(text)
+        self.output.flush()
+
+    def cancel(self):
+        """Cancel getkey operation"""
+
+    #  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
+    # context manager:
+    # switch terminal temporary to normal mode (e.g. to get user input)
+
+    def __enter__(self):
+        self.cleanup()
+        return self
+
+    def __exit__(self, *args, **kwargs):
+        self.setup()
+
+
+if os.name == 'nt':  # noqa
+    import msvcrt
+    import ctypes
+
+    class Out(object):
+        """file-like wrapper that uses os.write"""
+
+        def __init__(self, fd):
+            self.fd = fd
+
+        def flush(self):
+            pass
+
+        def write(self, s):
+            os.write(self.fd, s)
+
+    class Console(ConsoleBase):
+        def __init__(self):
+            super(Console, self).__init__()
+            self._saved_ocp = ctypes.windll.kernel32.GetConsoleOutputCP()
+            self._saved_icp = ctypes.windll.kernel32.GetConsoleCP()
+            ctypes.windll.kernel32.SetConsoleOutputCP(65001)
+            ctypes.windll.kernel32.SetConsoleCP(65001)
+            self.output = codecs.getwriter('UTF-8')(Out(sys.stdout.fileno()), 'replace')
+            # the change of the code page is not propagated to Python, manually fix it
+            sys.stderr = codecs.getwriter('UTF-8')(Out(sys.stderr.fileno()), 'replace')
+            sys.stdout = self.output
+            self.output.encoding = 'UTF-8'  # needed for input
+
+        def __del__(self):
+            ctypes.windll.kernel32.SetConsoleOutputCP(self._saved_ocp)
+            ctypes.windll.kernel32.SetConsoleCP(self._saved_icp)
+
+        def getkey(self):
+            while True:
+                z = msvcrt.getwch()
+                if z == unichr(13):
+                    return unichr(10)
+                elif z in (unichr(0), unichr(0x0e)):    # functions keys, ignore
+                    msvcrt.getwch()
+                else:
+                    return z
+
+        def cancel(self):
+            # CancelIo, CancelSynchronousIo do not seem to work when using
+            # getwch, so instead, send a key to the window with the console
+            hwnd = ctypes.windll.kernel32.GetConsoleWindow()
+            ctypes.windll.user32.PostMessageA(hwnd, 0x100, 0x0d, 0)
+
+elif os.name == 'posix':
+    import atexit
+    import termios
+    import fcntl
+
+    class Console(ConsoleBase):
+        def __init__(self):
+            super(Console, self).__init__()
+            self.fd = sys.stdin.fileno()
+            self.old = termios.tcgetattr(self.fd)
+            atexit.register(self.cleanup)
+            if sys.version_info < (3, 0):
+                self.enc_stdin = codecs.getreader(sys.stdin.encoding)(sys.stdin)
+            else:
+                self.enc_stdin = sys.stdin
+
+        def setup(self):
+            new = termios.tcgetattr(self.fd)
+            new[3] = new[3] & ~termios.ICANON & ~termios.ECHO & ~termios.ISIG
+            new[6][termios.VMIN] = 1
+            new[6][termios.VTIME] = 0
+            termios.tcsetattr(self.fd, termios.TCSANOW, new)
+
+        def getkey(self):
+            c = self.enc_stdin.read(1)
+            if c == unichr(0x7f):
+                c = unichr(8)    # map the BS key (which yields DEL) to backspace
+            return c
+
+        def cancel(self):
+            fcntl.ioctl(self.fd, termios.TIOCSTI, b'\0')
+
+        def cleanup(self):
+            termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old)
+
+else:
+    raise NotImplementedError(
+        'Sorry no implementation for your platform ({}) available.'.format(sys.platform))
+
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+class Transform(object):
+    """do-nothing: forward all data unchanged"""
+    def rx(self, text):
+        """text received from serial port"""
+        return text
+
+    def tx(self, text):
+        """text to be sent to serial port"""
+        return text
+
+    def echo(self, text):
+        """text to be sent but displayed on console"""
+        return text
+
+
+class CRLF(Transform):
+    """ENTER sends CR+LF"""
+
+    def tx(self, text):
+        return text.replace('\n', '\r\n')
+
+
+class CR(Transform):
+    """ENTER sends CR"""
+
+    def rx(self, text):
+        return text.replace('\r', '\n')
+
+    def tx(self, text):
+        return text.replace('\n', '\r')
+
+
+class LF(Transform):
+    """ENTER sends LF"""
+
+
+class NoTerminal(Transform):
+    """remove typical terminal control codes from input"""
+
+    REPLACEMENT_MAP = dict((x, 0x2400 + x) for x in range(32) if unichr(x) not in '\r\n\b\t')
+    REPLACEMENT_MAP.update(
+        {
+            0x7F: 0x2421,  # DEL
+            0x9B: 0x2425,  # CSI
+        })
+
+    def rx(self, text):
+        return text.translate(self.REPLACEMENT_MAP)
+
+    echo = rx
+
+
+class NoControls(NoTerminal):
+    """Remove all control codes, incl. CR+LF"""
+
+    REPLACEMENT_MAP = dict((x, 0x2400 + x) for x in range(32))
+    REPLACEMENT_MAP.update(
+        {
+            0x20: 0x2423,  # visual space
+            0x7F: 0x2421,  # DEL
+            0x9B: 0x2425,  # CSI
+        })
+
+
+class Printable(Transform):
+    """Show decimal code for all non-ASCII characters and replace most control codes"""
+
+    def rx(self, text):
+        r = []
+        for c in text:
+            if ' ' <= c < '\x7f' or c in '\r\n\b\t':
+                r.append(c)
+            elif c < ' ':
+                r.append(unichr(0x2400 + ord(c)))
+            else:
+                r.extend(unichr(0x2080 + ord(d) - 48) for d in '{:d}'.format(ord(c)))
+                r.append(' ')
+        return ''.join(r)
+
+    echo = rx
+
+
+class Colorize(Transform):
+    """Apply different colors for received and echo"""
+
+    def __init__(self):
+        # XXX make it configurable, use colorama?
+        self.input_color = '\x1b[37m'
+        self.echo_color = '\x1b[31m'
+
+    def rx(self, text):
+        return self.input_color + text
+
+    def echo(self, text):
+        return self.echo_color + text
+
+
+class DebugIO(Transform):
+    """Print what is sent and received"""
+
+    def rx(self, text):
+        sys.stderr.write(' [RX:{}] '.format(repr(text)))
+        sys.stderr.flush()
+        return text
+
+    def tx(self, text):
+        sys.stderr.write(' [TX:{}] '.format(repr(text)))
+        sys.stderr.flush()
+        return text
+
+
+# other ideas:
+# - add date/time for each newline
+# - insert newline after: a) timeout b) packet end character
+
+EOL_TRANSFORMATIONS = {
+    'crlf': CRLF,
+    'cr': CR,
+    'lf': LF,
+}
+
+TRANSFORMATIONS = {
+    'direct': Transform,    # no transformation
+    'default': NoTerminal,
+    'nocontrol': NoControls,
+    'printable': Printable,
+    'colorize': Colorize,
+    'debug': DebugIO,
+}
+
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+def ask_for_port():
+    """\
+    Show a list of ports and ask the user for a choice. To make selection
+    easier on systems with long device names, also allow the input of an
+    index.
+    """
+    sys.stderr.write('\n--- Available ports:\n')
+    ports = []
+    for n, (port, desc, hwid) in enumerate(sorted(comports()), 1):
+        sys.stderr.write('--- {:2}: {:20} {!r}\n'.format(n, port, desc))
+        ports.append(port)
+    while True:
+        port = raw_input('--- Enter port index or full name: ')
+        try:
+            index = int(port) - 1
+            if not 0 <= index < len(ports):
+                sys.stderr.write('--- Invalid index!\n')
+                continue
+        except ValueError:
+            pass
+        else:
+            port = ports[index]
+        return port
+
+
+class Miniterm(object):
+    """\
+    Terminal application. Copy data from serial port to console and vice versa.
+    Handle special keys from the console to show menu etc.
+    """
+
+    def __init__(self, serial_instance, echo=False, eol='crlf', filters=()):
+        self.console = Console()
+        self.serial = serial_instance
+        self.echo = echo
+        self.raw = False
+        self.input_encoding = 'UTF-8'
+        self.output_encoding = 'UTF-8'
+        self.eol = eol
+        self.filters = filters
+        self.update_transformations()
+        self.exit_character = 0x1d  # GS/CTRL+]
+        self.menu_character = 0x14  # Menu: CTRL+T
+        self.alive = None
+        self._reader_alive = None
+        self.receiver_thread = None
+        self.rx_decoder = None
+        self.tx_decoder = None
+
+    def _start_reader(self):
+        """Start reader thread"""
+        self._reader_alive = True
+        # start serial->console thread
+        self.receiver_thread = threading.Thread(target=self.reader, name='rx')
+        self.receiver_thread.daemon = True
+        self.receiver_thread.start()
+
+    def _stop_reader(self):
+        """Stop reader thread only, wait for clean exit of thread"""
+        self._reader_alive = False
+        if hasattr(self.serial, 'cancel_read'):
+            self.serial.cancel_read()
+        self.receiver_thread.join()
+
+    def start(self):
+        """start worker threads"""
+        self.alive = True
+        self._start_reader()
+        # enter console->serial loop
+        self.transmitter_thread = threading.Thread(target=self.writer, name='tx')
+        self.transmitter_thread.daemon = True
+        self.transmitter_thread.start()
+        self.console.setup()
+
+    def stop(self):
+        """set flag to stop worker threads"""
+        self.alive = False
+
+    def join(self, transmit_only=False):
+        """wait for worker threads to terminate"""
+        self.transmitter_thread.join()
+        if not transmit_only:
+            if hasattr(self.serial, 'cancel_read'):
+                self.serial.cancel_read()
+            self.receiver_thread.join()
+
+    def close(self):
+        self.serial.close()
+
+    def update_transformations(self):
+        """take list of transformation classes and instantiate them for rx and tx"""
+        transformations = [EOL_TRANSFORMATIONS[self.eol]] + [TRANSFORMATIONS[f]
+                                                             for f in self.filters]
+        self.tx_transformations = [t() for t in transformations]
+        self.rx_transformations = list(reversed(self.tx_transformations))
+
+    def set_rx_encoding(self, encoding, errors='replace'):
+        """set encoding for received data"""
+        self.input_encoding = encoding
+        self.rx_decoder = codecs.getincrementaldecoder(encoding)(errors)
+
+    def set_tx_encoding(self, encoding, errors='replace'):
+        """set encoding for transmitted data"""
+        self.output_encoding = encoding
+        self.tx_encoder = codecs.getincrementalencoder(encoding)(errors)
+
+    def dump_port_settings(self):
+        """Write current settings to sys.stderr"""
+        sys.stderr.write("\n--- Settings: {p.name}  {p.baudrate},{p.bytesize},{p.parity},{p.stopbits}\n".format(
+            p=self.serial))
+        sys.stderr.write('--- RTS: {:8}  DTR: {:8}  BREAK: {:8}\n'.format(
+            ('active' if self.serial.rts else 'inactive'),
+            ('active' if self.serial.dtr else 'inactive'),
+            ('active' if self.serial.break_condition else 'inactive')))
+        try:
+            sys.stderr.write('--- CTS: {:8}  DSR: {:8}  RI: {:8}  CD: {:8}\n'.format(
+                ('active' if self.serial.cts else 'inactive'),
+                ('active' if self.serial.dsr else 'inactive'),
+                ('active' if self.serial.ri else 'inactive'),
+                ('active' if self.serial.cd else 'inactive')))
+        except serial.SerialException:
+            # on RFC 2217 ports, it can happen if no modem state notification was
+            # yet received. ignore this error.
+            pass
+        sys.stderr.write('--- software flow control: {}\n'.format('active' if self.serial.xonxoff else 'inactive'))
+        sys.stderr.write('--- hardware flow control: {}\n'.format('active' if self.serial.rtscts else 'inactive'))
+        sys.stderr.write('--- serial input encoding: {}\n'.format(self.input_encoding))
+        sys.stderr.write('--- serial output encoding: {}\n'.format(self.output_encoding))
+        sys.stderr.write('--- EOL: {}\n'.format(self.eol.upper()))
+        sys.stderr.write('--- filters: {}\n'.format(' '.join(self.filters)))
+
+    def reader(self):
+        """loop and copy serial->console"""
+        try:
+            while self.alive and self._reader_alive:
+                # read all that is there or wait for one byte
+                data = self.serial.read(self.serial.in_waiting or 1)
+                if data:
+                    if self.raw:
+                        self.console.write_bytes(data)
+                    else:
+                        text = self.rx_decoder.decode(data)
+                        for transformation in self.rx_transformations:
+                            text = transformation.rx(text)
+                        self.console.write(text)
+        except serial.SerialException:
+            self.alive = False
+            self.console.cancel()
+            raise       # XXX handle instead of re-raise?
+
+    def writer(self):
+        """\
+        Loop and copy console->serial until self.exit_character character is
+        found. When self.menu_character is found, interpret the next key
+        locally.
+        """
+        menu_active = False
+        try:
+            while self.alive:
+                try:
+                    c = self.console.getkey()
+                except KeyboardInterrupt:
+                    c = '\x03'
+                if not self.alive:
+                    break
+                if menu_active:
+                    self.handle_menu_key(c)
+                    menu_active = False
+                elif c == self.menu_character:
+                    menu_active = True      # next char will be for menu
+                elif c == self.exit_character:
+                    self.stop()             # exit app
+                    break
+                else:
+                    #~ if self.raw:
+                    text = c
+                    for transformation in self.tx_transformations:
+                        text = transformation.tx(text)
+                    self.serial.write(self.tx_encoder.encode(text))
+                    if self.echo:
+                        echo_text = c
+                        for transformation in self.tx_transformations:
+                            echo_text = transformation.echo(echo_text)
+                        self.console.write(echo_text)
+        except:
+            self.alive = False
+            raise
+
+    def handle_menu_key(self, c):
+        """Implement a simple menu / settings"""
+        if c == self.menu_character or c == self.exit_character:
+            # Menu/exit character again -> send itself
+            self.serial.write(self.tx_encoder.encode(c))
+            if self.echo:
+                self.console.write(c)
+        elif c == '\x15':                       # CTRL+U -> upload file
+            self.upload_file()
+        elif c in '\x08hH?':                    # CTRL+H, h, H, ? -> Show help
+            sys.stderr.write(self.get_help_text())
+        elif c == '\x12':                       # CTRL+R -> Toggle RTS
+            self.serial.rts = not self.serial.rts
+            sys.stderr.write('--- RTS {} ---\n'.format('active' if self.serial.rts else 'inactive'))
+        elif c == '\x04':                       # CTRL+D -> Toggle DTR
+            self.serial.dtr = not self.serial.dtr
+            sys.stderr.write('--- DTR {} ---\n'.format('active' if self.serial.dtr else 'inactive'))
+        elif c == '\x02':                       # CTRL+B -> toggle BREAK condition
+            self.serial.break_condition = not self.serial.break_condition
+            sys.stderr.write('--- BREAK {} ---\n'.format('active' if self.serial.break_condition else 'inactive'))
+        elif c == '\x05':                       # CTRL+E -> toggle local echo
+            self.echo = not self.echo
+            sys.stderr.write('--- local echo {} ---\n'.format('active' if self.echo else 'inactive'))
+        elif c == '\x06':                       # CTRL+F -> edit filters
+            self.change_filter()
+        elif c == '\x0c':                       # CTRL+L -> EOL mode
+            modes = list(EOL_TRANSFORMATIONS)  # keys
+            eol = modes.index(self.eol) + 1
+            if eol >= len(modes):
+                eol = 0
+            self.eol = modes[eol]
+            sys.stderr.write('--- EOL: {} ---\n'.format(self.eol.upper()))
+            self.update_transformations()
+        elif c == '\x01':                       # CTRL+A -> set encoding
+            self.change_encoding()
+        elif c == '\x09':                       # CTRL+I -> info
+            self.dump_port_settings()
+        #~ elif c == '\x01':                       # CTRL+A -> cycle escape mode
+        #~ elif c == '\x0c':                       # CTRL+L -> cycle linefeed mode
+        elif c in 'pP':                         # P -> change port
+            self.change_port()
+        elif c in 'sS':                         # S -> suspend / open port temporarily
+            self.suspend_port()
+        elif c in 'bB':                         # B -> change baudrate
+            self.change_baudrate()
+        elif c == '8':                          # 8 -> change to 8 bits
+            self.serial.bytesize = serial.EIGHTBITS
+            self.dump_port_settings()
+        elif c == '7':                          # 7 -> change to 8 bits
+            self.serial.bytesize = serial.SEVENBITS
+            self.dump_port_settings()
+        elif c in 'eE':                         # E -> change to even parity
+            self.serial.parity = serial.PARITY_EVEN
+            self.dump_port_settings()
+        elif c in 'oO':                         # O -> change to odd parity
+            self.serial.parity = serial.PARITY_ODD
+            self.dump_port_settings()
+        elif c in 'mM':                         # M -> change to mark parity
+            self.serial.parity = serial.PARITY_MARK
+            self.dump_port_settings()
+        elif c in 'sS':                         # S -> change to space parity
+            self.serial.parity = serial.PARITY_SPACE
+            self.dump_port_settings()
+        elif c in 'nN':                         # N -> change to no parity
+            self.serial.parity = serial.PARITY_NONE
+            self.dump_port_settings()
+        elif c == '1':                          # 1 -> change to 1 stop bits
+            self.serial.stopbits = serial.STOPBITS_ONE
+            self.dump_port_settings()
+        elif c == '2':                          # 2 -> change to 2 stop bits
+            self.serial.stopbits = serial.STOPBITS_TWO
+            self.dump_port_settings()
+        elif c == '3':                          # 3 -> change to 1.5 stop bits
+            self.serial.stopbits = serial.STOPBITS_ONE_POINT_FIVE
+            self.dump_port_settings()
+        elif c in 'xX':                         # X -> change software flow control
+            self.serial.xonxoff = (c == 'X')
+            self.dump_port_settings()
+        elif c in 'rR':                         # R -> change hardware flow control
+            self.serial.rtscts = (c == 'R')
+            self.dump_port_settings()
+        else:
+            sys.stderr.write('--- unknown menu character {} --\n'.format(key_description(c)))
+
+    def upload_file(self):
+        """Ask user for filenname and send its contents"""
+        sys.stderr.write('\n--- File to upload: ')
+        sys.stderr.flush()
+        with self.console:
+            filename = sys.stdin.readline().rstrip('\r\n')
+            if filename:
+                try:
+                    with open(filename, 'rb') as f:
+                        sys.stderr.write('--- Sending file {} ---\n'.format(filename))
+                        while True:
+                            block = f.read(1024)
+                            if not block:
+                                break
+                            self.serial.write(block)
+                            # Wait for output buffer to drain.
+                            self.serial.flush()
+                            sys.stderr.write('.')   # Progress indicator.
+                    sys.stderr.write('\n--- File {} sent ---\n'.format(filename))
+                except IOError as e:
+                    sys.stderr.write('--- ERROR opening file {}: {} ---\n'.format(filename, e))
+
+    def change_filter(self):
+        """change the i/o transformations"""
+        sys.stderr.write('\n--- Available Filters:\n')
+        sys.stderr.write('\n'.join(
+            '---   {:<10} = {.__doc__}'.format(k, v)
+            for k, v in sorted(TRANSFORMATIONS.items())))
+        sys.stderr.write('\n--- Enter new filter name(s) [{}]: '.format(' '.join(self.filters)))
+        with self.console:
+            new_filters = sys.stdin.readline().lower().split()
+        if new_filters:
+            for f in new_filters:
+                if f not in TRANSFORMATIONS:
+                    sys.stderr.write('--- unknown filter: {}\n'.format(repr(f)))
+                    break
+            else:
+                self.filters = new_filters
+                self.update_transformations()
+        sys.stderr.write('--- filters: {}\n'.format(' '.join(self.filters)))
+
+    def change_encoding(self):
+        """change encoding on the serial port"""
+        sys.stderr.write('\n--- Enter new encoding name [{}]: '.format(self.input_encoding))
+        with self.console:
+            new_encoding = sys.stdin.readline().strip()
+        if new_encoding:
+            try:
+                codecs.lookup(new_encoding)
+            except LookupError:
+                sys.stderr.write('--- invalid encoding name: {}\n'.format(new_encoding))
+            else:
+                self.set_rx_encoding(new_encoding)
+                self.set_tx_encoding(new_encoding)
+        sys.stderr.write('--- serial input encoding: {}\n'.format(self.input_encoding))
+        sys.stderr.write('--- serial output encoding: {}\n'.format(self.output_encoding))
+
+    def change_baudrate(self):
+        """change the baudrate"""
+        sys.stderr.write('\n--- Baudrate: ')
+        sys.stderr.flush()
+        with self.console:
+            backup = self.serial.baudrate
+            try:
+                self.serial.baudrate = int(sys.stdin.readline().strip())
+            except ValueError as e:
+                sys.stderr.write('--- ERROR setting baudrate: {} ---\n'.format(e))
+                self.serial.baudrate = backup
+            else:
+                self.dump_port_settings()
+
+    def change_port(self):
+        """Have a conversation with the user to change the serial port"""
+        with self.console:
+            try:
+                port = ask_for_port()
+            except KeyboardInterrupt:
+                port = None
+        if port and port != self.serial.port:
+            # reader thread needs to be shut down
+            self._stop_reader()
+            # save settings
+            settings = self.serial.getSettingsDict()
+            try:
+                new_serial = serial.serial_for_url(port, do_not_open=True)
+                # restore settings and open
+                new_serial.applySettingsDict(settings)
+                new_serial.rts = self.serial.rts
+                new_serial.dtr = self.serial.dtr
+                new_serial.open()
+                new_serial.break_condition = self.serial.break_condition
+            except Exception as e:
+                sys.stderr.write('--- ERROR opening new port: {} ---\n'.format(e))
+                new_serial.close()
+            else:
+                self.serial.close()
+                self.serial = new_serial
+                sys.stderr.write('--- Port changed to: {} ---\n'.format(self.serial.port))
+            # and restart the reader thread
+            self._start_reader()
+
+    def suspend_port(self):
+        """\
+        open port temporarily, allow reconnect, exit and port change to get
+        out of the loop
+        """
+        # reader thread needs to be shut down
+        self._stop_reader()
+        self.serial.close()
+        sys.stderr.write('\n--- Port closed: {} ---\n'.format(self.serial.port))
+        do_change_port = False
+        while not self.serial.is_open:
+            sys.stderr.write('--- Quit: {exit} | p: port change | any other key to reconnect ---\n'.format(
+                exit=key_description(self.exit_character)))
+            k = self.console.getkey()
+            if k == self.exit_character:
+                self.stop()             # exit app
+                break
+            elif k in 'pP':
+                do_change_port = True
+                break
+            try:
+                self.serial.open()
+            except Exception as e:
+                sys.stderr.write('--- ERROR opening port: {} ---\n'.format(e))
+        if do_change_port:
+            self.change_port()
+        else:
+            # and restart the reader thread
+            self._start_reader()
+            sys.stderr.write('--- Port opened: {} ---\n'.format(self.serial.port))
+
+    def get_help_text(self):
+        """return the help text"""
+        # help text, starts with blank line!
+        return """
+--- pySerial ({version}) - miniterm - help
+---
+--- {exit:8} Exit program
+--- {menu:8} Menu escape key, followed by:
+--- Menu keys:
+---    {menu:7} Send the menu character itself to remote
+---    {exit:7} Send the exit character itself to remote
+---    {info:7} Show info
+---    {upload:7} Upload file (prompt will be shown)
+---    {repr:7} encoding
+---    {filter:7} edit filters
+--- Toggles:
+---    {rts:7} RTS   {dtr:7} DTR   {brk:7} BREAK
+---    {echo:7} echo  {eol:7} EOL
+---
+--- Port settings ({menu} followed by the following):
+---    p          change port
+---    7 8        set data bits
+---    N E O S M  change parity (None, Even, Odd, Space, Mark)
+---    1 2 3      set stop bits (1, 2, 1.5)
+---    b          change baud rate
+---    x X        disable/enable software flow control
+---    r R        disable/enable hardware flow control
+""".format(version=getattr(serial, 'VERSION', 'unknown version'),
+           exit=key_description(self.exit_character),
+           menu=key_description(self.menu_character),
+           rts=key_description('\x12'),
+           dtr=key_description('\x04'),
+           brk=key_description('\x02'),
+           echo=key_description('\x05'),
+           info=key_description('\x09'),
+           upload=key_description('\x15'),
+           repr=key_description('\x01'),
+           filter=key_description('\x06'),
+           eol=key_description('\x0c'))
+
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+# default args can be used to override when calling main() from an other script
+# e.g to create a miniterm-my-device.py
+def main(default_port=None, default_baudrate=9600, default_rts=None, default_dtr=None):
+    """Command line tool, entry point"""
+
+    import argparse
+
+    parser = argparse.ArgumentParser(
+        description="Miniterm - A simple terminal program for the serial port.")
+
+    parser.add_argument(
+        "port",
+        nargs='?',
+        help="serial port name ('-' to show port list)",
+        default=default_port)
+
+    parser.add_argument(
+        "baudrate",
+        nargs='?',
+        type=int,
+        help="set baud rate, default: %(default)s",
+        default=default_baudrate)
+
+    group = parser.add_argument_group("port settings")
+
+    group.add_argument(
+        "--parity",
+        choices=['N', 'E', 'O', 'S', 'M'],
+        type=lambda c: c.upper(),
+        help="set parity, one of {N E O S M}, default: N",
+        default='N')
+
+    group.add_argument(
+        "--rtscts",
+        action="store_true",
+        help="enable RTS/CTS flow control (default off)",
+        default=False)
+
+    group.add_argument(
+        "--xonxoff",
+        action="store_true",
+        help="enable software flow control (default off)",
+        default=False)
+
+    group.add_argument(
+        "--rts",
+        type=int,
+        help="set initial RTS line state (possible values: 0, 1)",
+        default=default_rts)
+
+    group.add_argument(
+        "--dtr",
+        type=int,
+        help="set initial DTR line state (possible values: 0, 1)",
+        default=default_dtr)
+
+    group.add_argument(
+        "--ask",
+        action="store_true",
+        help="ask again for port when open fails",
+        default=False)
+
+    group = parser.add_argument_group("data handling")
+
+    group.add_argument(
+        "-e", "--echo",
+        action="store_true",
+        help="enable local echo (default off)",
+        default=False)
+
+    group.add_argument(
+        "--encoding",
+        dest="serial_port_encoding",
+        metavar="CODEC",
+        help="set the encoding for the serial port (e.g. hexlify, Latin1, UTF-8), default: %(default)s",
+        default='UTF-8')
+
+    group.add_argument(
+        "-f", "--filter",
+        action="append",
+        metavar="NAME",
+        help="add text transformation",
+        default=[])
+
+    group.add_argument(
+        "--eol",
+        choices=['CR', 'LF', 'CRLF'],
+        type=lambda c: c.upper(),
+        help="end of line mode",
+        default='CRLF')
+
+    group.add_argument(
+        "--raw",
+        action="store_true",
+        help="Do no apply any encodings/transformations",
+        default=False)
+
+    group = parser.add_argument_group("hotkeys")
+
+    group.add_argument(
+        "--exit-char",
+        type=int,
+        metavar='NUM',
+        help="Unicode of special character that is used to exit the application, default: %(default)s",
+        default=0x1d)  # GS/CTRL+]
+
+    group.add_argument(
+        "--menu-char",
+        type=int,
+        metavar='NUM',
+        help="Unicode code of special character that is used to control miniterm (menu), default: %(default)s",
+        default=0x14)  # Menu: CTRL+T
+
+    group = parser.add_argument_group("diagnostics")
+
+    group.add_argument(
+        "-q", "--quiet",
+        action="store_true",
+        help="suppress non-error messages",
+        default=False)
+
+    group.add_argument(
+        "--develop",
+        action="store_true",
+        help="show Python traceback on error",
+        default=False)
+
+    args = parser.parse_args()
+
+    if args.menu_char == args.exit_char:
+        parser.error('--exit-char can not be the same as --menu-char')
+
+    if args.filter:
+        if 'help' in args.filter:
+            sys.stderr.write('Available filters:\n')
+            sys.stderr.write('\n'.join(
+                '{:<10} = {.__doc__}'.format(k, v)
+                for k, v in sorted(TRANSFORMATIONS.items())))
+            sys.stderr.write('\n')
+            sys.exit(1)
+        filters = args.filter
+    else:
+        filters = ['default']
+
+    while True:
+        # no port given on command line -> ask user now
+        if args.port is None or args.port == '-':
+            try:
+                args.port = ask_for_port()
+            except KeyboardInterrupt:
+                sys.stderr.write('\n')
+                parser.error('user aborted and port is not given')
+            else:
+                if not args.port:
+                    parser.error('port is not given')
+        try:
+            serial_instance = serial.serial_for_url(
+                args.port,
+                args.baudrate,
+                parity=args.parity,
+                rtscts=args.rtscts,
+                xonxoff=args.xonxoff,
+                do_not_open=True)
+
+            if not hasattr(serial_instance, 'cancel_read'):
+                # enable timeout for alive flag polling if cancel_read is not available
+                serial_instance.timeout = 1
+
+            if args.dtr is not None:
+                if not args.quiet:
+                    sys.stderr.write('--- forcing DTR {}\n'.format('active' if args.dtr else 'inactive'))
+                serial_instance.dtr = args.dtr
+            if args.rts is not None:
+                if not args.quiet:
+                    sys.stderr.write('--- forcing RTS {}\n'.format('active' if args.rts else 'inactive'))
+                serial_instance.rts = args.rts
+
+            serial_instance.open()
+        except serial.SerialException as e:
+            sys.stderr.write('could not open port {}: {}\n'.format(repr(args.port), e))
+            if args.develop:
+                raise
+            if not args.ask:
+                sys.exit(1)
+            else:
+                args.port = '-'
+        else:
+            break
+
+    miniterm = Miniterm(
+        serial_instance,
+        echo=args.echo,
+        eol=args.eol.lower(),
+        filters=filters)
+    miniterm.exit_character = unichr(args.exit_char)
+    miniterm.menu_character = unichr(args.menu_char)
+    miniterm.raw = args.raw
+    miniterm.set_rx_encoding(args.serial_port_encoding)
+    miniterm.set_tx_encoding(args.serial_port_encoding)
+
+    if not args.quiet:
+        sys.stderr.write('--- Miniterm on {p.name}  {p.baudrate},{p.bytesize},{p.parity},{p.stopbits} ---\n'.format(
+            p=miniterm.serial))
+        sys.stderr.write('--- Quit: {} | Menu: {} | Help: {} followed by {} ---\n'.format(
+            key_description(miniterm.exit_character),
+            key_description(miniterm.menu_character),
+            key_description(miniterm.menu_character),
+            key_description('\x08')))
+
+    miniterm.start()
+    try:
+        miniterm.join(True)
+    except KeyboardInterrupt:
+        pass
+    if not args.quiet:
+        sys.stderr.write("\n--- exit ---\n")
+    miniterm.join()
+    miniterm.close()
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+if __name__ == '__main__':
+    main()

utils/venv/bin/pip

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from pip._internal import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/bin/pip3

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from pip._internal import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/bin/pip3.6

@@ -0,0 +1,10 @@
+#!/root/projekti/TeraHz/utils/venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+
+from pip._internal import main
+
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

utils/venv/lib/python3.6/site-packages/cycler-0.10.0.dist-info/DESCRIPTION.rst

@@ -0,0 +1,3 @@
+UNKNOWN
+
+

utils/venv/lib/python3.6/site-packages/cycler-0.10.0.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

utils/venv/lib/python3.6/site-packages/cycler-0.10.0.dist-info/METADATA

@@ -0,0 +1,25 @@
+Metadata-Version: 2.0
+Name: cycler
+Version: 0.10.0
+Summary: Composable style cycles
+Home-page: http://github.com/matplotlib/cycler
+Author: Thomas A Caswell
+Author-email: matplotlib-users@python.org
+License: BSD
+Keywords: cycle kwargs
+Platform: Cross platform (Linux
+Platform: Mac OSX
+Platform: Windows)
+Classifier: Development Status :: 4 - Beta
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.6
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Programming Language :: Python :: 3.5
+Requires-Dist: six
+
+UNKNOWN
+
+

utils/venv/lib/python3.6/site-packages/cycler-0.10.0.dist-info/RECORD

@@ -0,0 +1,9 @@
+__pycache__/cycler.cpython-36.pyc,,
+cycler-0.10.0.dist-info/DESCRIPTION.rst,sha256=OCTuuN6LcWulhHS3d5rfjdsQtW22n7HENFRh6jC6ego,10
+cycler-0.10.0.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
+cycler-0.10.0.dist-info/METADATA,sha256=aWX1pyo7D2hSDNZ2Q6Zl7DxhUQdpyu1O5uNABnvz000,722
+cycler-0.10.0.dist-info/RECORD,,
+cycler-0.10.0.dist-info/WHEEL,sha256=o2k-Qa-RMNIJmUdIc7KU6VWR_ErNRbWNlxDIpl7lm34,110
+cycler-0.10.0.dist-info/metadata.json,sha256=CCBpg-KQU-VRL1unJcHPWKQeQbB84G0j7-BeCj7YUbU,875
+cycler-0.10.0.dist-info/top_level.txt,sha256=D8BVVDdAAelLb2FOEz7lDpc6-AL21ylKPrMhtG6yzyE,7
+cycler.py,sha256=ed3G39unvVEBrBZVDwnE0FFroRNsOLkbJ_TwIT5CjCU,15959

utils/venv/lib/python3.6/site-packages/cycler-0.10.0.dist-info/WHEEL

@@ -0,0 +1,6 @@
+Wheel-Version: 1.0
+Generator: bdist_wheel (0.29.0)
+Root-Is-Purelib: true
+Tag: py2-none-any
+Tag: py3-none-any
+

utils/venv/lib/python3.6/site-packages/cycler-0.10.0.dist-info/metadata.json

@@ -0,0 +1 @@
+{"classifiers": ["Development Status :: 4 - Beta", "Programming Language :: Python :: 2", "Programming Language :: Python :: 2.6", "Programming Language :: Python :: 2.7", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.3", "Programming Language :: Python :: 3.4", "Programming Language :: Python :: 3.5"], "extensions": {"python.details": {"contacts": [{"email": "matplotlib-users@python.org", "name": "Thomas A Caswell", "role": "author"}], "document_names": {"description": "DESCRIPTION.rst"}, "project_urls": {"Home": "http://github.com/matplotlib/cycler"}}}, "extras": [], "generator": "bdist_wheel (0.29.0)", "keywords": ["cycle", "kwargs"], "license": "BSD", "metadata_version": "2.0", "name": "cycler", "platform": "Cross platform (Linux", "run_requires": [{"requires": ["six"]}], "summary": "Composable style cycles", "version": "0.10.0"}

utils/venv/lib/python3.6/site-packages/cycler-0.10.0.dist-info/top_level.txt

@@ -0,0 +1 @@
+cycler

utils/venv/lib/python3.6/site-packages/cycler.py

@@ -0,0 +1,558 @@
+"""
+Cycler
+======
+
+Cycling through combinations of values, producing dictionaries.
+
+You can add cyclers::
+
+    from cycler import cycler
+    cc = (cycler(color=list('rgb')) +
+          cycler(linestyle=['-', '--', '-.']))
+    for d in cc:
+        print(d)
+
+Results in::
+
+    {'color': 'r', 'linestyle': '-'}
+    {'color': 'g', 'linestyle': '--'}
+    {'color': 'b', 'linestyle': '-.'}
+
+
+You can multiply cyclers::
+
+    from cycler import cycler
+    cc = (cycler(color=list('rgb')) *
+          cycler(linestyle=['-', '--', '-.']))
+    for d in cc:
+        print(d)
+
+Results in::
+
+    {'color': 'r', 'linestyle': '-'}
+    {'color': 'r', 'linestyle': '--'}
+    {'color': 'r', 'linestyle': '-.'}
+    {'color': 'g', 'linestyle': '-'}
+    {'color': 'g', 'linestyle': '--'}
+    {'color': 'g', 'linestyle': '-.'}
+    {'color': 'b', 'linestyle': '-'}
+    {'color': 'b', 'linestyle': '--'}
+    {'color': 'b', 'linestyle': '-.'}
+"""
+
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+
+import six
+from itertools import product, cycle
+from six.moves import zip, reduce
+from operator import mul, add
+import copy
+
+__version__ = '0.10.0'
+
+
+def _process_keys(left, right):
+    """
+    Helper function to compose cycler keys
+
+    Parameters
+    ----------
+    left, right : iterable of dictionaries or None
+        The cyclers to be composed
+    Returns
+    -------
+    keys : set
+        The keys in the composition of the two cyclers
+    """
+    l_peek = next(iter(left)) if left is not None else {}
+    r_peek = next(iter(right)) if right is not None else {}
+    l_key = set(l_peek.keys())
+    r_key = set(r_peek.keys())
+    if l_key & r_key:
+        raise ValueError("Can not compose overlapping cycles")
+    return l_key | r_key
+
+
+class Cycler(object):
+    """
+    Composable cycles
+
+    This class has compositions methods:
+
+    ``+``
+      for 'inner' products (zip)
+
+    ``+=``
+      in-place ``+``
+
+    ``*``
+      for outer products (itertools.product) and integer multiplication
+
+    ``*=``
+      in-place ``*``
+
+    and supports basic slicing via ``[]``
+
+    Parameters
+    ----------
+    left : Cycler or None
+        The 'left' cycler
+
+    right : Cycler or None
+        The 'right' cycler
+
+    op : func or None
+        Function which composes the 'left' and 'right' cyclers.
+
+    """
+    def __call__(self):
+        return cycle(self)
+
+    def __init__(self, left, right=None, op=None):
+        """Semi-private init
+
+        Do not use this directly, use `cycler` function instead.
+        """
+        if isinstance(left, Cycler):
+            self._left = Cycler(left._left, left._right, left._op)
+        elif left is not None:
+            # Need to copy the dictionary or else that will be a residual
+            # mutable that could lead to strange errors
+            self._left = [copy.copy(v) for v in left]
+        else:
+            self._left = None
+
+        if isinstance(right, Cycler):
+            self._right = Cycler(right._left, right._right, right._op)
+        elif right is not None:
+            # Need to copy the dictionary or else that will be a residual
+            # mutable that could lead to strange errors
+            self._right = [copy.copy(v) for v in right]
+        else:
+            self._right = None
+
+        self._keys = _process_keys(self._left, self._right)
+        self._op = op
+
+    @property
+    def keys(self):
+        """
+        The keys this Cycler knows about
+        """
+        return set(self._keys)
+
+    def change_key(self, old, new):
+        """
+        Change a key in this cycler to a new name.
+        Modification is performed in-place.
+
+        Does nothing if the old key is the same as the new key.
+        Raises a ValueError if the new key is already a key.
+        Raises a KeyError if the old key isn't a key.
+
+        """
+        if old == new:
+            return
+        if new in self._keys:
+            raise ValueError("Can't replace %s with %s, %s is already a key" %
+                             (old, new, new))
+        if old not in self._keys:
+            raise KeyError("Can't replace %s with %s, %s is not a key" %
+                           (old, new, old))
+
+        self._keys.remove(old)
+        self._keys.add(new)
+
+        if self._right is not None and old in self._right.keys:
+            self._right.change_key(old, new)
+
+        # self._left should always be non-None
+        # if self._keys is non-empty.
+        elif isinstance(self._left, Cycler):
+            self._left.change_key(old, new)
+        else:
+            # It should be completely safe at this point to
+            # assume that the old key can be found in each
+            # iteration.
+            self._left = [{new: entry[old]} for entry in self._left]
+
+    def _compose(self):
+        """
+        Compose the 'left' and 'right' components of this cycle
+        with the proper operation (zip or product as of now)
+        """
+        for a, b in self._op(self._left, self._right):
+            out = dict()
+            out.update(a)
+            out.update(b)
+            yield out
+
+    @classmethod
+    def _from_iter(cls, label, itr):
+        """
+        Class method to create 'base' Cycler objects
+        that do not have a 'right' or 'op' and for which
+        the 'left' object is not another Cycler.
+
+        Parameters
+        ----------
+        label : str
+            The property key.
+
+        itr : iterable
+            Finite length iterable of the property values.
+
+        Returns
+        -------
+        cycler : Cycler
+            New 'base' `Cycler`
+        """
+        ret = cls(None)
+        ret._left = list({label: v} for v in itr)
+        ret._keys = set([label])
+        return ret
+
+    def __getitem__(self, key):
+        # TODO : maybe add numpy style fancy slicing
+        if isinstance(key, slice):
+            trans = self.by_key()
+            return reduce(add, (_cycler(k, v[key])
+                                for k, v in six.iteritems(trans)))
+        else:
+            raise ValueError("Can only use slices with Cycler.__getitem__")
+
+    def __iter__(self):
+        if self._right is None:
+            return iter(dict(l) for l in self._left)
+
+        return self._compose()
+
+    def __add__(self, other):
+        """
+        Pair-wise combine two equal length cycles (zip)
+
+        Parameters
+        ----------
+        other : Cycler
+           The second Cycler
+        """
+        if len(self) != len(other):
+            raise ValueError("Can only add equal length cycles, "
+                             "not {0} and {1}".format(len(self), len(other)))
+        return Cycler(self, other, zip)
+
+    def __mul__(self, other):
+        """
+        Outer product of two cycles (`itertools.product`) or integer
+        multiplication.
+
+        Parameters
+        ----------
+        other : Cycler or int
+           The second Cycler or integer
+        """
+        if isinstance(other, Cycler):
+            return Cycler(self, other, product)
+        elif isinstance(other, int):
+            trans = self.by_key()
+            return reduce(add, (_cycler(k, v*other)
+                                for k, v in six.iteritems(trans)))
+        else:
+            return NotImplemented
+
+    def __rmul__(self, other):
+        return self * other
+
+    def __len__(self):
+        op_dict = {zip: min, product: mul}
+        if self._right is None:
+            return len(self._left)
+        l_len = len(self._left)
+        r_len = len(self._right)
+        return op_dict[self._op](l_len, r_len)
+
+    def __iadd__(self, other):
+        """
+        In-place pair-wise combine two equal length cycles (zip)
+
+        Parameters
+        ----------
+        other : Cycler
+           The second Cycler
+        """
+        if not isinstance(other, Cycler):
+            raise TypeError("Cannot += with a non-Cycler object")
+        # True shallow copy of self is fine since this is in-place
+        old_self = copy.copy(self)
+        self._keys = _process_keys(old_self, other)
+        self._left = old_self
+        self._op = zip
+        self._right = Cycler(other._left, other._right, other._op)
+        return self
+
+    def __imul__(self, other):
+        """
+        In-place outer product of two cycles (`itertools.product`)
+
+        Parameters
+        ----------
+        other : Cycler
+           The second Cycler
+        """
+        if not isinstance(other, Cycler):
+            raise TypeError("Cannot *= with a non-Cycler object")
+        # True shallow copy of self is fine since this is in-place
+        old_self = copy.copy(self)
+        self._keys = _process_keys(old_self, other)
+        self._left = old_self
+        self._op = product
+        self._right = Cycler(other._left, other._right, other._op)
+        return self
+
+    def __eq__(self, other):
+        """
+        Check equality
+        """
+        if len(self) != len(other):
+            return False
+        if self.keys ^ other.keys:
+            return False
+
+        return all(a == b for a, b in zip(self, other))
+
+    def __repr__(self):
+        op_map = {zip: '+', product: '*'}
+        if self._right is None:
+            lab = self.keys.pop()
+            itr = list(v[lab] for v in self)
+            return "cycler({lab!r}, {itr!r})".format(lab=lab, itr=itr)
+        else:
+            op = op_map.get(self._op, '?')
+            msg = "({left!r} {op} {right!r})"
+            return msg.format(left=self._left, op=op, right=self._right)
+
+    def _repr_html_(self):
+        # an table showing the value of each key through a full cycle
+        output = "<table>"
+        sorted_keys = sorted(self.keys, key=repr)
+        for key in sorted_keys:
+            output += "<th>{key!r}</th>".format(key=key)
+        for d in iter(self):
+            output += "<tr>"
+            for k in sorted_keys:
+                output += "<td>{val!r}</td>".format(val=d[k])
+            output += "</tr>"
+        output += "</table>"
+        return output
+
+    def by_key(self):
+        """Values by key
+
+        This returns the transposed values of the cycler.  Iterating
+        over a `Cycler` yields dicts with a single value for each key,
+        this method returns a `dict` of `list` which are the values
+        for the given key.
+
+        The returned value can be used to create an equivalent `Cycler`
+        using only `+`.
+
+        Returns
+        -------
+        transpose : dict
+            dict of lists of the values for each key.
+        """
+
+        # TODO : sort out if this is a bottle neck, if there is a better way
+        # and if we care.
+
+        keys = self.keys
+        # change this to dict comprehension when drop 2.6
+        out = dict((k,  list()) for k in keys)
+
+        for d in self:
+            for k in keys:
+                out[k].append(d[k])
+        return out
+
+    # for back compatibility
+    _transpose = by_key
+
+    def simplify(self):
+        """Simplify the Cycler
+
+        Returned as a composition using only sums (no multiplications)
+
+        Returns
+        -------
+        simple : Cycler
+            An equivalent cycler using only summation"""
+        # TODO: sort out if it is worth the effort to make sure this is
+        # balanced.  Currently it is is
+        # (((a + b) + c) + d) vs
+        # ((a + b) + (c + d))
+        # I would believe that there is some performance implications
+
+        trans = self.by_key()
+        return reduce(add, (_cycler(k, v) for k, v in six.iteritems(trans)))
+
+    def concat(self, other):
+        """Concatenate this cycler and an other.
+
+        The keys must match exactly.
+
+        This returns a single Cycler which is equivalent to
+        `itertools.chain(self, other)`
+
+        Examples
+        --------
+
+        >>> num = cycler('a', range(3))
+        >>> let = cycler('a', 'abc')
+        >>> num.concat(let)
+        cycler('a', [0, 1, 2, 'a', 'b', 'c'])
+
+        Parameters
+        ----------
+        other : `Cycler`
+            The `Cycler` to concatenate to this one.
+
+        Returns
+        -------
+        ret : `Cycler`
+            The concatenated `Cycler`
+        """
+        return concat(self, other)
+
+
+def concat(left, right):
+    """Concatenate two cyclers.
+
+    The keys must match exactly.
+
+    This returns a single Cycler which is equivalent to
+    `itertools.chain(left, right)`
+
+    Examples
+    --------
+
+    >>> num = cycler('a', range(3))
+    >>> let = cycler('a', 'abc')
+    >>> num.concat(let)
+    cycler('a', [0, 1, 2, 'a', 'b', 'c'])
+
+    Parameters
+    ----------
+    left, right : `Cycler`
+        The two `Cycler` instances to concatenate
+
+    Returns
+    -------
+    ret : `Cycler`
+        The concatenated `Cycler`
+    """
+    if left.keys != right.keys:
+        msg = '\n\t'.join(["Keys do not match:",
+                           "Intersection: {both!r}",
+                           "Disjoint: {just_one!r}"]).format(
+                               both=left.keys & right.keys,
+                               just_one=left.keys ^ right.keys)
+
+        raise ValueError(msg)
+
+    _l = left.by_key()
+    _r = right.by_key()
+    return reduce(add, (_cycler(k, _l[k] + _r[k]) for k in left.keys))
+
+
+def cycler(*args, **kwargs):
+    """
+    Create a new `Cycler` object from a single positional argument,
+    a pair of positional arguments, or the combination of keyword arguments.
+
+    cycler(arg)
+    cycler(label1=itr1[, label2=iter2[, ...]])
+    cycler(label, itr)
+
+    Form 1 simply copies a given `Cycler` object.
+
+    Form 2 composes a `Cycler` as an inner product of the
+    pairs of keyword arguments. In other words, all of the
+    iterables are cycled simultaneously, as if through zip().
+
+    Form 3 creates a `Cycler` from a label and an iterable.
+    This is useful for when the label cannot be a keyword argument
+    (e.g., an integer or a name that has a space in it).
+
+    Parameters
+    ----------
+    arg : Cycler
+        Copy constructor for Cycler (does a shallow copy of iterables).
+
+    label : name
+        The property key. In the 2-arg form of the function,
+        the label can be any hashable object. In the keyword argument
+        form of the function, it must be a valid python identifier.
+
+    itr : iterable
+        Finite length iterable of the property values.
+        Can be a single-property `Cycler` that would
+        be like a key change, but as a shallow copy.
+
+    Returns
+    -------
+    cycler : Cycler
+        New `Cycler` for the given property
+
+    """
+    if args and kwargs:
+        raise TypeError("cyl() can only accept positional OR keyword "
+                        "arguments -- not both.")
+
+    if len(args) == 1:
+        if not isinstance(args[0], Cycler):
+            raise TypeError("If only one positional argument given, it must "
+                            " be a Cycler instance.")
+        return Cycler(args[0])
+    elif len(args) == 2:
+        return _cycler(*args)
+    elif len(args) > 2:
+        raise TypeError("Only a single Cycler can be accepted as the lone "
+                        "positional argument. Use keyword arguments instead.")
+
+    if kwargs:
+        return reduce(add, (_cycler(k, v) for k, v in six.iteritems(kwargs)))
+
+    raise TypeError("Must have at least a positional OR keyword arguments")
+
+
+def _cycler(label, itr):
+    """
+    Create a new `Cycler` object from a property name and
+    iterable of values.
+
+    Parameters
+    ----------
+    label : hashable
+        The property key.
+
+    itr : iterable
+        Finite length iterable of the property values.
+
+    Returns
+    -------
+    cycler : Cycler
+        New `Cycler` for the given property
+    """
+    if isinstance(itr, Cycler):
+        keys = itr.keys
+        if len(keys) != 1:
+            msg = "Can not create Cycler from a multi-property Cycler"
+            raise ValueError(msg)
+
+        lab = keys.pop()
+        # Doesn't need to be a new list because
+        # _from_iter() will be creating that new list anyway.
+        itr = (v[lab] for v in itr)
+
+    return Cycler._from_iter(label, itr)

utils/venv/lib/python3.6/site-packages/dateutil/__init__.py

@@ -0,0 +1,8 @@
+# -*- coding: utf-8 -*-
+try:
+    from ._version import version as __version__
+except ImportError:
+    __version__ = 'unknown'
+
+__all__ = ['easter', 'parser', 'relativedelta', 'rrule', 'tz',
+           'utils', 'zoneinfo']

utils/venv/lib/python3.6/site-packages/dateutil/_common.py

@@ -0,0 +1,43 @@
+"""
+Common code used in multiple modules.
+"""
+
+
+class weekday(object):
+    __slots__ = ["weekday", "n"]
+
+    def __init__(self, weekday, n=None):
+        self.weekday = weekday
+        self.n = n
+
+    def __call__(self, n):
+        if n == self.n:
+            return self
+        else:
+            return self.__class__(self.weekday, n)
+
+    def __eq__(self, other):
+        try:
+            if self.weekday != other.weekday or self.n != other.n:
+                return False
+        except AttributeError:
+            return False
+        return True
+
+    def __hash__(self):
+        return hash((
+          self.weekday,
+          self.n,
+        ))
+
+    def __ne__(self, other):
+        return not (self == other)
+
+    def __repr__(self):
+        s = ("MO", "TU", "WE", "TH", "FR", "SA", "SU")[self.weekday]
+        if not self.n:
+            return s
+        else:
+            return "%s(%+d)" % (s, self.n)
+
+# vim:ts=4:sw=4:et

utils/venv/lib/python3.6/site-packages/dateutil/_version.py

@@ -0,0 +1,4 @@
+# coding: utf-8
+# file generated by setuptools_scm
+# don't change, don't track in version control
+version = '2.7.5'

utils/venv/lib/python3.6/site-packages/dateutil/easter.py

@@ -0,0 +1,89 @@
+# -*- coding: utf-8 -*-
+"""
+This module offers a generic easter computing method for any given year, using
+Western, Orthodox or Julian algorithms.
+"""
+
+import datetime
+
+__all__ = ["easter", "EASTER_JULIAN", "EASTER_ORTHODOX", "EASTER_WESTERN"]
+
+EASTER_JULIAN = 1
+EASTER_ORTHODOX = 2
+EASTER_WESTERN = 3
+
+
+def easter(year, method=EASTER_WESTERN):
+    """
+    This method was ported from the work done by GM Arts,
+    on top of the algorithm by Claus Tondering, which was
+    based in part on the algorithm of Ouding (1940), as
+    quoted in "Explanatory Supplement to the Astronomical
+    Almanac", P.  Kenneth Seidelmann, editor.
+
+    This algorithm implements three different easter
+    calculation methods:
+
+    1 - Original calculation in Julian calendar, valid in
+        dates after 326 AD
+    2 - Original method, with date converted to Gregorian
+        calendar, valid in years 1583 to 4099
+    3 - Revised method, in Gregorian calendar, valid in
+        years 1583 to 4099 as well
+
+    These methods are represented by the constants:
+
+    * ``EASTER_JULIAN   = 1``
+    * ``EASTER_ORTHODOX = 2``
+    * ``EASTER_WESTERN  = 3``
+
+    The default method is method 3.
+
+    More about the algorithm may be found at:
+
+    `GM Arts: Easter Algorithms <http://www.gmarts.org/index.php?go=415>`_
+
+    and
+
+    `The Calendar FAQ: Easter <https://www.tondering.dk/claus/cal/easter.php>`_
+
+    """
+
+    if not (1 <= method <= 3):
+        raise ValueError("invalid method")
+
+    # g - Golden year - 1
+    # c - Century
+    # h - (23 - Epact) mod 30
+    # i - Number of days from March 21 to Paschal Full Moon
+    # j - Weekday for PFM (0=Sunday, etc)
+    # p - Number of days from March 21 to Sunday on or before PFM
+    #     (-6 to 28 methods 1 & 3, to 56 for method 2)
+    # e - Extra days to add for method 2 (converting Julian
+    #     date to Gregorian date)
+
+    y = year
+    g = y % 19
+    e = 0
+    if method < 3:
+        # Old method
+        i = (19*g + 15) % 30
+        j = (y + y//4 + i) % 7
+        if method == 2:
+            # Extra dates to convert Julian to Gregorian date
+            e = 10
+            if y > 1600:
+                e = e + y//100 - 16 - (y//100 - 16)//4
+    else:
+        # New method
+        c = y//100
+        h = (c - c//4 - (8*c + 13)//25 + 19*g + 15) % 30
+        i = h - (h//28)*(1 - (h//28)*(29//(h + 1))*((21 - g)//11))
+        j = (y + y//4 + i + 2 - c + c//4) % 7
+
+    # p can be from -6 to 56 corresponding to dates 22 March to 23 May
+    # (later dates apply to method 2, although 23 May never actually occurs)
+    p = i - j + e
+    d = 1 + (p + 27 + (p + 6)//40) % 31
+    m = 3 + (p + 26)//30
+    return datetime.date(int(y), int(m), int(d))

utils/venv/lib/python3.6/site-packages/dateutil/parser/__init__.py

@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+from ._parser import parse, parser, parserinfo
+from ._parser import DEFAULTPARSER, DEFAULTTZPARSER
+from ._parser import UnknownTimezoneWarning
+
+from ._parser import __doc__
+
+from .isoparser import isoparser, isoparse
+
+__all__ = ['parse', 'parser', 'parserinfo',
+           'isoparse', 'isoparser',
+           'UnknownTimezoneWarning']
+
+
+###
+# Deprecate portions of the private interface so that downstream code that
+# is improperly relying on it is given *some* notice.
+
+
+def __deprecated_private_func(f):
+    from functools import wraps
+    import warnings
+
+    msg = ('{name} is a private function and may break without warning, '
+           'it will be moved and or renamed in future versions.')
+    msg = msg.format(name=f.__name__)
+
+    @wraps(f)
+    def deprecated_func(*args, **kwargs):
+        warnings.warn(msg, DeprecationWarning)
+        return f(*args, **kwargs)
+
+    return deprecated_func
+
+def __deprecate_private_class(c):
+    import warnings
+
+    msg = ('{name} is a private class and may break without warning, '
+           'it will be moved and or renamed in future versions.')
+    msg = msg.format(name=c.__name__)
+
+    class private_class(c):
+        __doc__ = c.__doc__
+
+        def __init__(self, *args, **kwargs):
+            warnings.warn(msg, DeprecationWarning)
+            super(private_class, self).__init__(*args, **kwargs)
+
+    private_class.__name__ = c.__name__
+
+    return private_class
+
+
+from ._parser import _timelex, _resultbase
+from ._parser import _tzparser, _parsetz
+
+_timelex = __deprecate_private_class(_timelex)
+_tzparser = __deprecate_private_class(_tzparser)
+_resultbase = __deprecate_private_class(_resultbase)
+_parsetz = __deprecated_private_func(_parsetz)

utils/venv/lib/python3.6/site-packages/dateutil/parser/isoparser.py

@@ -0,0 +1,406 @@
+# -*- coding: utf-8 -*-
+"""
+This module offers a parser for ISO-8601 strings
+
+It is intended to support all valid date, time and datetime formats per the
+ISO-8601 specification.
+
+..versionadded:: 2.7.0
+"""
+from datetime import datetime, timedelta, time, date
+import calendar
+from dateutil import tz
+
+from functools import wraps
+
+import re
+import six
+
+__all__ = ["isoparse", "isoparser"]
+
+
+def _takes_ascii(f):
+    @wraps(f)
+    def func(self, str_in, *args, **kwargs):
+        # If it's a stream, read the whole thing
+        str_in = getattr(str_in, 'read', lambda: str_in)()
+
+        # If it's unicode, turn it into bytes, since ISO-8601 only covers ASCII
+        if isinstance(str_in, six.text_type):
+            # ASCII is the same in UTF-8
+            try:
+                str_in = str_in.encode('ascii')
+            except UnicodeEncodeError as e:
+                msg = 'ISO-8601 strings should contain only ASCII characters'
+                six.raise_from(ValueError(msg), e)
+
+        return f(self, str_in, *args, **kwargs)
+
+    return func
+
+
+class isoparser(object):
+    def __init__(self, sep=None):
+        """
+        :param sep:
+            A single character that separates date and time portions. If
+            ``None``, the parser will accept any single character.
+            For strict ISO-8601 adherence, pass ``'T'``.
+        """
+        if sep is not None:
+            if (len(sep) != 1 or ord(sep) >= 128 or sep in '0123456789'):
+                raise ValueError('Separator must be a single, non-numeric ' +
+                                 'ASCII character')
+
+            sep = sep.encode('ascii')
+
+        self._sep = sep
+
+    @_takes_ascii
+    def isoparse(self, dt_str):
+        """
+        Parse an ISO-8601 datetime string into a :class:`datetime.datetime`.
+
+        An ISO-8601 datetime string consists of a date portion, followed
+        optionally by a time portion - the date and time portions are separated
+        by a single character separator, which is ``T`` in the official
+        standard. Incomplete date formats (such as ``YYYY-MM``) may *not* be
+        combined with a time portion.
+
+        Supported date formats are:
+
+        Common:
+
+        - ``YYYY``
+        - ``YYYY-MM`` or ``YYYYMM``
+        - ``YYYY-MM-DD`` or ``YYYYMMDD``
+
+        Uncommon:
+
+        - ``YYYY-Www`` or ``YYYYWww`` - ISO week (day defaults to 0)
+        - ``YYYY-Www-D`` or ``YYYYWwwD`` - ISO week and day
+
+        The ISO week and day numbering follows the same logic as
+        :func:`datetime.date.isocalendar`.
+
+        Supported time formats are:
+
+        - ``hh``
+        - ``hh:mm`` or ``hhmm``
+        - ``hh:mm:ss`` or ``hhmmss``
+        - ``hh:mm:ss.sss`` or ``hh:mm:ss.ssssss`` (3-6 sub-second digits)
+
+        Midnight is a special case for `hh`, as the standard supports both
+        00:00 and 24:00 as a representation.
+
+        .. caution::
+
+            Support for fractional components other than seconds is part of the
+            ISO-8601 standard, but is not currently implemented in this parser.
+
+        Supported time zone offset formats are:
+
+        - `Z` (UTC)
+        - `±HH:MM`
+        - `±HHMM`
+        - `±HH`
+
+        Offsets will be represented as :class:`dateutil.tz.tzoffset` objects,
+        with the exception of UTC, which will be represented as
+        :class:`dateutil.tz.tzutc`. Time zone offsets equivalent to UTC (such
+        as `+00:00`) will also be represented as :class:`dateutil.tz.tzutc`.
+
+        :param dt_str:
+            A string or stream containing only an ISO-8601 datetime string
+
+        :return:
+            Returns a :class:`datetime.datetime` representing the string.
+            Unspecified components default to their lowest value.
+
+        .. warning::
+
+            As of version 2.7.0, the strictness of the parser should not be
+            considered a stable part of the contract. Any valid ISO-8601 string
+            that parses correctly with the default settings will continue to
+            parse correctly in future versions, but invalid strings that
+            currently fail (e.g. ``2017-01-01T00:00+00:00:00``) are not
+            guaranteed to continue failing in future versions if they encode
+            a valid date.
+
+        .. versionadded:: 2.7.0
+        """
+        components, pos = self._parse_isodate(dt_str)
+
+        if len(dt_str) > pos:
+            if self._sep is None or dt_str[pos:pos + 1] == self._sep:
+                components += self._parse_isotime(dt_str[pos + 1:])
+            else:
+                raise ValueError('String contains unknown ISO components')
+
+        return datetime(*components)
+
+    @_takes_ascii
+    def parse_isodate(self, datestr):
+        """
+        Parse the date portion of an ISO string.
+
+        :param datestr:
+            The string portion of an ISO string, without a separator
+
+        :return:
+            Returns a :class:`datetime.date` object
+        """
+        components, pos = self._parse_isodate(datestr)
+        if pos < len(datestr):
+            raise ValueError('String contains unknown ISO ' +
+                             'components: {}'.format(datestr))
+        return date(*components)
+
+    @_takes_ascii
+    def parse_isotime(self, timestr):
+        """
+        Parse the time portion of an ISO string.
+
+        :param timestr:
+            The time portion of an ISO string, without a separator
+
+        :return:
+            Returns a :class:`datetime.time` object
+        """
+        return time(*self._parse_isotime(timestr))
+
+    @_takes_ascii
+    def parse_tzstr(self, tzstr, zero_as_utc=True):
+        """
+        Parse a valid ISO time zone string.
+
+        See :func:`isoparser.isoparse` for details on supported formats.
+
+        :param tzstr:
+            A string representing an ISO time zone offset
+
+        :param zero_as_utc:
+            Whether to return :class:`dateutil.tz.tzutc` for zero-offset zones
+
+        :return:
+            Returns :class:`dateutil.tz.tzoffset` for offsets and
+            :class:`dateutil.tz.tzutc` for ``Z`` and (if ``zero_as_utc`` is
+            specified) offsets equivalent to UTC.
+        """
+        return self._parse_tzstr(tzstr, zero_as_utc=zero_as_utc)
+
+    # Constants
+    _MICROSECOND_END_REGEX = re.compile(b'[-+Z]+')
+    _DATE_SEP = b'-'
+    _TIME_SEP = b':'
+    _MICRO_SEP = b'.'
+
+    def _parse_isodate(self, dt_str):
+        try:
+            return self._parse_isodate_common(dt_str)
+        except ValueError:
+            return self._parse_isodate_uncommon(dt_str)
+
+    def _parse_isodate_common(self, dt_str):
+        len_str = len(dt_str)
+        components = [1, 1, 1]
+
+        if len_str < 4:
+            raise ValueError('ISO string too short')
+
+        # Year
+        components[0] = int(dt_str[0:4])
+        pos = 4
+        if pos >= len_str:
+            return components, pos
+
+        has_sep = dt_str[pos:pos + 1] == self._DATE_SEP
+        if has_sep:
+            pos += 1
+
+        # Month
+        if len_str - pos < 2:
+            raise ValueError('Invalid common month')
+
+        components[1] = int(dt_str[pos:pos + 2])
+        pos += 2
+
+        if pos >= len_str:
+            if has_sep:
+                return components, pos
+            else:
+                raise ValueError('Invalid ISO format')
+
+        if has_sep:
+            if dt_str[pos:pos + 1] != self._DATE_SEP:
+                raise ValueError('Invalid separator in ISO string')
+            pos += 1
+
+        # Day
+        if len_str - pos < 2:
+            raise ValueError('Invalid common day')
+        components[2] = int(dt_str[pos:pos + 2])
+        return components, pos + 2
+
+    def _parse_isodate_uncommon(self, dt_str):
+        if len(dt_str) < 4:
+            raise ValueError('ISO string too short')
+
+        # All ISO formats start with the year
+        year = int(dt_str[0:4])
+
+        has_sep = dt_str[4:5] == self._DATE_SEP
+
+        pos = 4 + has_sep       # Skip '-' if it's there
+        if dt_str[pos:pos + 1] == b'W':
+            # YYYY-?Www-?D?
+            pos += 1
+            weekno = int(dt_str[pos:pos + 2])
+            pos += 2
+
+            dayno = 1
+            if len(dt_str) > pos:
+                if (dt_str[pos:pos + 1] == self._DATE_SEP) != has_sep:
+                    raise ValueError('Inconsistent use of dash separator')
+
+                pos += has_sep
+
+                dayno = int(dt_str[pos:pos + 1])
+                pos += 1
+
+            base_date = self._calculate_weekdate(year, weekno, dayno)
+        else:
+            # YYYYDDD or YYYY-DDD
+            if len(dt_str) - pos < 3:
+                raise ValueError('Invalid ordinal day')
+
+            ordinal_day = int(dt_str[pos:pos + 3])
+            pos += 3
+
+            if ordinal_day < 1 or ordinal_day > (365 + calendar.isleap(year)):
+                raise ValueError('Invalid ordinal day' +
+                                 ' {} for year {}'.format(ordinal_day, year))
+
+            base_date = date(year, 1, 1) + timedelta(days=ordinal_day - 1)
+
+        components = [base_date.year, base_date.month, base_date.day]
+        return components, pos
+
+    def _calculate_weekdate(self, year, week, day):
+        """
+        Calculate the day of corresponding to the ISO year-week-day calendar.
+
+        This function is effectively the inverse of
+        :func:`datetime.date.isocalendar`.
+
+        :param year:
+            The year in the ISO calendar
+
+        :param week:
+            The week in the ISO calendar - range is [1, 53]
+
+        :param day:
+            The day in the ISO calendar - range is [1 (MON), 7 (SUN)]
+
+        :return:
+            Returns a :class:`datetime.date`
+        """
+        if not 0 < week < 54:
+            raise ValueError('Invalid week: {}'.format(week))
+
+        if not 0 < day < 8:     # Range is 1-7
+            raise ValueError('Invalid weekday: {}'.format(day))
+
+        # Get week 1 for the specific year:
+        jan_4 = date(year, 1, 4)   # Week 1 always has January 4th in it
+        week_1 = jan_4 - timedelta(days=jan_4.isocalendar()[2] - 1)
+
+        # Now add the specific number of weeks and days to get what we want
+        week_offset = (week - 1) * 7 + (day - 1)
+        return week_1 + timedelta(days=week_offset)
+
+    def _parse_isotime(self, timestr):
+        len_str = len(timestr)
+        components = [0, 0, 0, 0, None]
+        pos = 0
+        comp = -1
+
+        if len(timestr) < 2:
+            raise ValueError('ISO time too short')
+
+        has_sep = len_str >= 3 and timestr[2:3] == self._TIME_SEP
+
+        while pos < len_str and comp < 5:
+            comp += 1
+
+            if timestr[pos:pos + 1] in b'-+Z':
+                # Detect time zone boundary
+                components[-1] = self._parse_tzstr(timestr[pos:])
+                pos = len_str
+                break
+
+            if comp < 3:
+                # Hour, minute, second
+                components[comp] = int(timestr[pos:pos + 2])
+                pos += 2
+                if (has_sep and pos < len_str and
+                        timestr[pos:pos + 1] == self._TIME_SEP):
+                    pos += 1
+
+            if comp == 3:
+                # Microsecond
+                if timestr[pos:pos + 1] != self._MICRO_SEP:
+                    continue
+
+                pos += 1
+                us_str = self._MICROSECOND_END_REGEX.split(timestr[pos:pos + 6],
+                                                           1)[0]
+
+                components[comp] = int(us_str) * 10**(6 - len(us_str))
+                pos += len(us_str)
+
+        if pos < len_str:
+            raise ValueError('Unused components in ISO string')
+
+        if components[0] == 24:
+            # Standard supports 00:00 and 24:00 as representations of midnight
+            if any(component != 0 for component in components[1:4]):
+                raise ValueError('Hour may only be 24 at 24:00:00.000')
+            components[0] = 0
+
+        return components
+
+    def _parse_tzstr(self, tzstr, zero_as_utc=True):
+        if tzstr == b'Z':
+            return tz.tzutc()
+
+        if len(tzstr) not in {3, 5, 6}:
+            raise ValueError('Time zone offset must be 1, 3, 5 or 6 characters')
+
+        if tzstr[0:1] == b'-':
+            mult = -1
+        elif tzstr[0:1] == b'+':
+            mult = 1
+        else:
+            raise ValueError('Time zone offset requires sign')
+
+        hours = int(tzstr[1:3])
+        if len(tzstr) == 3:
+            minutes = 0
+        else:
+            minutes = int(tzstr[(4 if tzstr[3:4] == self._TIME_SEP else 3):])
+
+        if zero_as_utc and hours == 0 and minutes == 0:
+            return tz.tzutc()
+        else:
+            if minutes > 59:
+                raise ValueError('Invalid minutes in time zone offset')
+
+            if hours > 23:
+                raise ValueError('Invalid hours in time zone offset')
+
+            return tz.tzoffset(None, mult * (hours * 60 + minutes) * 60)
+
+
+DEFAULT_ISOPARSER = isoparser()
+isoparse = DEFAULT_ISOPARSER.isoparse

utils/venv/lib/python3.6/site-packages/dateutil/relativedelta.py

@@ -0,0 +1,590 @@
+# -*- coding: utf-8 -*-
+import datetime
+import calendar
+
+import operator
+from math import copysign
+
+from six import integer_types
+from warnings import warn
+
+from ._common import weekday
+
+MO, TU, WE, TH, FR, SA, SU = weekdays = tuple(weekday(x) for x in range(7))
+
+__all__ = ["relativedelta", "MO", "TU", "WE", "TH", "FR", "SA", "SU"]
+
+
+class relativedelta(object):
+    """
+    The relativedelta type is based on the specification of the excellent
+    work done by M.-A. Lemburg in his
+    `mx.DateTime <https://www.egenix.com/products/python/mxBase/mxDateTime/>`_ extension.
+    However, notice that this type does *NOT* implement the same algorithm as
+    his work. Do *NOT* expect it to behave like mx.DateTime's counterpart.
+
+    There are two different ways to build a relativedelta instance. The
+    first one is passing it two date/datetime classes::
+
+        relativedelta(datetime1, datetime2)
+
+    The second one is passing it any number of the following keyword arguments::
+
+        relativedelta(arg1=x,arg2=y,arg3=z...)
+
+        year, month, day, hour, minute, second, microsecond:
+            Absolute information (argument is singular); adding or subtracting a
+            relativedelta with absolute information does not perform an arithmetic
+            operation, but rather REPLACES the corresponding value in the
+            original datetime with the value(s) in relativedelta.
+
+        years, months, weeks, days, hours, minutes, seconds, microseconds:
+            Relative information, may be negative (argument is plural); adding
+            or subtracting a relativedelta with relative information performs
+            the corresponding aritmetic operation on the original datetime value
+            with the information in the relativedelta.
+
+        weekday: 
+            One of the weekday instances (MO, TU, etc). These
+            instances may receive a parameter N, specifying the Nth
+            weekday, which could be positive or negative (like MO(+1)
+            or MO(-2). Not specifying it is the same as specifying
+            +1. You can also use an integer, where 0=MO. Notice that
+            if the calculated date is already Monday, for example,
+            using MO(1) or MO(-1) won't change the day.
+
+        leapdays:
+            Will add given days to the date found, if year is a leap
+            year, and the date found is post 28 of february.
+
+        yearday, nlyearday:
+            Set the yearday or the non-leap year day (jump leap days).
+            These are converted to day/month/leapdays information.
+
+    There are relative and absolute forms of the keyword
+    arguments. The plural is relative, and the singular is
+    absolute. For each argument in the order below, the absolute form
+    is applied first (by setting each attribute to that value) and
+    then the relative form (by adding the value to the attribute).
+
+    The order of attributes considered when this relativedelta is
+    added to a datetime is:
+
+    1. Year
+    2. Month
+    3. Day
+    4. Hours
+    5. Minutes
+    6. Seconds
+    7. Microseconds
+
+    Finally, weekday is applied, using the rule described above.
+
+    For example
+
+    >>> dt = datetime(2018, 4, 9, 13, 37, 0)
+    >>> delta = relativedelta(hours=25, day=1, weekday=MO(1))
+    datetime(2018, 4, 2, 14, 37, 0)
+
+    First, the day is set to 1 (the first of the month), then 25 hours
+    are added, to get to the 2nd day and 14th hour, finally the
+    weekday is applied, but since the 2nd is already a Monday there is
+    no effect.
+
+    """
+
+    def __init__(self, dt1=None, dt2=None,
+                 years=0, months=0, days=0, leapdays=0, weeks=0,
+                 hours=0, minutes=0, seconds=0, microseconds=0,
+                 year=None, month=None, day=None, weekday=None,
+                 yearday=None, nlyearday=None,
+                 hour=None, minute=None, second=None, microsecond=None):
+
+        if dt1 and dt2:
+            # datetime is a subclass of date. So both must be date
+            if not (isinstance(dt1, datetime.date) and
+                    isinstance(dt2, datetime.date)):
+                raise TypeError("relativedelta only diffs datetime/date")
+
+            # We allow two dates, or two datetimes, so we coerce them to be
+            # of the same type
+            if (isinstance(dt1, datetime.datetime) !=
+                    isinstance(dt2, datetime.datetime)):
+                if not isinstance(dt1, datetime.datetime):
+                    dt1 = datetime.datetime.fromordinal(dt1.toordinal())
+                elif not isinstance(dt2, datetime.datetime):
+                    dt2 = datetime.datetime.fromordinal(dt2.toordinal())
+
+            self.years = 0
+            self.months = 0
+            self.days = 0
+            self.leapdays = 0
+            self.hours = 0
+            self.minutes = 0
+            self.seconds = 0
+            self.microseconds = 0
+            self.year = None
+            self.month = None
+            self.day = None
+            self.weekday = None
+            self.hour = None
+            self.minute = None
+            self.second = None
+            self.microsecond = None
+            self._has_time = 0
+
+            # Get year / month delta between the two
+            months = (dt1.year - dt2.year) * 12 + (dt1.month - dt2.month)
+            self._set_months(months)
+
+            # Remove the year/month delta so the timedelta is just well-defined
+            # time units (seconds, days and microseconds)
+            dtm = self.__radd__(dt2)
+
+            # If we've overshot our target, make an adjustment
+            if dt1 < dt2:
+                compare = operator.gt
+                increment = 1
+            else:
+                compare = operator.lt
+                increment = -1
+
+            while compare(dt1, dtm):
+                months += increment
+                self._set_months(months)
+                dtm = self.__radd__(dt2)
+
+            # Get the timedelta between the "months-adjusted" date and dt1
+            delta = dt1 - dtm
+            self.seconds = delta.seconds + delta.days * 86400
+            self.microseconds = delta.microseconds
+        else:
+            # Check for non-integer values in integer-only quantities
+            if any(x is not None and x != int(x) for x in (years, months)):
+                raise ValueError("Non-integer years and months are "
+                                 "ambiguous and not currently supported.")
+
+            # Relative information
+            self.years = int(years)
+            self.months = int(months)
+            self.days = days + weeks * 7
+            self.leapdays = leapdays
+            self.hours = hours
+            self.minutes = minutes
+            self.seconds = seconds
+            self.microseconds = microseconds
+
+            # Absolute information
+            self.year = year
+            self.month = month
+            self.day = day
+            self.hour = hour
+            self.minute = minute
+            self.second = second
+            self.microsecond = microsecond
+
+            if any(x is not None and int(x) != x
+                   for x in (year, month, day, hour,
+                             minute, second, microsecond)):
+                # For now we'll deprecate floats - later it'll be an error.
+                warn("Non-integer value passed as absolute information. " +
+                     "This is not a well-defined condition and will raise " +
+                     "errors in future versions.", DeprecationWarning)
+
+            if isinstance(weekday, integer_types):
+                self.weekday = weekdays[weekday]
+            else:
+                self.weekday = weekday
+
+            yday = 0
+            if nlyearday:
+                yday = nlyearday
+            elif yearday:
+                yday = yearday
+                if yearday > 59:
+                    self.leapdays = -1
+            if yday:
+                ydayidx = [31, 59, 90, 120, 151, 181, 212,
+                           243, 273, 304, 334, 366]
+                for idx, ydays in enumerate(ydayidx):
+                    if yday <= ydays:
+                        self.month = idx+1
+                        if idx == 0:
+                            self.day = yday
+                        else:
+                            self.day = yday-ydayidx[idx-1]
+                        break
+                else:
+                    raise ValueError("invalid year day (%d)" % yday)
+
+        self._fix()
+
+    def _fix(self):
+        if abs(self.microseconds) > 999999:
+            s = _sign(self.microseconds)
+            div, mod = divmod(self.microseconds * s, 1000000)
+            self.microseconds = mod * s
+            self.seconds += div * s
+        if abs(self.seconds) > 59:
+            s = _sign(self.seconds)
+            div, mod = divmod(self.seconds * s, 60)
+            self.seconds = mod * s
+            self.minutes += div * s
+        if abs(self.minutes) > 59:
+            s = _sign(self.minutes)
+            div, mod = divmod(self.minutes * s, 60)
+            self.minutes = mod * s
+            self.hours += div * s
+        if abs(self.hours) > 23:
+            s = _sign(self.hours)
+            div, mod = divmod(self.hours * s, 24)
+            self.hours = mod * s
+            self.days += div * s
+        if abs(self.months) > 11:
+            s = _sign(self.months)
+            div, mod = divmod(self.months * s, 12)
+            self.months = mod * s
+            self.years += div * s
+        if (self.hours or self.minutes or self.seconds or self.microseconds
+                or self.hour is not None or self.minute is not None or
+                self.second is not None or self.microsecond is not None):
+            self._has_time = 1
+        else:
+            self._has_time = 0
+
+    @property
+    def weeks(self):
+        return int(self.days / 7.0)
+
+    @weeks.setter
+    def weeks(self, value):
+        self.days = self.days - (self.weeks * 7) + value * 7
+
+    def _set_months(self, months):
+        self.months = months
+        if abs(self.months) > 11:
+            s = _sign(self.months)
+            div, mod = divmod(self.months * s, 12)
+            self.months = mod * s
+            self.years = div * s
+        else:
+            self.years = 0
+
+    def normalized(self):
+        """
+        Return a version of this object represented entirely using integer
+        values for the relative attributes.
+
+        >>> relativedelta(days=1.5, hours=2).normalized()
+        relativedelta(days=1, hours=14)
+
+        :return:
+            Returns a :class:`dateutil.relativedelta.relativedelta` object.
+        """
+        # Cascade remainders down (rounding each to roughly nearest microsecond)
+        days = int(self.days)
+
+        hours_f = round(self.hours + 24 * (self.days - days), 11)
+        hours = int(hours_f)
+
+        minutes_f = round(self.minutes + 60 * (hours_f - hours), 10)
+        minutes = int(minutes_f)
+
+        seconds_f = round(self.seconds + 60 * (minutes_f - minutes), 8)
+        seconds = int(seconds_f)
+
+        microseconds = round(self.microseconds + 1e6 * (seconds_f - seconds))
+
+        # Constructor carries overflow back up with call to _fix()
+        return self.__class__(years=self.years, months=self.months,
+                              days=days, hours=hours, minutes=minutes,
+                              seconds=seconds, microseconds=microseconds,
+                              leapdays=self.leapdays, year=self.year,
+                              month=self.month, day=self.day,
+                              weekday=self.weekday, hour=self.hour,
+                              minute=self.minute, second=self.second,
+                              microsecond=self.microsecond)
+
+    def __add__(self, other):
+        if isinstance(other, relativedelta):
+            return self.__class__(years=other.years + self.years,
+                                 months=other.months + self.months,
+                                 days=other.days + self.days,
+                                 hours=other.hours + self.hours,
+                                 minutes=other.minutes + self.minutes,
+                                 seconds=other.seconds + self.seconds,
+                                 microseconds=(other.microseconds +
+                                               self.microseconds),
+                                 leapdays=other.leapdays or self.leapdays,
+                                 year=(other.year if other.year is not None
+                                       else self.year),
+                                 month=(other.month if other.month is not None
+                                        else self.month),
+                                 day=(other.day if other.day is not None
+                                      else self.day),
+                                 weekday=(other.weekday if other.weekday is not None
+                                          else self.weekday),
+                                 hour=(other.hour if other.hour is not None
+                                       else self.hour),
+                                 minute=(other.minute if other.minute is not None
+                                         else self.minute),
+                                 second=(other.second if other.second is not None
+                                         else self.second),
+                                 microsecond=(other.microsecond if other.microsecond
+                                              is not None else
+                                              self.microsecond))
+        if isinstance(other, datetime.timedelta):
+            return self.__class__(years=self.years,
+                                  months=self.months,
+                                  days=self.days + other.days,
+                                  hours=self.hours,
+                                  minutes=self.minutes,
+                                  seconds=self.seconds + other.seconds,
+                                  microseconds=self.microseconds + other.microseconds,
+                                  leapdays=self.leapdays,
+                                  year=self.year,
+                                  month=self.month,
+                                  day=self.day,
+                                  weekday=self.weekday,
+                                  hour=self.hour,
+                                  minute=self.minute,
+                                  second=self.second,
+                                  microsecond=self.microsecond)
+        if not isinstance(other, datetime.date):
+            return NotImplemented
+        elif self._has_time and not isinstance(other, datetime.datetime):
+            other = datetime.datetime.fromordinal(other.toordinal())
+        year = (self.year or other.year)+self.years
+        month = self.month or other.month
+        if self.months:
+            assert 1 <= abs(self.months) <= 12
+            month += self.months
+            if month > 12:
+                year += 1
+                month -= 12
+            elif month < 1:
+                year -= 1
+                month += 12
+        day = min(calendar.monthrange(year, month)[1],
+                  self.day or other.day)
+        repl = {"year": year, "month": month, "day": day}
+        for attr in ["hour", "minute", "second", "microsecond"]:
+            value = getattr(self, attr)
+            if value is not None:
+                repl[attr] = value
+        days = self.days
+        if self.leapdays and month > 2 and calendar.isleap(year):
+            days += self.leapdays
+        ret = (other.replace(**repl)
+               + datetime.timedelta(days=days,
+                                    hours=self.hours,
+                                    minutes=self.minutes,
+                                    seconds=self.seconds,
+                                    microseconds=self.microseconds))
+        if self.weekday:
+            weekday, nth = self.weekday.weekday, self.weekday.n or 1
+            jumpdays = (abs(nth) - 1) * 7
+            if nth > 0:
+                jumpdays += (7 - ret.weekday() + weekday) % 7
+            else:
+                jumpdays += (ret.weekday() - weekday) % 7
+                jumpdays *= -1
+            ret += datetime.timedelta(days=jumpdays)
+        return ret
+
+    def __radd__(self, other):
+        return self.__add__(other)
+
+    def __rsub__(self, other):
+        return self.__neg__().__radd__(other)
+
+    def __sub__(self, other):
+        if not isinstance(other, relativedelta):
+            return NotImplemented   # In case the other object defines __rsub__
+        return self.__class__(years=self.years - other.years,
+                             months=self.months - other.months,
+                             days=self.days - other.days,
+                             hours=self.hours - other.hours,
+                             minutes=self.minutes - other.minutes,
+                             seconds=self.seconds - other.seconds,
+                             microseconds=self.microseconds - other.microseconds,
+                             leapdays=self.leapdays or other.leapdays,
+                             year=(self.year if self.year is not None
+                                   else other.year),
+                             month=(self.month if self.month is not None else
+                                    other.month),
+                             day=(self.day if self.day is not None else
+                                  other.day),
+                             weekday=(self.weekday if self.weekday is not None else
+                                      other.weekday),
+                             hour=(self.hour if self.hour is not None else
+                                   other.hour),
+                             minute=(self.minute if self.minute is not None else
+                                     other.minute),
+                             second=(self.second if self.second is not None else
+                                     other.second),
+                             microsecond=(self.microsecond if self.microsecond
+                                          is not None else
+                                          other.microsecond))
+
+    def __abs__(self):
+        return self.__class__(years=abs(self.years),
+                              months=abs(self.months),
+                              days=abs(self.days),
+                              hours=abs(self.hours),
+                              minutes=abs(self.minutes),
+                              seconds=abs(self.seconds),
+                              microseconds=abs(self.microseconds),
+                              leapdays=self.leapdays,
+                              year=self.year,
+                              month=self.month,
+                              day=self.day,
+                              weekday=self.weekday,
+                              hour=self.hour,
+                              minute=self.minute,
+                              second=self.second,
+                              microsecond=self.microsecond)
+
+    def __neg__(self):
+        return self.__class__(years=-self.years,
+                             months=-self.months,
+                             days=-self.days,
+                             hours=-self.hours,
+                             minutes=-self.minutes,
+                             seconds=-self.seconds,
+                             microseconds=-self.microseconds,
+                             leapdays=self.leapdays,
+                             year=self.year,
+                             month=self.month,
+                             day=self.day,
+                             weekday=self.weekday,
+                             hour=self.hour,
+                             minute=self.minute,
+                             second=self.second,
+                             microsecond=self.microsecond)
+
+    def __bool__(self):
+        return not (not self.years and
+                    not self.months and
+                    not self.days and
+                    not self.hours and
+                    not self.minutes and
+                    not self.seconds and
+                    not self.microseconds and
+                    not self.leapdays and
+                    self.year is None and
+                    self.month is None and
+                    self.day is None and
+                    self.weekday is None and
+                    self.hour is None and
+                    self.minute is None and
+                    self.second is None and
+                    self.microsecond is None)
+    # Compatibility with Python 2.x
+    __nonzero__ = __bool__
+
+    def __mul__(self, other):
+        try:
+            f = float(other)
+        except TypeError:
+            return NotImplemented
+
+        return self.__class__(years=int(self.years * f),
+                             months=int(self.months * f),
+                             days=int(self.days * f),
+                             hours=int(self.hours * f),
+                             minutes=int(self.minutes * f),
+                             seconds=int(self.seconds * f),
+                             microseconds=int(self.microseconds * f),
+                             leapdays=self.leapdays,
+                             year=self.year,
+                             month=self.month,
+                             day=self.day,
+                             weekday=self.weekday,
+                             hour=self.hour,
+                             minute=self.minute,
+                             second=self.second,
+                             microsecond=self.microsecond)
+
+    __rmul__ = __mul__
+
+    def __eq__(self, other):
+        if not isinstance(other, relativedelta):
+            return NotImplemented
+        if self.weekday or other.weekday:
+            if not self.weekday or not other.weekday:
+                return False
+            if self.weekday.weekday != other.weekday.weekday:
+                return False
+            n1, n2 = self.weekday.n, other.weekday.n
+            if n1 != n2 and not ((not n1 or n1 == 1) and (not n2 or n2 == 1)):
+                return False
+        return (self.years == other.years and
+                self.months == other.months and
+                self.days == other.days and
+                self.hours == other.hours and
+                self.minutes == other.minutes and
+                self.seconds == other.seconds and
+                self.microseconds == other.microseconds and
+                self.leapdays == other.leapdays and
+                self.year == other.year and
+                self.month == other.month and
+                self.day == other.day and
+                self.hour == other.hour and
+                self.minute == other.minute and
+                self.second == other.second and
+                self.microsecond == other.microsecond)
+
+    def __hash__(self):
+        return hash((
+            self.weekday,
+            self.years,
+            self.months,
+            self.days,
+            self.hours,
+            self.minutes,
+            self.seconds,
+            self.microseconds,
+            self.leapdays,
+            self.year,
+            self.month,
+            self.day,
+            self.hour,
+            self.minute,
+            self.second,
+            self.microsecond,
+        ))
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+    def __div__(self, other):
+        try:
+            reciprocal = 1 / float(other)
+        except TypeError:
+            return NotImplemented
+
+        return self.__mul__(reciprocal)
+
+    __truediv__ = __div__
+
+    def __repr__(self):
+        l = []
+        for attr in ["years", "months", "days", "leapdays",
+                     "hours", "minutes", "seconds", "microseconds"]:
+            value = getattr(self, attr)
+            if value:
+                l.append("{attr}={value:+g}".format(attr=attr, value=value))
+        for attr in ["year", "month", "day", "weekday",
+                     "hour", "minute", "second", "microsecond"]:
+            value = getattr(self, attr)
+            if value is not None:
+                l.append("{attr}={value}".format(attr=attr, value=repr(value)))
+        return "{classname}({attrs})".format(classname=self.__class__.__name__,
+                                             attrs=", ".join(l))
+
+
+def _sign(x):
+    return int(copysign(1, x))
+
+# vim:ts=4:sw=4:et

utils/venv/lib/python3.6/site-packages/dateutil/tz/__init__.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+from .tz import *
+from .tz import __doc__
+
+#: Convenience constant providing a :class:`tzutc()` instance
+#:
+#: .. versionadded:: 2.7.0
+UTC = tzutc()
+
+__all__ = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
+           "tzstr", "tzical", "tzwin", "tzwinlocal", "gettz",
+           "enfold", "datetime_ambiguous", "datetime_exists",
+           "resolve_imaginary", "UTC", "DeprecatedTzFormatWarning"]
+
+
+class DeprecatedTzFormatWarning(Warning):
+    """Warning raised when time zones are parsed from deprecated formats."""

utils/venv/lib/python3.6/site-packages/dateutil/tz/_common.py

@@ -0,0 +1,415 @@
+from six import PY3
+
+from functools import wraps
+
+from datetime import datetime, timedelta, tzinfo
+
+
+ZERO = timedelta(0)
+
+__all__ = ['tzname_in_python2', 'enfold']
+
+
+def tzname_in_python2(namefunc):
+    """Change unicode output into bytestrings in Python 2
+
+    tzname() API changed in Python 3. It used to return bytes, but was changed
+    to unicode strings
+    """
+    def adjust_encoding(*args, **kwargs):
+        name = namefunc(*args, **kwargs)
+        if name is not None and not PY3:
+            name = name.encode()
+
+        return name
+
+    return adjust_encoding
+
+
+# The following is adapted from Alexander Belopolsky's tz library
+# https://github.com/abalkin/tz
+if hasattr(datetime, 'fold'):
+    # This is the pre-python 3.6 fold situation
+    def enfold(dt, fold=1):
+        """
+        Provides a unified interface for assigning the ``fold`` attribute to
+        datetimes both before and after the implementation of PEP-495.
+
+        :param fold:
+            The value for the ``fold`` attribute in the returned datetime. This
+            should be either 0 or 1.
+
+        :return:
+            Returns an object for which ``getattr(dt, 'fold', 0)`` returns
+            ``fold`` for all versions of Python. In versions prior to
+            Python 3.6, this is a ``_DatetimeWithFold`` object, which is a
+            subclass of :py:class:`datetime.datetime` with the ``fold``
+            attribute added, if ``fold`` is 1.
+
+        .. versionadded:: 2.6.0
+        """
+        return dt.replace(fold=fold)
+
+else:
+    class _DatetimeWithFold(datetime):
+        """
+        This is a class designed to provide a PEP 495-compliant interface for
+        Python versions before 3.6. It is used only for dates in a fold, so
+        the ``fold`` attribute is fixed at ``1``.
+
+        .. versionadded:: 2.6.0
+        """
+        __slots__ = ()
+
+        def replace(self, *args, **kwargs):
+            """
+            Return a datetime with the same attributes, except for those
+            attributes given new values by whichever keyword arguments are
+            specified. Note that tzinfo=None can be specified to create a naive
+            datetime from an aware datetime with no conversion of date and time
+            data.
+
+            This is reimplemented in ``_DatetimeWithFold`` because pypy3 will
+            return a ``datetime.datetime`` even if ``fold`` is unchanged.
+            """
+            argnames = (
+                'year', 'month', 'day', 'hour', 'minute', 'second',
+                'microsecond', 'tzinfo'
+            )
+
+            for arg, argname in zip(args, argnames):
+                if argname in kwargs:
+                    raise TypeError('Duplicate argument: {}'.format(argname))
+
+                kwargs[argname] = arg
+
+            for argname in argnames:
+                if argname not in kwargs:
+                    kwargs[argname] = getattr(self, argname)
+
+            dt_class = self.__class__ if kwargs.get('fold', 1) else datetime
+
+            return dt_class(**kwargs)
+
+        @property
+        def fold(self):
+            return 1
+
+    def enfold(dt, fold=1):
+        """
+        Provides a unified interface for assigning the ``fold`` attribute to
+        datetimes both before and after the implementation of PEP-495.
+
+        :param fold:
+            The value for the ``fold`` attribute in the returned datetime. This
+            should be either 0 or 1.
+
+        :return:
+            Returns an object for which ``getattr(dt, 'fold', 0)`` returns
+            ``fold`` for all versions of Python. In versions prior to
+            Python 3.6, this is a ``_DatetimeWithFold`` object, which is a
+            subclass of :py:class:`datetime.datetime` with the ``fold``
+            attribute added, if ``fold`` is 1.
+
+        .. versionadded:: 2.6.0
+        """
+        if getattr(dt, 'fold', 0) == fold:
+            return dt
+
+        args = dt.timetuple()[:6]
+        args += (dt.microsecond, dt.tzinfo)
+
+        if fold:
+            return _DatetimeWithFold(*args)
+        else:
+            return datetime(*args)
+
+
+def _validate_fromutc_inputs(f):
+    """
+    The CPython version of ``fromutc`` checks that the input is a ``datetime``
+    object and that ``self`` is attached as its ``tzinfo``.
+    """
+    @wraps(f)
+    def fromutc(self, dt):
+        if not isinstance(dt, datetime):
+            raise TypeError("fromutc() requires a datetime argument")
+        if dt.tzinfo is not self:
+            raise ValueError("dt.tzinfo is not self")
+
+        return f(self, dt)
+
+    return fromutc
+
+
+class _tzinfo(tzinfo):
+    """
+    Base class for all ``dateutil`` ``tzinfo`` objects.
+    """
+
+    def is_ambiguous(self, dt):
+        """
+        Whether or not the "wall time" of a given datetime is ambiguous in this
+        zone.
+
+        :param dt:
+            A :py:class:`datetime.datetime`, naive or time zone aware.
+
+
+        :return:
+            Returns ``True`` if ambiguous, ``False`` otherwise.
+
+        .. versionadded:: 2.6.0
+        """
+
+        dt = dt.replace(tzinfo=self)
+
+        wall_0 = enfold(dt, fold=0)
+        wall_1 = enfold(dt, fold=1)
+
+        same_offset = wall_0.utcoffset() == wall_1.utcoffset()
+        same_dt = wall_0.replace(tzinfo=None) == wall_1.replace(tzinfo=None)
+
+        return same_dt and not same_offset
+
+    def _fold_status(self, dt_utc, dt_wall):
+        """
+        Determine the fold status of a "wall" datetime, given a representation
+        of the same datetime as a (naive) UTC datetime. This is calculated based
+        on the assumption that ``dt.utcoffset() - dt.dst()`` is constant for all
+        datetimes, and that this offset is the actual number of hours separating
+        ``dt_utc`` and ``dt_wall``.
+
+        :param dt_utc:
+            Representation of the datetime as UTC
+
+        :param dt_wall:
+            Representation of the datetime as "wall time". This parameter must
+            either have a `fold` attribute or have a fold-naive
+            :class:`datetime.tzinfo` attached, otherwise the calculation may
+            fail.
+        """
+        if self.is_ambiguous(dt_wall):
+            delta_wall = dt_wall - dt_utc
+            _fold = int(delta_wall == (dt_utc.utcoffset() - dt_utc.dst()))
+        else:
+            _fold = 0
+
+        return _fold
+
+    def _fold(self, dt):
+        return getattr(dt, 'fold', 0)
+
+    def _fromutc(self, dt):
+        """
+        Given a timezone-aware datetime in a given timezone, calculates a
+        timezone-aware datetime in a new timezone.
+
+        Since this is the one time that we *know* we have an unambiguous
+        datetime object, we take this opportunity to determine whether the
+        datetime is ambiguous and in a "fold" state (e.g. if it's the first
+        occurence, chronologically, of the ambiguous datetime).
+
+        :param dt:
+            A timezone-aware :class:`datetime.datetime` object.
+        """
+
+        # Re-implement the algorithm from Python's datetime.py
+        dtoff = dt.utcoffset()
+        if dtoff is None:
+            raise ValueError("fromutc() requires a non-None utcoffset() "
+                             "result")
+
+        # The original datetime.py code assumes that `dst()` defaults to
+        # zero during ambiguous times. PEP 495 inverts this presumption, so
+        # for pre-PEP 495 versions of python, we need to tweak the algorithm.
+        dtdst = dt.dst()
+        if dtdst is None:
+            raise ValueError("fromutc() requires a non-None dst() result")
+        delta = dtoff - dtdst
+
+        dt += delta
+        # Set fold=1 so we can default to being in the fold for
+        # ambiguous dates.
+        dtdst = enfold(dt, fold=1).dst()
+        if dtdst is None:
+            raise ValueError("fromutc(): dt.dst gave inconsistent "
+                             "results; cannot convert")
+        return dt + dtdst
+
+    @_validate_fromutc_inputs
+    def fromutc(self, dt):
+        """
+        Given a timezone-aware datetime in a given timezone, calculates a
+        timezone-aware datetime in a new timezone.
+
+        Since this is the one time that we *know* we have an unambiguous
+        datetime object, we take this opportunity to determine whether the
+        datetime is ambiguous and in a "fold" state (e.g. if it's the first
+        occurance, chronologically, of the ambiguous datetime).
+
+        :param dt:
+            A timezone-aware :class:`datetime.datetime` object.
+        """
+        dt_wall = self._fromutc(dt)
+
+        # Calculate the fold status given the two datetimes.
+        _fold = self._fold_status(dt, dt_wall)
+
+        # Set the default fold value for ambiguous dates
+        return enfold(dt_wall, fold=_fold)
+
+
+class tzrangebase(_tzinfo):
+    """
+    This is an abstract base class for time zones represented by an annual
+    transition into and out of DST. Child classes should implement the following
+    methods:
+
+        * ``__init__(self, *args, **kwargs)``
+        * ``transitions(self, year)`` - this is expected to return a tuple of
+          datetimes representing the DST on and off transitions in standard
+          time.
+
+    A fully initialized ``tzrangebase`` subclass should also provide the
+    following attributes:
+        * ``hasdst``: Boolean whether or not the zone uses DST.
+        * ``_dst_offset`` / ``_std_offset``: :class:`datetime.timedelta` objects
+          representing the respective UTC offsets.
+        * ``_dst_abbr`` / ``_std_abbr``: Strings representing the timezone short
+          abbreviations in DST and STD, respectively.
+        * ``_hasdst``: Whether or not the zone has DST.
+
+    .. versionadded:: 2.6.0
+    """
+    def __init__(self):
+        raise NotImplementedError('tzrangebase is an abstract base class')
+
+    def utcoffset(self, dt):
+        isdst = self._isdst(dt)
+
+        if isdst is None:
+            return None
+        elif isdst:
+            return self._dst_offset
+        else:
+            return self._std_offset
+
+    def dst(self, dt):
+        isdst = self._isdst(dt)
+
+        if isdst is None:
+            return None
+        elif isdst:
+            return self._dst_base_offset
+        else:
+            return ZERO
+
+    @tzname_in_python2
+    def tzname(self, dt):
+        if self._isdst(dt):
+            return self._dst_abbr
+        else:
+            return self._std_abbr
+
+    def fromutc(self, dt):
+        """ Given a datetime in UTC, return local time """
+        if not isinstance(dt, datetime):
+            raise TypeError("fromutc() requires a datetime argument")
+
+        if dt.tzinfo is not self:
+            raise ValueError("dt.tzinfo is not self")
+
+        # Get transitions - if there are none, fixed offset
+        transitions = self.transitions(dt.year)
+        if transitions is None:
+            return dt + self.utcoffset(dt)
+
+        # Get the transition times in UTC
+        dston, dstoff = transitions
+
+        dston -= self._std_offset
+        dstoff -= self._std_offset
+
+        utc_transitions = (dston, dstoff)
+        dt_utc = dt.replace(tzinfo=None)
+
+        isdst = self._naive_isdst(dt_utc, utc_transitions)
+
+        if isdst:
+            dt_wall = dt + self._dst_offset
+        else:
+            dt_wall = dt + self._std_offset
+
+        _fold = int(not isdst and self.is_ambiguous(dt_wall))
+
+        return enfold(dt_wall, fold=_fold)
+
+    def is_ambiguous(self, dt):
+        """
+        Whether or not the "wall time" of a given datetime is ambiguous in this
+        zone.
+
+        :param dt:
+            A :py:class:`datetime.datetime`, naive or time zone aware.
+
+
+        :return:
+            Returns ``True`` if ambiguous, ``False`` otherwise.
+
+        .. versionadded:: 2.6.0
+        """
+        if not self.hasdst:
+            return False
+
+        start, end = self.transitions(dt.year)
+
+        dt = dt.replace(tzinfo=None)
+        return (end <= dt < end + self._dst_base_offset)
+
+    def _isdst(self, dt):
+        if not self.hasdst:
+            return False
+        elif dt is None:
+            return None
+
+        transitions = self.transitions(dt.year)
+
+        if transitions is None:
+            return False
+
+        dt = dt.replace(tzinfo=None)
+
+        isdst = self._naive_isdst(dt, transitions)
+
+        # Handle ambiguous dates
+        if not isdst and self.is_ambiguous(dt):
+            return not self._fold(dt)
+        else:
+            return isdst
+
+    def _naive_isdst(self, dt, transitions):
+        dston, dstoff = transitions
+
+        dt = dt.replace(tzinfo=None)
+
+        if dston < dstoff:
+            isdst = dston <= dt < dstoff
+        else:
+            isdst = not dstoff <= dt < dston
+
+        return isdst
+
+    @property
+    def _dst_base_offset(self):
+        return self._dst_offset - self._std_offset
+
+    __hash__ = None
+
+    def __ne__(self, other):
+        return not (self == other)
+
+    def __repr__(self):
+        return "%s(...)" % self.__class__.__name__
+
+    __reduce__ = object.__reduce__

utils/venv/lib/python3.6/site-packages/dateutil/tz/_factories.py

@@ -0,0 +1,49 @@
+from datetime import timedelta
+
+
+class _TzSingleton(type):
+    def __init__(cls, *args, **kwargs):
+        cls.__instance = None
+        super(_TzSingleton, cls).__init__(*args, **kwargs)
+
+    def __call__(cls):
+        if cls.__instance is None:
+            cls.__instance = super(_TzSingleton, cls).__call__()
+        return cls.__instance
+
+class _TzFactory(type):
+    def instance(cls, *args, **kwargs):
+        """Alternate constructor that returns a fresh instance"""
+        return type.__call__(cls, *args, **kwargs)
+
+
+class _TzOffsetFactory(_TzFactory):
+    def __init__(cls, *args, **kwargs):
+        cls.__instances = {}
+
+    def __call__(cls, name, offset):
+        if isinstance(offset, timedelta):
+            key = (name, offset.total_seconds())
+        else:
+            key = (name, offset)
+
+        instance = cls.__instances.get(key, None)
+        if instance is None:
+            instance = cls.__instances.setdefault(key,
+                                                  cls.instance(name, offset))
+        return instance
+
+
+class _TzStrFactory(_TzFactory):
+    def __init__(cls, *args, **kwargs):
+        cls.__instances = {}
+
+    def __call__(cls, s, posix_offset=False):
+        key = (s, posix_offset)
+        instance = cls.__instances.get(key, None)
+
+        if instance is None:
+            instance = cls.__instances.setdefault(key,
+                cls.instance(s, posix_offset))
+        return instance
+

utils/venv/lib/python3.6/site-packages/dateutil/tz/win.py

@@ -0,0 +1,331 @@
+# This code was originally contributed by Jeffrey Harris.
+import datetime
+import struct
+
+from six.moves import winreg
+from six import text_type
+
+try:
+    import ctypes
+    from ctypes import wintypes
+except ValueError:
+    # ValueError is raised on non-Windows systems for some horrible reason.
+    raise ImportError("Running tzwin on non-Windows system")
+
+from ._common import tzrangebase
+
+__all__ = ["tzwin", "tzwinlocal", "tzres"]
+
+ONEWEEK = datetime.timedelta(7)
+
+TZKEYNAMENT = r"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones"
+TZKEYNAME9X = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Time Zones"
+TZLOCALKEYNAME = r"SYSTEM\CurrentControlSet\Control\TimeZoneInformation"
+
+
+def _settzkeyname():
+    handle = winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE)
+    try:
+        winreg.OpenKey(handle, TZKEYNAMENT).Close()
+        TZKEYNAME = TZKEYNAMENT
+    except WindowsError:
+        TZKEYNAME = TZKEYNAME9X
+    handle.Close()
+    return TZKEYNAME
+
+
+TZKEYNAME = _settzkeyname()
+
+
+class tzres(object):
+    """
+    Class for accessing `tzres.dll`, which contains timezone name related
+    resources.
+
+    .. versionadded:: 2.5.0
+    """
+    p_wchar = ctypes.POINTER(wintypes.WCHAR)        # Pointer to a wide char
+
+    def __init__(self, tzres_loc='tzres.dll'):
+        # Load the user32 DLL so we can load strings from tzres
+        user32 = ctypes.WinDLL('user32')
+
+        # Specify the LoadStringW function
+        user32.LoadStringW.argtypes = (wintypes.HINSTANCE,
+                                       wintypes.UINT,
+                                       wintypes.LPWSTR,
+                                       ctypes.c_int)
+
+        self.LoadStringW = user32.LoadStringW
+        self._tzres = ctypes.WinDLL(tzres_loc)
+        self.tzres_loc = tzres_loc
+
+    def load_name(self, offset):
+        """
+        Load a timezone name from a DLL offset (integer).
+
+        >>> from dateutil.tzwin import tzres
+        >>> tzr = tzres()
+        >>> print(tzr.load_name(112))
+        'Eastern Standard Time'
+
+        :param offset:
+            A positive integer value referring to a string from the tzres dll.
+
+        ..note:
+            Offsets found in the registry are generally of the form
+            `@tzres.dll,-114`. The offset in this case if 114, not -114.
+
+        """
+        resource = self.p_wchar()
+        lpBuffer = ctypes.cast(ctypes.byref(resource), wintypes.LPWSTR)
+        nchar = self.LoadStringW(self._tzres._handle, offset, lpBuffer, 0)
+        return resource[:nchar]
+
+    def name_from_string(self, tzname_str):
+        """
+        Parse strings as returned from the Windows registry into the time zone
+        name as defined in the registry.
+
+        >>> from dateutil.tzwin import tzres
+        >>> tzr = tzres()
+        >>> print(tzr.name_from_string('@tzres.dll,-251'))
+        'Dateline Daylight Time'
+        >>> print(tzr.name_from_string('Eastern Standard Time'))
+        'Eastern Standard Time'
+
+        :param tzname_str:
+            A timezone name string as returned from a Windows registry key.
+
+        :return:
+            Returns the localized timezone string from tzres.dll if the string
+            is of the form `@tzres.dll,-offset`, else returns the input string.
+        """
+        if not tzname_str.startswith('@'):
+            return tzname_str
+
+        name_splt = tzname_str.split(',-')
+        try:
+            offset = int(name_splt[1])
+        except:
+            raise ValueError("Malformed timezone string.")
+
+        return self.load_name(offset)
+
+
+class tzwinbase(tzrangebase):
+    """tzinfo class based on win32's timezones available in the registry."""
+    def __init__(self):
+        raise NotImplementedError('tzwinbase is an abstract base class')
+
+    def __eq__(self, other):
+        # Compare on all relevant dimensions, including name.
+        if not isinstance(other, tzwinbase):
+            return NotImplemented
+
+        return  (self._std_offset == other._std_offset and
+                 self._dst_offset == other._dst_offset and
+                 self._stddayofweek == other._stddayofweek and
+                 self._dstdayofweek == other._dstdayofweek and
+                 self._stdweeknumber == other._stdweeknumber and
+                 self._dstweeknumber == other._dstweeknumber and
+                 self._stdhour == other._stdhour and
+                 self._dsthour == other._dsthour and
+                 self._stdminute == other._stdminute and
+                 self._dstminute == other._dstminute and
+                 self._std_abbr == other._std_abbr and
+                 self._dst_abbr == other._dst_abbr)
+
+    @staticmethod
+    def list():
+        """Return a list of all time zones known to the system."""
+        with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
+            with winreg.OpenKey(handle, TZKEYNAME) as tzkey:
+                result = [winreg.EnumKey(tzkey, i)
+                          for i in range(winreg.QueryInfoKey(tzkey)[0])]
+        return result
+
+    def display(self):
+        return self._display
+
+    def transitions(self, year):
+        """
+        For a given year, get the DST on and off transition times, expressed
+        always on the standard time side. For zones with no transitions, this
+        function returns ``None``.
+
+        :param year:
+            The year whose transitions you would like to query.
+
+        :return:
+            Returns a :class:`tuple` of :class:`datetime.datetime` objects,
+            ``(dston, dstoff)`` for zones with an annual DST transition, or
+            ``None`` for fixed offset zones.
+        """
+
+        if not self.hasdst:
+            return None
+
+        dston = picknthweekday(year, self._dstmonth, self._dstdayofweek,
+                               self._dsthour, self._dstminute,
+                               self._dstweeknumber)
+
+        dstoff = picknthweekday(year, self._stdmonth, self._stddayofweek,
+                                self._stdhour, self._stdminute,
+                                self._stdweeknumber)
+
+        # Ambiguous dates default to the STD side
+        dstoff -= self._dst_base_offset
+
+        return dston, dstoff
+
+    def _get_hasdst(self):
+        return self._dstmonth != 0
+
+    @property
+    def _dst_base_offset(self):
+        return self._dst_base_offset_
+
+
+class tzwin(tzwinbase):
+
+    def __init__(self, name):
+        self._name = name
+
+        with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
+            tzkeyname = text_type("{kn}\\{name}").format(kn=TZKEYNAME, name=name)
+            with winreg.OpenKey(handle, tzkeyname) as tzkey:
+                keydict = valuestodict(tzkey)
+
+        self._std_abbr = keydict["Std"]
+        self._dst_abbr = keydict["Dlt"]
+
+        self._display = keydict["Display"]
+
+        # See http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
+        tup = struct.unpack("=3l16h", keydict["TZI"])
+        stdoffset = -tup[0]-tup[1]          # Bias + StandardBias * -1
+        dstoffset = stdoffset-tup[2]        # + DaylightBias * -1
+        self._std_offset = datetime.timedelta(minutes=stdoffset)
+        self._dst_offset = datetime.timedelta(minutes=dstoffset)
+
+        # for the meaning see the win32 TIME_ZONE_INFORMATION structure docs
+        # http://msdn.microsoft.com/en-us/library/windows/desktop/ms725481(v=vs.85).aspx
+        (self._stdmonth,
+         self._stddayofweek,   # Sunday = 0
+         self._stdweeknumber,  # Last = 5
+         self._stdhour,
+         self._stdminute) = tup[4:9]
+
+        (self._dstmonth,
+         self._dstdayofweek,   # Sunday = 0
+         self._dstweeknumber,  # Last = 5
+         self._dsthour,
+         self._dstminute) = tup[12:17]
+
+        self._dst_base_offset_ = self._dst_offset - self._std_offset
+        self.hasdst = self._get_hasdst()
+
+    def __repr__(self):
+        return "tzwin(%s)" % repr(self._name)
+
+    def __reduce__(self):
+        return (self.__class__, (self._name,))
+
+
+class tzwinlocal(tzwinbase):
+    def __init__(self):
+        with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
+            with winreg.OpenKey(handle, TZLOCALKEYNAME) as tzlocalkey:
+                keydict = valuestodict(tzlocalkey)
+
+            self._std_abbr = keydict["StandardName"]
+            self._dst_abbr = keydict["DaylightName"]
+
+            try:
+                tzkeyname = text_type('{kn}\\{sn}').format(kn=TZKEYNAME,
+                                                          sn=self._std_abbr)
+                with winreg.OpenKey(handle, tzkeyname) as tzkey:
+                    _keydict = valuestodict(tzkey)
+                    self._display = _keydict["Display"]
+            except OSError:
+                self._display = None
+
+        stdoffset = -keydict["Bias"]-keydict["StandardBias"]
+        dstoffset = stdoffset-keydict["DaylightBias"]
+
+        self._std_offset = datetime.timedelta(minutes=stdoffset)
+        self._dst_offset = datetime.timedelta(minutes=dstoffset)
+
+        # For reasons unclear, in this particular key, the day of week has been
+        # moved to the END of the SYSTEMTIME structure.
+        tup = struct.unpack("=8h", keydict["StandardStart"])
+
+        (self._stdmonth,
+         self._stdweeknumber,  # Last = 5
+         self._stdhour,
+         self._stdminute) = tup[1:5]
+
+        self._stddayofweek = tup[7]
+
+        tup = struct.unpack("=8h", keydict["DaylightStart"])
+
+        (self._dstmonth,
+         self._dstweeknumber,  # Last = 5
+         self._dsthour,
+         self._dstminute) = tup[1:5]
+
+        self._dstdayofweek = tup[7]
+
+        self._dst_base_offset_ = self._dst_offset - self._std_offset
+        self.hasdst = self._get_hasdst()
+
+    def __repr__(self):
+        return "tzwinlocal()"
+
+    def __str__(self):
+        # str will return the standard name, not the daylight name.
+        return "tzwinlocal(%s)" % repr(self._std_abbr)
+
+    def __reduce__(self):
+        return (self.__class__, ())
+
+
+def picknthweekday(year, month, dayofweek, hour, minute, whichweek):
+    """ dayofweek == 0 means Sunday, whichweek 5 means last instance """
+    first = datetime.datetime(year, month, 1, hour, minute)
+
+    # This will work if dayofweek is ISO weekday (1-7) or Microsoft-style (0-6),
+    # Because 7 % 7 = 0
+    weekdayone = first.replace(day=((dayofweek - first.isoweekday()) % 7) + 1)
+    wd = weekdayone + ((whichweek - 1) * ONEWEEK)
+    if (wd.month != month):
+        wd -= ONEWEEK
+
+    return wd
+
+
+def valuestodict(key):
+    """Convert a registry key's values to a dictionary."""
+    dout = {}
+    size = winreg.QueryInfoKey(key)[1]
+    tz_res = None
+
+    for i in range(size):
+        key_name, value, dtype = winreg.EnumValue(key, i)
+        if dtype == winreg.REG_DWORD or dtype == winreg.REG_DWORD_LITTLE_ENDIAN:
+            # If it's a DWORD (32-bit integer), it's stored as unsigned - convert
+            # that to a proper signed integer
+            if value & (1 << 31):
+                value = value - (1 << 32)
+        elif dtype == winreg.REG_SZ:
+            # If it's a reference to the tzres DLL, load the actual string
+            if value.startswith('@tzres'):
+                tz_res = tz_res or tzres()
+                value = tz_res.name_from_string(value)
+
+            value = value.rstrip('\x00')    # Remove trailing nulls
+
+        dout[key_name] = value
+
+    return dout

utils/venv/lib/python3.6/site-packages/dateutil/tzwin.py

@@ -0,0 +1,2 @@
+# tzwin has moved to dateutil.tz.win
+from .tz.win import *

utils/venv/lib/python3.6/site-packages/dateutil/utils.py

@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+"""
+This module offers general convenience and utility functions for dealing with
+datetimes.
+
+.. versionadded:: 2.7.0
+"""
+from __future__ import unicode_literals
+
+from datetime import datetime, time
+
+
+def today(tzinfo=None):
+    """
+    Returns a :py:class:`datetime` representing the current day at midnight
+
+    :param tzinfo:
+        The time zone to attach (also used to determine the current day).
+
+    :return:
+        A :py:class:`datetime.datetime` object representing the current day
+        at midnight.
+    """
+
+    dt = datetime.now(tzinfo)
+    return datetime.combine(dt.date(), time(0, tzinfo=tzinfo))
+
+
+def default_tzinfo(dt, tzinfo):
+    """
+    Sets the the ``tzinfo`` parameter on naive datetimes only
+
+    This is useful for example when you are provided a datetime that may have
+    either an implicit or explicit time zone, such as when parsing a time zone
+    string.
+
+    .. doctest::
+
+        >>> from dateutil.tz import tzoffset
+        >>> from dateutil.parser import parse
+        >>> from dateutil.utils import default_tzinfo
+        >>> dflt_tz = tzoffset("EST", -18000)
+        >>> print(default_tzinfo(parse('2014-01-01 12:30 UTC'), dflt_tz))
+        2014-01-01 12:30:00+00:00
+        >>> print(default_tzinfo(parse('2014-01-01 12:30'), dflt_tz))
+        2014-01-01 12:30:00-05:00
+
+    :param dt:
+        The datetime on which to replace the time zone
+
+    :param tzinfo:
+        The :py:class:`datetime.tzinfo` subclass instance to assign to
+        ``dt`` if (and only if) it is naive.
+
+    :return:
+        Returns an aware :py:class:`datetime.datetime`.
+    """
+    if dt.tzinfo is not None:
+        return dt
+    else:
+        return dt.replace(tzinfo=tzinfo)
+
+
+def within_delta(dt1, dt2, delta):
+    """
+    Useful for comparing two datetimes that may a negilible difference
+    to be considered equal.
+    """
+    delta = abs(delta)
+    difference = dt1 - dt2
+    return -delta <= difference <= delta

utils/venv/lib/python3.6/site-packages/dateutil/zoneinfo/__init__.py

@@ -0,0 +1,167 @@
+# -*- coding: utf-8 -*-
+import warnings
+import json
+
+from tarfile import TarFile
+from pkgutil import get_data
+from io import BytesIO
+
+from dateutil.tz import tzfile as _tzfile
+
+__all__ = ["get_zonefile_instance", "gettz", "gettz_db_metadata"]
+
+ZONEFILENAME = "dateutil-zoneinfo.tar.gz"
+METADATA_FN = 'METADATA'
+
+
+class tzfile(_tzfile):
+    def __reduce__(self):
+        return (gettz, (self._filename,))
+
+
+def getzoneinfofile_stream():
+    try:
+        return BytesIO(get_data(__name__, ZONEFILENAME))
+    except IOError as e:  # TODO  switch to FileNotFoundError?
+        warnings.warn("I/O error({0}): {1}".format(e.errno, e.strerror))
+        return None
+
+
+class ZoneInfoFile(object):
+    def __init__(self, zonefile_stream=None):
+        if zonefile_stream is not None:
+            with TarFile.open(fileobj=zonefile_stream) as tf:
+                self.zones = {zf.name: tzfile(tf.extractfile(zf), filename=zf.name)
+                              for zf in tf.getmembers()
+                              if zf.isfile() and zf.name != METADATA_FN}
+                # deal with links: They'll point to their parent object. Less
+                # waste of memory
+                links = {zl.name: self.zones[zl.linkname]
+                         for zl in tf.getmembers() if
+                         zl.islnk() or zl.issym()}
+                self.zones.update(links)
+                try:
+                    metadata_json = tf.extractfile(tf.getmember(METADATA_FN))
+                    metadata_str = metadata_json.read().decode('UTF-8')
+                    self.metadata = json.loads(metadata_str)
+                except KeyError:
+                    # no metadata in tar file
+                    self.metadata = None
+        else:
+            self.zones = {}
+            self.metadata = None
+
+    def get(self, name, default=None):
+        """
+        Wrapper for :func:`ZoneInfoFile.zones.get`. This is a convenience method
+        for retrieving zones from the zone dictionary.
+
+        :param name:
+            The name of the zone to retrieve. (Generally IANA zone names)
+
+        :param default:
+            The value to return in the event of a missing key.
+
+        .. versionadded:: 2.6.0
+
+        """
+        return self.zones.get(name, default)
+
+
+# The current API has gettz as a module function, although in fact it taps into
+# a stateful class. So as a workaround for now, without changing the API, we
+# will create a new "global" class instance the first time a user requests a
+# timezone. Ugly, but adheres to the api.
+#
+# TODO: Remove after deprecation period.
+_CLASS_ZONE_INSTANCE = []
+
+
+def get_zonefile_instance(new_instance=False):
+    """
+    This is a convenience function which provides a :class:`ZoneInfoFile`
+    instance using the data provided by the ``dateutil`` package. By default, it
+    caches a single instance of the ZoneInfoFile object and returns that.
+
+    :param new_instance:
+        If ``True``, a new instance of :class:`ZoneInfoFile` is instantiated and
+        used as the cached instance for the next call. Otherwise, new instances
+        are created only as necessary.
+
+    :return:
+        Returns a :class:`ZoneInfoFile` object.
+
+    .. versionadded:: 2.6
+    """
+    if new_instance:
+        zif = None
+    else:
+        zif = getattr(get_zonefile_instance, '_cached_instance', None)
+
+    if zif is None:
+        zif = ZoneInfoFile(getzoneinfofile_stream())
+
+        get_zonefile_instance._cached_instance = zif
+
+    return zif
+
+
+def gettz(name):
+    """
+    This retrieves a time zone from the local zoneinfo tarball that is packaged
+    with dateutil.
+
+    :param name:
+        An IANA-style time zone name, as found in the zoneinfo file.
+
+    :return:
+        Returns a :class:`dateutil.tz.tzfile` time zone object.
+
+    .. warning::
+        It is generally inadvisable to use this function, and it is only
+        provided for API compatibility with earlier versions. This is *not*
+        equivalent to ``dateutil.tz.gettz()``, which selects an appropriate
+        time zone based on the inputs, favoring system zoneinfo. This is ONLY
+        for accessing the dateutil-specific zoneinfo (which may be out of
+        date compared to the system zoneinfo).
+
+    .. deprecated:: 2.6
+        If you need to use a specific zoneinfofile over the system zoneinfo,
+        instantiate a :class:`dateutil.zoneinfo.ZoneInfoFile` object and call
+        :func:`dateutil.zoneinfo.ZoneInfoFile.get(name)` instead.
+
+        Use :func:`get_zonefile_instance` to retrieve an instance of the
+        dateutil-provided zoneinfo.
+    """
+    warnings.warn("zoneinfo.gettz() will be removed in future versions, "
+                  "to use the dateutil-provided zoneinfo files, instantiate a "
+                  "ZoneInfoFile object and use ZoneInfoFile.zones.get() "
+                  "instead. See the documentation for details.",
+                  DeprecationWarning)
+
+    if len(_CLASS_ZONE_INSTANCE) == 0:
+        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
+    return _CLASS_ZONE_INSTANCE[0].zones.get(name)
+
+
+def gettz_db_metadata():
+    """ Get the zonefile metadata
+
+    See `zonefile_metadata`_
+
+    :returns:
+        A dictionary with the database metadata
+
+    .. deprecated:: 2.6
+        See deprecation warning in :func:`zoneinfo.gettz`. To get metadata,
+        query the attribute ``zoneinfo.ZoneInfoFile.metadata``.
+    """
+    warnings.warn("zoneinfo.gettz_db_metadata() will be removed in future "
+                  "versions, to use the dateutil-provided zoneinfo files, "
+                  "ZoneInfoFile object and query the 'metadata' attribute "
+                  "instead. See the documentation for details.",
+                  DeprecationWarning)
+
+    if len(_CLASS_ZONE_INSTANCE) == 0:
+        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
+    return _CLASS_ZONE_INSTANCE[0].metadata

utils/venv/lib/python3.6/site-packages/dateutil/zoneinfo/rebuild.py

@@ -0,0 +1,53 @@
+import logging
+import os
+import tempfile
+import shutil
+import json
+from subprocess import check_call
+from tarfile import TarFile
+
+from dateutil.zoneinfo import METADATA_FN, ZONEFILENAME
+
+
+def rebuild(filename, tag=None, format="gz", zonegroups=[], metadata=None):
+    """Rebuild the internal timezone info in dateutil/zoneinfo/zoneinfo*tar*
+
+    filename is the timezone tarball from ``ftp.iana.org/tz``.
+
+    """
+    tmpdir = tempfile.mkdtemp()
+    zonedir = os.path.join(tmpdir, "zoneinfo")
+    moduledir = os.path.dirname(__file__)
+    try:
+        with TarFile.open(filename) as tf:
+            for name in zonegroups:
+                tf.extract(name, tmpdir)
+            filepaths = [os.path.join(tmpdir, n) for n in zonegroups]
+            try:
+                check_call(["zic", "-d", zonedir] + filepaths)
+            except OSError as e:
+                _print_on_nosuchfile(e)
+                raise
+        # write metadata file
+        with open(os.path.join(zonedir, METADATA_FN), 'w') as f:
+            json.dump(metadata, f, indent=4, sort_keys=True)
+        target = os.path.join(moduledir, ZONEFILENAME)
+        with TarFile.open(target, "w:%s" % format) as tf:
+            for entry in os.listdir(zonedir):
+                entrypath = os.path.join(zonedir, entry)
+                tf.add(entrypath, entry)
+    finally:
+        shutil.rmtree(tmpdir)
+
+
+def _print_on_nosuchfile(e):
+    """Print helpful troubleshooting message
+
+    e is an exception raised by subprocess.check_call()
+
+    """
+    if e.errno == 2:
+        logging.error(
+            "Could not find zic. Perhaps you need to install "
+            "libc-bin or some other package that provides it, "
+            "or it's not in your PATH?")

utils/venv/lib/python3.6/site-packages/easy_install.py

@@ -0,0 +1,5 @@
+"""Run the EasyInstall command"""
+
+if __name__ == '__main__':
+    from setuptools.command.easy_install import main
+    main()

utils/venv/lib/python3.6/site-packages/kiwisolver-1.0.1.dist-info/DESCRIPTION.rst

@@ -0,0 +1,16 @@
+Welcome to Kiwi
+===============
+
+.. image:: https://travis-ci.org/nucleic/kiwi.svg?branch=master
+    :target: https://travis-ci.org/nucleic/kiwi
+
+Kiwi is an efficient C++ implementation of the Cassowary constraint solving
+algorithm. Kiwi is an implementation of the algorithm based on the seminal
+Cassowary paper. It is *not* a refactoring of the original C++ solver. Kiwi
+has been designed from the ground up to be lightweight and fast. Kiwi ranges
+from 10x to 500x faster than the original Cassowary solver with typical use
+cases gaining a 40x improvement. Memory savings are consistently > 5x.
+
+In addition to the C++ solver, Kiwi ships with hand-rolled Python bindings.
+
+

utils/venv/lib/python3.6/site-packages/kiwisolver-1.0.1.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

utils/venv/lib/python3.6/site-packages/kiwisolver-1.0.1.dist-info/METADATA

@@ -0,0 +1,28 @@
+Metadata-Version: 2.0
+Name: kiwisolver
+Version: 1.0.1
+Summary: A fast implementation of the Cassowary constraint solver
+Home-page: https://github.com/nucleic/kiwi
+Author: The Nucleic Development Team
+Author-email: sccolbert@gmail.com
+License: UNKNOWN
+Description-Content-Type: UNKNOWN
+Platform: UNKNOWN
+Requires-Dist: setuptools
+
+Welcome to Kiwi
+===============
+
+.. image:: https://travis-ci.org/nucleic/kiwi.svg?branch=master
+    :target: https://travis-ci.org/nucleic/kiwi
+
+Kiwi is an efficient C++ implementation of the Cassowary constraint solving
+algorithm. Kiwi is an implementation of the algorithm based on the seminal
+Cassowary paper. It is *not* a refactoring of the original C++ solver. Kiwi
+has been designed from the ground up to be lightweight and fast. Kiwi ranges
+from 10x to 500x faster than the original Cassowary solver with typical use
+cases gaining a 40x improvement. Memory savings are consistently > 5x.
+
+In addition to the C++ solver, Kiwi ships with hand-rolled Python bindings.
+
+

utils/venv/lib/python3.6/site-packages/kiwisolver-1.0.1.dist-info/RECORD

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utils/venv/lib/python3.6/site-packages/kiwisolver-1.0.1.dist-info/WHEEL

@@ -0,0 +1,5 @@
+Wheel-Version: 1.0
+Generator: bdist_wheel (0.30.0)
+Root-Is-Purelib: false
+Tag: cp36-cp36m-manylinux1_x86_64
+

utils/venv/lib/python3.6/site-packages/kiwisolver-1.0.1.dist-info/metadata.json

@@ -0,0 +1 @@
+{"description_content_type": "UNKNOWN", "extensions": {"python.details": {"contacts": [{"email": "sccolbert@gmail.com", "name": "The Nucleic Development Team", "role": "author"}], "document_names": {"description": "DESCRIPTION.rst"}, "project_urls": {"Home": "https://github.com/nucleic/kiwi"}}}, "extras": [], "generator": "bdist_wheel (0.30.0)", "metadata_version": "2.0", "name": "kiwisolver", "run_requires": [{"requires": ["setuptools"]}], "summary": "A fast implementation of the Cassowary constraint solver", "version": "1.0.1"}

utils/venv/lib/python3.6/site-packages/kiwisolver-1.0.1.dist-info/top_level.txt

@@ -0,0 +1 @@
+kiwisolver

utils/venv/lib/python3.6/site-packages/matplotlib-3.0.2-py3.6-nspkg.pth

@@ -0,0 +1,2 @@
+import sys, types, os;has_mfs = sys.version_info > (3, 5);p = os.path.join(sys._getframe(1).f_locals['sitedir'], *('mpl_toolkits',));importlib = has_mfs and __import__('importlib.util');has_mfs and __import__('importlib.machinery');m = has_mfs and sys.modules.setdefault('mpl_toolkits', importlib.util.module_from_spec(importlib.machinery.PathFinder.find_spec('mpl_toolkits', [os.path.dirname(p)])));m = m or sys.modules.setdefault('mpl_toolkits', types.ModuleType('mpl_toolkits'));mp = (m or []) and m.__dict__.setdefault('__path__',[]);(p not in mp) and mp.append(p)
+import sys, types, os;has_mfs = sys.version_info > (3, 5);p = os.path.join(sys._getframe(1).f_locals['sitedir'], *('mpl_toolkits',));importlib = has_mfs and __import__('importlib.util');has_mfs and __import__('importlib.machinery');m = has_mfs and sys.modules.setdefault('mpl_toolkits', importlib.util.module_from_spec(importlib.machinery.PathFinder.find_spec('mpl_toolkits', [os.path.dirname(p)])));m = m or sys.modules.setdefault('mpl_toolkits', types.ModuleType('mpl_toolkits'));mp = (m or []) and m.__dict__.setdefault('__path__',[]);(p not in mp) and mp.append(p)

utils/venv/lib/python3.6/site-packages/matplotlib-3.0.2.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

utils/venv/lib/python3.6/site-packages/matplotlib-3.0.2.dist-info/METADATA

@@ -0,0 +1,33 @@
+Metadata-Version: 2.1
+Name: matplotlib
+Version: 3.0.2
+Summary: Python plotting package
+Home-page: http://matplotlib.org
+Author: John D. Hunter, Michael Droettboom
+Author-email: matplotlib-users@python.org
+License: BSD
+Download-URL: http://matplotlib.org/users/installing.html
+Platform: any
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Science/Research
+Classifier: License :: OSI Approved :: Python Software Foundation License
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Topic :: Scientific/Engineering :: Visualization
+Requires-Python: >=3.5
+Requires-Dist: numpy (>=1.10.0)
+Requires-Dist: cycler (>=0.10)
+Requires-Dist: kiwisolver (>=1.0.1)
+Requires-Dist: pyparsing (!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1)
+Requires-Dist: python-dateutil (>=2.1)
+
+
+Matplotlib strives to produce publication quality 2D graphics
+for interactive graphing, scientific publishing, user interface
+development and web application servers targeting multiple user
+interfaces and hardcopy output formats.
+
+

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utils/venv/lib/python3.6/site-packages/matplotlib-3.0.2.dist-info/WHEEL

@@ -0,0 +1,5 @@
+Wheel-Version: 1.0
+Generator: bdist_wheel (0.31.1)
+Root-Is-Purelib: false
+Tag: cp36-cp36m-manylinux1_x86_64
+

utils/venv/lib/python3.6/site-packages/matplotlib-3.0.2.dist-info/namespace_packages.txt

@@ -0,0 +1,2 @@
+mpl_toolkits
+mpl_toolkits

utils/venv/lib/python3.6/site-packages/matplotlib-3.0.2.dist-info/top_level.txt

@@ -0,0 +1,3 @@
+matplotlib
+mpl_toolkits
+pylab

utils/venv/lib/python3.6/site-packages/matplotlib/_animation_data.py

@@ -0,0 +1,210 @@
+# Javascript template for HTMLWriter
+JS_INCLUDE = """
+<link rel="stylesheet"
+href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/
+css/font-awesome.min.css">
+<script language="javascript">
+  /* Define the Animation class */
+  function Animation(frames, img_id, slider_id, interval, loop_select_id){
+    this.img_id = img_id;
+    this.slider_id = slider_id;
+    this.loop_select_id = loop_select_id;
+    this.interval = interval;
+    this.current_frame = 0;
+    this.direction = 0;
+    this.timer = null;
+    this.frames = new Array(frames.length);
+
+    for (var i=0; i<frames.length; i++)
+    {
+     this.frames[i] = new Image();
+     this.frames[i].src = frames[i];
+    }
+    document.getElementById(this.slider_id).max = this.frames.length - 1;
+    this.set_frame(this.current_frame);
+  }
+
+  Animation.prototype.get_loop_state = function(){
+    var button_group = document[this.loop_select_id].state;
+    for (var i = 0; i < button_group.length; i++) {
+        var button = button_group[i];
+        if (button.checked) {
+            return button.value;
+        }
+    }
+    return undefined;
+  }
+
+  Animation.prototype.set_frame = function(frame){
+    this.current_frame = frame;
+    document.getElementById(this.img_id).src =
+            this.frames[this.current_frame].src;
+    document.getElementById(this.slider_id).value = this.current_frame;
+  }
+
+  Animation.prototype.next_frame = function()
+  {
+    this.set_frame(Math.min(this.frames.length - 1, this.current_frame + 1));
+  }
+
+  Animation.prototype.previous_frame = function()
+  {
+    this.set_frame(Math.max(0, this.current_frame - 1));
+  }
+
+  Animation.prototype.first_frame = function()
+  {
+    this.set_frame(0);
+  }
+
+  Animation.prototype.last_frame = function()
+  {
+    this.set_frame(this.frames.length - 1);
+  }
+
+  Animation.prototype.slower = function()
+  {
+    this.interval /= 0.7;
+    if(this.direction > 0){this.play_animation();}
+    else if(this.direction < 0){this.reverse_animation();}
+  }
+
+  Animation.prototype.faster = function()
+  {
+    this.interval *= 0.7;
+    if(this.direction > 0){this.play_animation();}
+    else if(this.direction < 0){this.reverse_animation();}
+  }
+
+  Animation.prototype.anim_step_forward = function()
+  {
+    this.current_frame += 1;
+    if(this.current_frame < this.frames.length){
+      this.set_frame(this.current_frame);
+    }else{
+      var loop_state = this.get_loop_state();
+      if(loop_state == "loop"){
+        this.first_frame();
+      }else if(loop_state == "reflect"){
+        this.last_frame();
+        this.reverse_animation();
+      }else{
+        this.pause_animation();
+        this.last_frame();
+      }
+    }
+  }
+
+  Animation.prototype.anim_step_reverse = function()
+  {
+    this.current_frame -= 1;
+    if(this.current_frame >= 0){
+      this.set_frame(this.current_frame);
+    }else{
+      var loop_state = this.get_loop_state();
+      if(loop_state == "loop"){
+        this.last_frame();
+      }else if(loop_state == "reflect"){
+        this.first_frame();
+        this.play_animation();
+      }else{
+        this.pause_animation();
+        this.first_frame();
+      }
+    }
+  }
+
+  Animation.prototype.pause_animation = function()
+  {
+    this.direction = 0;
+    if (this.timer){
+      clearInterval(this.timer);
+      this.timer = null;
+    }
+  }
+
+  Animation.prototype.play_animation = function()
+  {
+    this.pause_animation();
+    this.direction = 1;
+    var t = this;
+    if (!this.timer) this.timer = setInterval(function() {
+        t.anim_step_forward();
+    }, this.interval);
+  }
+
+  Animation.prototype.reverse_animation = function()
+  {
+    this.pause_animation();
+    this.direction = -1;
+    var t = this;
+    if (!this.timer) this.timer = setInterval(function() {
+        t.anim_step_reverse();
+    }, this.interval);
+  }
+</script>
+"""
+
+
+# HTML template for HTMLWriter
+DISPLAY_TEMPLATE = """
+<div class="animation" align="center">
+    <img id="_anim_img{id}">
+    <br>
+    <input id="_anim_slider{id}" type="range" style="width:350px"
+           name="points" min="0" max="1" step="1" value="0"
+           onchange="anim{id}.set_frame(parseInt(this.value));"></input>
+    <br>
+    <button onclick="anim{id}.slower()"><i class="fa fa-minus"></i></button>
+    <button onclick="anim{id}.first_frame()"><i class="fa fa-fast-backward">
+        </i></button>
+    <button onclick="anim{id}.previous_frame()">
+        <i class="fa fa-step-backward"></i></button>
+    <button onclick="anim{id}.reverse_animation()">
+        <i class="fa fa-play fa-flip-horizontal"></i></button>
+    <button onclick="anim{id}.pause_animation()"><i class="fa fa-pause">
+        </i></button>
+    <button onclick="anim{id}.play_animation()"><i class="fa fa-play"></i>
+        </button>
+    <button onclick="anim{id}.next_frame()"><i class="fa fa-step-forward">
+        </i></button>
+    <button onclick="anim{id}.last_frame()"><i class="fa fa-fast-forward">
+        </i></button>
+    <button onclick="anim{id}.faster()"><i class="fa fa-plus"></i></button>
+  <form action="#n" name="_anim_loop_select{id}" class="anim_control">
+    <input type="radio" name="state"
+           value="once" {once_checked}> Once </input>
+    <input type="radio" name="state"
+           value="loop" {loop_checked}> Loop </input>
+    <input type="radio" name="state"
+           value="reflect" {reflect_checked}> Reflect </input>
+  </form>
+</div>
+
+
+<script language="javascript">
+  /* Instantiate the Animation class. */
+  /* The IDs given should match those used in the template above. */
+  (function() {{
+    var img_id = "_anim_img{id}";
+    var slider_id = "_anim_slider{id}";
+    var loop_select_id = "_anim_loop_select{id}";
+    var frames = new Array({Nframes});
+    {fill_frames}
+
+    /* set a timeout to make sure all the above elements are created before
+       the object is initialized. */
+    setTimeout(function() {{
+        anim{id} = new Animation(frames, img_id, slider_id, {interval},
+                                 loop_select_id);
+    }}, 0);
+  }})()
+</script>
+"""
+
+INCLUDED_FRAMES = """
+  for (var i=0; i<{Nframes}; i++){{
+    frames[i] = "{frame_dir}/frame" + ("0000000" + i).slice(-7) +
+                ".{frame_format}";
+  }}
+"""

utils/venv/lib/python3.6/site-packages/matplotlib/_constrained_layout.py

@@ -0,0 +1,729 @@
+"""
+This module provides the routine to adjust subplot layouts so that there are
+no overlapping axes or axes decorations.  All axes decorations are dealt with
+(labels, ticks, titles, ticklabels) and some dependent artists are also dealt
+with (colorbar, suptitle, legend).
+
+Layout is done via :meth:`~matplotlib.gridspec`, with one constraint per
+gridspec, so it is possible to have overlapping axes if the gridspecs
+overlap (i.e. using :meth:`~matplotlib.gridspec.GridSpecFromSubplotSpec`).
+Axes placed using ``figure.subplots()`` or ``figure.add_subplots()`` will
+participate in the layout.  Axes manually placed via ``figure.add_axes()``
+will not.
+
+See Tutorial: :doc:`/tutorials/intermediate/constrainedlayout_guide`
+
+"""
+
+# Development Notes:
+
+# What gets a layoutbox:
+#  - figure
+#    - gridspec
+#      - subplotspec
+#        EITHER:
+#         - axes + pos for the axes (i.e. the total area taken by axis and
+#            the actual "position" argument that needs to be sent to
+#             ax.set_position.)
+#           - The axes layout box will also encomapss the legend, and that is
+#             how legends get included (axes legeneds, not figure legends)
+#         - colorbars are sibblings of the axes if they are single-axes
+#           colorbars
+#        OR:
+#         - a gridspec can be inside a subplotspec.
+#           - subplotspec
+#           EITHER:
+#            - axes...
+#           OR:
+#            - gridspec... with arbitrary nesting...
+#      - colorbars are siblings of the subplotspecs if they are multi-axes
+#        colorbars.
+#   - suptitle:
+#      - right now suptitles are just stacked atop everything else in figure.
+#        Could imagine suptitles being gridspec suptitles, but not implimented
+#
+#   Todo:    AnchoredOffsetbox connected to gridspecs or axes.  This would
+#        be more general way to add extra-axes annotations.
+
+import numpy as np
+import logging
+import warnings
+
+from matplotlib.legend import Legend
+import matplotlib.transforms as transforms
+import matplotlib._layoutbox as layoutbox
+
+_log = logging.getLogger(__name__)
+
+
+def _in_same_column(colnum0min, colnum0max, colnumCmin, colnumCmax):
+    return (colnumCmin <= colnum0min <= colnumCmax
+            or colnumCmin <= colnum0max <= colnumCmax)
+
+
+def _in_same_row(rownum0min, rownum0max, rownumCmin, rownumCmax):
+    return (rownumCmin <= rownum0min <= rownumCmax
+            or rownumCmin <= rownum0max <= rownumCmax)
+
+
+def _axes_all_finite_sized(fig):
+    """
+    helper function to make sure all axes in the
+    figure have a finite width and height.  If not, return False
+    """
+    for ax in fig.axes:
+        if ax._layoutbox is not None:
+            newpos = ax._poslayoutbox.get_rect()
+            if newpos[2] <= 0 or newpos[3] <= 0:
+                return False
+    return True
+
+
+######################################################
+def do_constrained_layout(fig, renderer, h_pad, w_pad,
+        hspace=None, wspace=None):
+
+    """
+    Do the constrained_layout.  Called at draw time in
+     ``figure.constrained_layout()``
+
+    Parameters
+    ----------
+
+
+    fig: Figure
+      is the ``figure`` instance to do the layout in.
+
+    renderer: Renderer
+      the renderer to use.
+
+     h_pad, w_pad : float
+       are in figure-normalized units, and are a padding around the axes
+       elements.
+
+     hspace, wspace : float
+        are in fractions of the subplot sizes.
+
+    """
+
+    '''  Steps:
+
+    1. get a list of unique gridspecs in this figure.  Each gridspec will be
+    constrained separately.
+    2. Check for gaps in the gridspecs.  i.e. if not every axes slot in the
+    gridspec has been filled.  If empty, add a ghost axis that is made so
+    that it cannot be seen (though visible=True).  This is needed to make
+    a blank spot in the layout.
+    3. Compare the tight_bbox of each axes to its `position`, and assume that
+    the difference is the space needed by the elements around the edge of
+    the axes (decorations) like the title, ticklabels, x-labels, etc.  This
+    can include legends who overspill the axes boundaries.
+    4. Constrain gridspec elements to line up:
+        a) if colnum0 neq colnumC, the two subplotspecs are stacked next to
+        each other, with the appropriate order.
+        b) if colnum0 == columnC line up the left or right side of the
+        _poslayoutbox (depending if it is the min or max num that is equal).
+        c) do the same for rows...
+    5. The above doesn't constrain relative sizes of the _poslayoutboxes at
+    all, and indeed zero-size is a solution that the solver often finds more
+    convenient than expanding the sizes.  Right now the solution is to compare
+    subplotspec sizes (i.e. drowsC and drows0) and constrain the larger
+    _poslayoutbox to be larger than the ratio of the sizes.  i.e. if drows0 >
+    drowsC,  then ax._poslayoutbox > axc._poslayoutbox * drowsC / drows0. This
+    works fine *if* the decorations are similar between the axes.  If the
+    larger subplotspec has much larger axes decorations, then the constraint
+    above is incorrect.
+
+    We need the greater than in the above, in general, rather than an equals
+    sign.  Consider the case of the left column having 2 rows, and the right
+    column having 1 row.  We want the top and bottom of the _poslayoutboxes to
+    line up. So that means if there are decorations on the left column axes
+    they will be smaller than half as large as the right hand axis.
+
+    This can break down if the decoration size for the right hand axis (the
+    margins) is very large.  There must be a math way to check for this case.
+
+    '''
+
+    invTransFig = fig.transFigure.inverted().transform_bbox
+
+    # list of unique gridspecs that contain child axes:
+    gss = set()
+    for ax in fig.axes:
+        if hasattr(ax, 'get_subplotspec'):
+            gs = ax.get_subplotspec().get_gridspec()
+            if gs._layoutbox is not None:
+                gss.add(gs)
+    if len(gss) == 0:
+        warnings.warn('There are no gridspecs with layoutboxes. '
+                      'Possibly did not call parent GridSpec with the figure= '
+                      'keyword')
+
+    if fig._layoutbox.constrained_layout_called < 1:
+        for gs in gss:
+            # fill in any empty gridspec slots w/ ghost axes...
+            _make_ghost_gridspec_slots(fig, gs)
+
+    for nnn in range(2):
+        # do the algrithm twice.  This has to be done because decorators
+        # change size after the first re-position (i.e. x/yticklabels get
+        # larger/smaller).  This second reposition tends to be much milder,
+        # so doing twice makes things work OK.
+        for ax in fig.axes:
+            _log.debug(ax._layoutbox)
+            if ax._layoutbox is not None:
+                # make margins for each layout box based on the size of
+                # the decorators.
+                _make_layout_margins(ax, renderer, h_pad, w_pad)
+
+        # do layout for suptitle.
+        if fig._suptitle is not None and fig._suptitle._layoutbox is not None:
+            sup = fig._suptitle
+            bbox = invTransFig(sup.get_window_extent(renderer=renderer))
+            height = bbox.y1 - bbox.y0
+            sup._layoutbox.edit_height(height+h_pad)
+
+        # OK, the above lines up ax._poslayoutbox with ax._layoutbox
+        # now we need to
+        #   1) arrange the subplotspecs.  We do it at this level because
+        #      the subplotspecs are meant to contain other dependent axes
+        #      like colorbars or legends.
+        #   2) line up the right and left side of the ax._poslayoutbox
+        #      that have the same subplotspec maxes.
+
+        if fig._layoutbox.constrained_layout_called < 1:
+            # arrange the subplotspecs...  This is all done relative to each
+            # other.  Some subplotspecs conatain axes, and others contain
+            # gridspecs the ones that contain gridspecs are a set proportion
+            # of their parent gridspec.  The ones that contain axes are
+            # not so constrained.
+            figlb = fig._layoutbox
+            for child in figlb.children:
+                if child._is_gridspec_layoutbox():
+                    # This routine makes all the subplot spec containers
+                    # have the correct arrangement.  It just stacks the
+                    # subplot layoutboxes in the correct order...
+                    _arrange_subplotspecs(child, hspace=hspace, wspace=wspace)
+
+            for gs in gss:
+                _align_spines(fig, gs)
+
+        fig._layoutbox.constrained_layout_called += 1
+        fig._layoutbox.update_variables()
+
+        # check if any axes collapsed to zero.  If not, don't change positions:
+        if _axes_all_finite_sized(fig):
+            # Now set the position of the axes...
+            for ax in fig.axes:
+                if ax._layoutbox is not None:
+                    newpos = ax._poslayoutbox.get_rect()
+                    # Now set the new position.
+                    # ax.set_position will zero out the layout for
+                    # this axis, allowing users to hard-code the position,
+                    # so this does the same w/o zeroing layout.
+                    ax._set_position(newpos, which='original')
+        else:
+            warnings.warn('constrained_layout not applied.  At least '
+                          'one axes collapsed to zero width or height.')
+
+
+def _make_ghost_gridspec_slots(fig, gs):
+    """
+    Check for unoccupied gridspec slots and make ghost axes for these
+    slots...  Do for each gs separately.  This is a pretty big kludge
+    but shoudn't have too much ill effect.  The worst is that
+    someone querrying the figure will wonder why there are more
+    axes than they thought.
+    """
+    nrows, ncols = gs.get_geometry()
+    hassubplotspec = np.zeros(nrows * ncols, dtype=bool)
+    axs = []
+    for ax in fig.axes:
+        if (hasattr(ax, 'get_subplotspec')
+                and ax._layoutbox is not None
+                and ax.get_subplotspec().get_gridspec() == gs):
+            axs += [ax]
+    for ax in axs:
+        ss0 = ax.get_subplotspec()
+        if ss0.num2 is None:
+            ss0.num2 = ss0.num1
+        hassubplotspec[ss0.num1:(ss0.num2 + 1)] = True
+    for nn, hss in enumerate(hassubplotspec):
+        if not hss:
+            # this gridspec slot doesn't have an axis so we
+            # make a "ghost".
+            ax = fig.add_subplot(gs[nn])
+            ax.set_frame_on(False)
+            ax.set_xticks([])
+            ax.set_yticks([])
+            ax.set_facecolor((1, 0, 0, 0))
+
+
+def _make_layout_margins(ax, renderer, h_pad, w_pad):
+    """
+    For each axes, make a margin between the *pos* layoutbox and the
+    *axes* layoutbox be a minimum size that can accommodate the
+    decorations on the axis.
+    """
+    fig = ax.figure
+    invTransFig = fig.transFigure.inverted().transform_bbox
+
+    pos = ax.get_position(original=True)
+    tightbbox = ax.get_tightbbox(renderer=renderer)
+    bbox = invTransFig(tightbbox)
+    # use stored h_pad if it exists
+    h_padt = ax._poslayoutbox.h_pad
+    if h_padt is None:
+        h_padt = h_pad
+    w_padt = ax._poslayoutbox.w_pad
+    if w_padt is None:
+        w_padt = w_pad
+    ax._poslayoutbox.edit_left_margin_min(-bbox.x0 +
+            pos.x0 + w_padt)
+    ax._poslayoutbox.edit_right_margin_min(bbox.x1 -
+            pos.x1 + w_padt)
+    ax._poslayoutbox.edit_bottom_margin_min(
+            -bbox.y0 + pos.y0 + h_padt)
+    ax._poslayoutbox.edit_top_margin_min(bbox.y1-pos.y1+h_padt)
+    _log.debug('left %f', (-bbox.x0 + pos.x0 + w_pad))
+    _log.debug('right %f', (bbox.x1 - pos.x1 + w_pad))
+    _log.debug('bottom %f', (-bbox.y0 + pos.y0 + h_padt))
+    # Sometimes its possible for the solver to collapse
+    # rather than expand axes, so they all have zero height
+    # or width.  This stops that...  It *should* have been
+    # taken into account w/ pref_width...
+    if fig._layoutbox.constrained_layout_called < 1:
+        ax._poslayoutbox.constrain_height_min(20, strength='weak')
+        ax._poslayoutbox.constrain_width_min(20, strength='weak')
+        ax._layoutbox.constrain_height_min(20, strength='weak')
+        ax._layoutbox.constrain_width_min(20, strength='weak')
+        ax._poslayoutbox.constrain_top_margin(0, strength='weak')
+        ax._poslayoutbox.constrain_bottom_margin(0,
+                strength='weak')
+        ax._poslayoutbox.constrain_right_margin(0, strength='weak')
+        ax._poslayoutbox.constrain_left_margin(0, strength='weak')
+
+
+def _align_spines(fig, gs):
+    """
+    - Align right/left and bottom/top spines of appropriate subplots.
+    - Compare size of subplotspec including height and width ratios
+       and make sure that the axes spines are at least as large
+       as they should be.
+    """
+    # for each gridspec...
+    nrows, ncols = gs.get_geometry()
+    width_ratios = gs.get_width_ratios()
+    height_ratios = gs.get_height_ratios()
+    if width_ratios is None:
+        width_ratios = np.ones(ncols)
+    if height_ratios is None:
+        height_ratios = np.ones(nrows)
+
+    # get axes in this gridspec....
+    axs = []
+    for ax in fig.axes:
+        if (hasattr(ax, 'get_subplotspec')
+                and ax._layoutbox is not None):
+            if ax.get_subplotspec().get_gridspec() == gs:
+                axs += [ax]
+    rownummin = np.zeros(len(axs), dtype=np.int8)
+    rownummax = np.zeros(len(axs), dtype=np.int8)
+    colnummin = np.zeros(len(axs), dtype=np.int8)
+    colnummax = np.zeros(len(axs), dtype=np.int8)
+    width = np.zeros(len(axs))
+    height = np.zeros(len(axs))
+
+    for n, ax in enumerate(axs):
+        ss0 = ax.get_subplotspec()
+        if ss0.num2 is None:
+            ss0.num2 = ss0.num1
+        rownummin[n], colnummin[n] = divmod(ss0.num1, ncols)
+        rownummax[n], colnummax[n] = divmod(ss0.num2, ncols)
+        width[n] = np.sum(
+                width_ratios[colnummin[n]:(colnummax[n] + 1)])
+        height[n] = np.sum(
+                height_ratios[rownummin[n]:(rownummax[n] + 1)])
+
+    for nn, ax in enumerate(axs[:-1]):
+        ss0 = ax.get_subplotspec()
+
+        # now compare ax to all the axs:
+        #
+        # If the subplotspecs have the same colnumXmax, then line
+        # up their right sides.  If they have the same min, then
+        # line up their left sides (and vertical equivalents).
+        rownum0min, colnum0min = rownummin[nn], colnummin[nn]
+        rownum0max, colnum0max = rownummax[nn], colnummax[nn]
+        width0, height0 = width[nn], height[nn]
+        alignleft = False
+        alignright = False
+        alignbot = False
+        aligntop = False
+        alignheight = False
+        alignwidth = False
+        for mm in range(nn+1, len(axs)):
+            axc = axs[mm]
+            rownumCmin, colnumCmin = rownummin[mm], colnummin[mm]
+            rownumCmax, colnumCmax = rownummax[mm], colnummax[mm]
+            widthC, heightC = width[mm], height[mm]
+            # Horizontally align axes spines if they have the
+            # same min or max:
+            if not alignleft and colnum0min == colnumCmin:
+                # we want the _poslayoutboxes to line up on left
+                # side of the axes spines...
+                layoutbox.align([ax._poslayoutbox,
+                                 axc._poslayoutbox],
+                                'left')
+                alignleft = True
+
+            if not alignright and colnum0max == colnumCmax:
+                # line up right sides of _poslayoutbox
+                layoutbox.align([ax._poslayoutbox,
+                                 axc._poslayoutbox],
+                                'right')
+                alignright = True
+            # Vertically align axes spines if they have the
+            # same min or max:
+            if not aligntop and rownum0min == rownumCmin:
+                # line up top of _poslayoutbox
+                _log.debug('rownum0min == rownumCmin')
+                layoutbox.align([ax._poslayoutbox, axc._poslayoutbox],
+                                'top')
+                aligntop = True
+
+            if not alignbot and rownum0max == rownumCmax:
+                # line up bottom of _poslayoutbox
+                _log.debug('rownum0max == rownumCmax')
+                layoutbox.align([ax._poslayoutbox, axc._poslayoutbox],
+                                'bottom')
+                alignbot = True
+            ###########
+            # Now we make the widths and heights of position boxes
+            # similar. (i.e the spine locations)
+            # This allows vertically stacked subplots to have
+            # different sizes if they occupy different amounts
+            # of the gridspec:  i.e.
+            # gs = gridspec.GridSpec(3,1)
+            # ax1 = gs[0,:]
+            # ax2 = gs[1:,:]
+            # then drows0 = 1, and drowsC = 2, and ax2
+            # should be at least twice as large as ax1.
+            # But it can be more than twice as large because
+            # it needs less room for the labeling.
+            #
+            # For height, this only needs to be done if the
+            # subplots share a column.  For width if they
+            # share a row.
+
+            drowsC = (rownumCmax - rownumCmin + 1)
+            drows0 = (rownum0max - rownum0min + 1)
+            dcolsC = (colnumCmax - colnumCmin + 1)
+            dcols0 = (colnum0max - colnum0min + 1)
+
+            if not alignheight and drows0 == drowsC:
+                ax._poslayoutbox.constrain_height(
+                        axc._poslayoutbox.height * height0 / heightC)
+                alignheight = True
+            elif _in_same_column(colnum0min, colnum0max,
+                    colnumCmin, colnumCmax):
+                if height0 > heightC:
+                    ax._poslayoutbox.constrain_height_min(
+                        axc._poslayoutbox.height * height0 / heightC)
+                    # these constraints stop the smaller axes from
+                    # being allowed to go to zero height...
+                    axc._poslayoutbox.constrain_height_min(
+                        ax._poslayoutbox.height * heightC /
+                        (height0*1.8))
+                elif height0 < heightC:
+                    axc._poslayoutbox.constrain_height_min(
+                        ax._poslayoutbox.height * heightC / height0)
+                    ax._poslayoutbox.constrain_height_min(
+                        ax._poslayoutbox.height * height0 /
+                        (heightC*1.8))
+            # widths...
+            if not alignwidth and dcols0 == dcolsC:
+                ax._poslayoutbox.constrain_width(
+                        axc._poslayoutbox.width * width0 / widthC)
+                alignwidth = True
+            elif _in_same_row(rownum0min, rownum0max,
+                    rownumCmin, rownumCmax):
+                if width0 > widthC:
+                    ax._poslayoutbox.constrain_width_min(
+                            axc._poslayoutbox.width * width0 / widthC)
+                    axc._poslayoutbox.constrain_width_min(
+                            ax._poslayoutbox.width * widthC /
+                            (width0*1.8))
+                elif width0 < widthC:
+                    axc._poslayoutbox.constrain_width_min(
+                            ax._poslayoutbox.width * widthC / width0)
+                    ax._poslayoutbox.constrain_width_min(
+                            axc._poslayoutbox.width * width0 /
+                            (widthC*1.8))
+
+
+def _arrange_subplotspecs(gs, hspace=0, wspace=0):
+    """
+    arrange the subplotspec children of this gridspec, and then recursively
+    do the same of any gridspec children of those gridspecs...
+    """
+    sschildren = []
+    for child in gs.children:
+        if child._is_subplotspec_layoutbox():
+            for child2 in child.children:
+                # check for gridspec children...
+                if child2._is_gridspec_layoutbox():
+                    _arrange_subplotspecs(child2, hspace=hspace, wspace=wspace)
+            sschildren += [child]
+    # now arrange the subplots...
+    for child0 in sschildren:
+        ss0 = child0.artist
+        nrows, ncols = ss0.get_gridspec().get_geometry()
+        if ss0.num2 is None:
+            ss0.num2 = ss0.num1
+        rowNum0min, colNum0min = divmod(ss0.num1, ncols)
+        rowNum0max, colNum0max = divmod(ss0.num2, ncols)
+        sschildren = sschildren[1:]
+        for childc in sschildren:
+            ssc = childc.artist
+            rowNumCmin, colNumCmin = divmod(ssc.num1, ncols)
+            if ssc.num2 is None:
+                ssc.num2 = ssc.num1
+            rowNumCmax, colNumCmax = divmod(ssc.num2, ncols)
+            # OK, this tells us the relative layout of ax
+            # with axc
+            thepad = wspace / ncols
+            if colNum0max < colNumCmin:
+                layoutbox.hstack([ss0._layoutbox, ssc._layoutbox],
+                        padding=thepad)
+            if colNumCmax < colNum0min:
+                layoutbox.hstack([ssc._layoutbox, ss0._layoutbox],
+                        padding=thepad)
+
+            ####
+            # vertical alignment
+            thepad = hspace / nrows
+            if rowNum0max < rowNumCmin:
+                layoutbox.vstack([ss0._layoutbox,
+                                 ssc._layoutbox],
+                                 padding=thepad)
+            if rowNumCmax < rowNum0min:
+                layoutbox.vstack([ssc._layoutbox,
+                                  ss0._layoutbox],
+                                  padding=thepad)
+
+
+def layoutcolorbarsingle(ax, cax, shrink, aspect, location, pad=0.05):
+    """
+    Do the layout for a colorbar, to not oeverly pollute colorbar.py
+
+    `pad` is in fraction of the original axis size.
+    """
+    axlb = ax._layoutbox
+    axpos = ax._poslayoutbox
+    axsslb = ax.get_subplotspec()._layoutbox
+    lb = layoutbox.LayoutBox(
+            parent=axsslb,
+            name=axsslb.name + '.cbar',
+            artist=cax)
+
+    if location in ('left', 'right'):
+        lbpos = layoutbox.LayoutBox(
+                parent=lb,
+                name=lb.name + '.pos',
+                tightwidth=False,
+                pos=True,
+                subplot=False,
+                artist=cax)
+
+        if location == 'right':
+            # arrange to right of parent axis
+            layoutbox.hstack([axlb, lb], padding=pad * axlb.width,
+                             strength='strong')
+        else:
+            layoutbox.hstack([lb, axlb], padding=pad * axlb.width)
+        # constrain the height and center...
+        layoutbox.match_heights([axpos, lbpos], [1, shrink])
+        layoutbox.align([axpos, lbpos], 'v_center')
+        # set the width of the pos box
+        lbpos.constrain_width(shrink * axpos.height * (1/aspect),
+                              strength='strong')
+    elif location in ('bottom', 'top'):
+        lbpos = layoutbox.LayoutBox(
+                parent=lb,
+                name=lb.name + '.pos',
+                tightheight=True,
+                pos=True,
+                subplot=False,
+                artist=cax)
+
+        if location == 'bottom':
+            layoutbox.vstack([axlb, lb], padding=pad * axlb.height)
+        else:
+            layoutbox.vstack([lb, axlb], padding=pad * axlb.height)
+        # constrain the height and center...
+        layoutbox.match_widths([axpos, lbpos],
+                               [1, shrink], strength='strong')
+        layoutbox.align([axpos, lbpos], 'h_center')
+        # set the height of the pos box
+        lbpos.constrain_height(axpos.width * aspect * shrink,
+                                strength='medium')
+
+    return lb, lbpos
+
+
+def _getmaxminrowcolumn(axs):
+    # helper to get the min/max rows and columns of a list of axes.
+    maxrow = -100000
+    minrow = 1000000
+    maxax = None
+    minax = None
+    maxcol = -100000
+    mincol = 1000000
+    maxax_col = None
+    minax_col = None
+
+    for ax in axs:
+        subspec = ax.get_subplotspec()
+        nrows, ncols, row_start, row_stop, col_start, col_stop = \
+            subspec.get_rows_columns()
+        if row_stop > maxrow:
+            maxrow = row_stop
+            maxax = ax
+        if row_start < minrow:
+            minrow = row_start
+            minax = ax
+        if col_stop > maxcol:
+            maxcol = col_stop
+            maxax_col = ax
+        if col_start < mincol:
+            mincol = col_start
+            minax_col = ax
+    return (minrow, maxrow, minax, maxax, mincol, maxcol, minax_col, maxax_col)
+
+
+def layoutcolorbargridspec(parents, cax, shrink, aspect, location, pad=0.05):
+    """
+    Do the layout for a colorbar, to not oeverly pollute colorbar.py
+
+    `pad` is in fraction of the original axis size.
+    """
+
+    gs = parents[0].get_subplotspec().get_gridspec()
+    # parent layout box....
+    gslb = gs._layoutbox
+
+    lb = layoutbox.LayoutBox(parent=gslb.parent,
+                             name=gslb.parent.name + '.cbar',
+                             artist=cax)
+    # figure out the row and column extent of the parents.
+    (minrow, maxrow, minax_row, maxax_row,
+     mincol, maxcol, minax_col, maxax_col) = _getmaxminrowcolumn(parents)
+
+    if location in ('left', 'right'):
+        lbpos = layoutbox.LayoutBox(
+                parent=lb,
+                name=lb.name + '.pos',
+                tightwidth=False,
+                pos=True,
+                subplot=False,
+                artist=cax)
+        for ax in parents:
+            if location == 'right':
+                order = [ax._layoutbox, lb]
+            else:
+                order = [lb, ax._layoutbox]
+            layoutbox.hstack(order, padding=pad * gslb.width,
+                         strength='strong')
+        # constrain the height and center...
+        # This isn't quite right.  We'd like the colorbar
+        # pos to line up w/ the axes poss, not the size of the
+        # gs.
+
+        # Horizontal Layout: need to check all the axes in this gridspec
+        for ch in gslb.children:
+            subspec = ch.artist
+            nrows, ncols, row_start, row_stop, col_start, col_stop = \
+                subspec.get_rows_columns()
+            if location == 'right':
+                if col_stop <= maxcol:
+                    order = [subspec._layoutbox, lb]
+                    # arrange to right of the parents
+                if col_start > maxcol:
+                    order = [lb, subspec._layoutbox]
+            elif location == 'left':
+                if col_start >= mincol:
+                    order = [lb, subspec._layoutbox]
+                if col_stop < mincol:
+                    order = [subspec._layoutbox, lb]
+            layoutbox.hstack(order, padding=pad * gslb.width,
+                             strength='strong')
+
+        # Vertical layout:
+        maxposlb = minax_row._poslayoutbox
+        minposlb = maxax_row._poslayoutbox
+        # now we want the height of the colorbar pos to be
+        # set by the top and bottom of the min/max axes...
+        # bottom            top
+        #     b             t
+        # h = (top-bottom)*shrink
+        # b = bottom + (top-bottom - h) / 2.
+        lbpos.constrain_height(
+                (maxposlb.top - minposlb.bottom) *
+                shrink, strength='strong')
+        lbpos.constrain_bottom(
+                (maxposlb.top - minposlb.bottom) *
+                (1 - shrink)/2 + minposlb.bottom,
+                strength='strong')
+
+        # set the width of the pos box
+        lbpos.constrain_width(lbpos.height * (shrink / aspect),
+                              strength='strong')
+    elif location in ('bottom', 'top'):
+        lbpos = layoutbox.LayoutBox(
+                parent=lb,
+                name=lb.name + '.pos',
+                tightheight=True,
+                pos=True,
+                subplot=False,
+                artist=cax)
+
+        for ax in parents:
+            if location == 'bottom':
+                order = [ax._layoutbox, lb]
+            else:
+                order = [lb, ax._layoutbox]
+            layoutbox.vstack(order, padding=pad * gslb.width,
+                         strength='strong')
+
+        # Vertical Layout: need to check all the axes in this gridspec
+        for ch in gslb.children:
+            subspec = ch.artist
+            nrows, ncols, row_start, row_stop, col_start, col_stop = \
+                subspec.get_rows_columns()
+            if location == 'bottom':
+                if row_stop <= minrow:
+                    order = [subspec._layoutbox, lb]
+                if row_start > maxrow:
+                    order = [lb, subspec._layoutbox]
+            elif location == 'top':
+                if row_stop < minrow:
+                    order = [subspec._layoutbox, lb]
+                if row_start >= maxrow:
+                    order = [lb, subspec._layoutbox]
+            layoutbox.vstack(order, padding=pad * gslb.width,
+                             strength='strong')
+
+        # Do horizontal layout...
+        maxposlb = maxax_col._poslayoutbox
+        minposlb = minax_col._poslayoutbox
+        lbpos.constrain_width((maxposlb.right - minposlb.left) *
+                              shrink)
+        lbpos.constrain_left(
+                (maxposlb.right - minposlb.left) *
+                (1-shrink)/2 + minposlb.left)
+        # set the height of the pos box
+        lbpos.constrain_height(lbpos.width * shrink * aspect,
+                               strength='medium')
+
+    return lb, lbpos

utils/venv/lib/python3.6/site-packages/matplotlib/_layoutbox.py

@@ -0,0 +1,735 @@
+"""
+
+Conventions:
+
+"constrain_x" means to constrain the variable with either
+another kiwisolver variable, or a float.  i.e. `constrain_width(0.2)`
+will set a constraint that the width has to be 0.2 and this constraint is
+permanent - i.e. it will not be removed if it becomes obsolete.
+
+"edit_x" means to set x to a value (just a float), and that this value can
+change.  So `edit_width(0.2)` will set width to be 0.2, but `edit_width(0.3)`
+will allow it to change to 0.3 later.  Note that these values are still just
+"suggestions" in `kiwisolver` parlance, and could be over-ridden by
+other constrains.
+
+"""
+
+import itertools
+import kiwisolver as kiwi
+import logging
+import numpy as np
+import warnings
+
+import matplotlib
+
+_log = logging.getLogger(__name__)
+
+
+# renderers can be complicated
+def get_renderer(fig):
+    if fig._cachedRenderer:
+        renderer = fig._cachedRenderer
+    else:
+        canvas = fig.canvas
+        if canvas and hasattr(canvas, "get_renderer"):
+            renderer = canvas.get_renderer()
+        else:
+            # not sure if this can happen
+            # seems to with PDF...
+            _log.info("constrained_layout : falling back to Agg renderer")
+            from matplotlib.backends.backend_agg import FigureCanvasAgg
+            canvas = FigureCanvasAgg(fig)
+            renderer = canvas.get_renderer()
+
+    return renderer
+
+
+class LayoutBox(object):
+    """
+    Basic rectangle representation using kiwi solver variables
+    """
+
+    def __init__(self, parent=None, name='', tightwidth=False,
+                 tightheight=False, artist=None,
+                 lower_left=(0, 0), upper_right=(1, 1), pos=False,
+                 subplot=False, h_pad=None, w_pad=None):
+        Variable = kiwi.Variable
+        self.parent = parent
+        self.name = name
+        sn = self.name + '_'
+        if parent is None:
+            self.solver = kiwi.Solver()
+            self.constrained_layout_called = 0
+        else:
+            self.solver = parent.solver
+            self.constrained_layout_called = None
+            # parent wants to know about this child!
+            parent.add_child(self)
+        # keep track of artist associated w/ this layout.  Can be none
+        self.artist = artist
+        # keep track if this box is supposed to be a pos that is constrained
+        # by the parent.
+        self.pos = pos
+        # keep track of whether we need to match this subplot up with others.
+        self.subplot = subplot
+
+        # we need the str below for Py 2 which complains the string is unicode
+        self.top = Variable(str(sn + 'top'))
+        self.bottom = Variable(str(sn + 'bottom'))
+        self.left = Variable(str(sn + 'left'))
+        self.right = Variable(str(sn + 'right'))
+
+        self.width = Variable(str(sn + 'width'))
+        self.height = Variable(str(sn + 'height'))
+        self.h_center = Variable(str(sn + 'h_center'))
+        self.v_center = Variable(str(sn + 'v_center'))
+
+        self.min_width = Variable(str(sn + 'min_width'))
+        self.min_height = Variable(str(sn + 'min_height'))
+        self.pref_width = Variable(str(sn + 'pref_width'))
+        self.pref_height = Variable(str(sn + 'pref_height'))
+        # margis are only used for axes-position layout boxes.  maybe should
+        # be a separate subclass:
+        self.left_margin = Variable(str(sn + 'left_margin'))
+        self.right_margin = Variable(str(sn + 'right_margin'))
+        self.bottom_margin = Variable(str(sn + 'bottom_margin'))
+        self.top_margin = Variable(str(sn + 'top_margin'))
+        # mins
+        self.left_margin_min = Variable(str(sn + 'left_margin_min'))
+        self.right_margin_min = Variable(str(sn + 'right_margin_min'))
+        self.bottom_margin_min = Variable(str(sn + 'bottom_margin_min'))
+        self.top_margin_min = Variable(str(sn + 'top_margin_min'))
+
+        right, top = upper_right
+        left, bottom = lower_left
+        self.tightheight = tightheight
+        self.tightwidth = tightwidth
+        self.add_constraints()
+        self.children = []
+        self.subplotspec = None
+        if self.pos:
+            self.constrain_margins()
+        self.h_pad = h_pad
+        self.w_pad = w_pad
+
+    def constrain_margins(self):
+        """
+        Only do this for pos.  This sets a variable distance
+        margin between the position of the axes and the outer edge of
+        the axes.
+
+        Margins are variable because they change with the fogure size.
+
+        Margin minimums are set to make room for axes decorations.  However,
+        the margins can be larger if we are mathicng the position size to
+        otehr axes.
+        """
+        sol = self.solver
+
+        # left
+        if not sol.hasEditVariable(self.left_margin_min):
+            sol.addEditVariable(self.left_margin_min, 'strong')
+            sol.suggestValue(self.left_margin_min, 0.0001)
+        c = (self.left_margin == self.left - self.parent.left)
+        self.solver.addConstraint(c | 'required')
+        c = (self.left_margin >= self.left_margin_min)
+        self.solver.addConstraint(c | 'strong')
+
+        # right
+        if not sol.hasEditVariable(self.right_margin_min):
+            sol.addEditVariable(self.right_margin_min, 'strong')
+            sol.suggestValue(self.right_margin_min, 0.0001)
+        c = (self.right_margin == self.parent.right - self.right)
+        self.solver.addConstraint(c | 'required')
+        c = (self.right_margin >= self.right_margin_min)
+        self.solver.addConstraint(c | 'required')
+        # bottom
+        if not sol.hasEditVariable(self.bottom_margin_min):
+            sol.addEditVariable(self.bottom_margin_min, 'strong')
+            sol.suggestValue(self.bottom_margin_min, 0.0001)
+        c = (self.bottom_margin == self.bottom - self.parent.bottom)
+        self.solver.addConstraint(c | 'required')
+        c = (self.bottom_margin >= self.bottom_margin_min)
+        self.solver.addConstraint(c | 'required')
+        # top
+        if not sol.hasEditVariable(self.top_margin_min):
+            sol.addEditVariable(self.top_margin_min, 'strong')
+            sol.suggestValue(self.top_margin_min, 0.0001)
+        c = (self.top_margin == self.parent.top - self.top)
+        self.solver.addConstraint(c | 'required')
+        c = (self.top_margin >= self.top_margin_min)
+        self.solver.addConstraint(c | 'required')
+
+    def add_child(self, child):
+        self.children += [child]
+
+    def remove_child(self, child):
+        try:
+            self.children.remove(child)
+        except ValueError:
+            _log.info("Tried to remove child that doesn't belong to parent")
+
+    def add_constraints(self):
+        sol = self.solver
+        # never let width and height go negative.
+        for i in [self.min_width, self.min_height]:
+            sol.addEditVariable(i, 1e9)
+            sol.suggestValue(i, 0.0)
+        # define relation ships between things thing width and right and left
+        self.hard_constraints()
+        # self.soft_constraints()
+        if self.parent:
+            self.parent_constrain()
+        # sol.updateVariables()
+
+    def parent_constrain(self):
+        parent = self.parent
+        hc = [self.left >= parent.left,
+              self.bottom >= parent.bottom,
+              self.top <= parent.top,
+              self.right <= parent.right]
+        for c in hc:
+            self.solver.addConstraint(c | 'required')
+
+    def hard_constraints(self):
+        hc = [self.width == self.right - self.left,
+              self.height == self.top - self.bottom,
+              self.h_center == (self.left + self.right) * 0.5,
+              self.v_center == (self.top + self.bottom) * 0.5,
+              self.width >= self.min_width,
+              self.height >= self.min_height]
+        for c in hc:
+            self.solver.addConstraint(c | 'required')
+
+    def soft_constraints(self):
+        sol = self.solver
+        if self.tightwidth:
+            suggest = 0.
+        else:
+            suggest = 20.
+        c = (self.pref_width == suggest)
+        for i in c:
+            sol.addConstraint(i | 'required')
+        if self.tightheight:
+            suggest = 0.
+        else:
+            suggest = 20.
+        c = (self.pref_height == suggest)
+        for i in c:
+            sol.addConstraint(i | 'required')
+
+        c = [(self.width >= suggest),
+             (self.height >= suggest)]
+        for i in c:
+            sol.addConstraint(i | 150000)
+
+    def set_parent(self, parent):
+        ''' replace the parent of this with the new parent
+        '''
+        self.parent = parent
+        self.parent_constrain()
+
+    def constrain_geometry(self, left, bottom, right, top, strength='strong'):
+        hc = [self.left == left,
+              self.right == right,
+              self.bottom == bottom,
+              self.top == top]
+        for c in hc:
+            self.solver.addConstraint((c | strength))
+        # self.solver.updateVariables()
+
+    def constrain_same(self, other, strength='strong'):
+        """
+        Make the layoutbox have same position as other layoutbox
+        """
+        hc = [self.left == other.left,
+              self.right == other.right,
+              self.bottom == other.bottom,
+              self.top == other.top]
+        for c in hc:
+            self.solver.addConstraint((c | strength))
+
+    def constrain_left_margin(self, margin, strength='strong'):
+        c = (self.left == self.parent.left + margin)
+        self.solver.addConstraint(c | strength)
+
+    def edit_left_margin_min(self, margin):
+        self.solver.suggestValue(self.left_margin_min, margin)
+
+    def constrain_right_margin(self, margin, strength='strong'):
+        c = (self.right == self.parent.right - margin)
+        self.solver.addConstraint(c | strength)
+
+    def edit_right_margin_min(self, margin):
+        self.solver.suggestValue(self.right_margin_min, margin)
+
+    def constrain_bottom_margin(self, margin, strength='strong'):
+        c = (self.bottom == self.parent.bottom + margin)
+        self.solver.addConstraint(c | strength)
+
+    def edit_bottom_margin_min(self, margin):
+        self.solver.suggestValue(self.bottom_margin_min, margin)
+
+    def constrain_top_margin(self, margin, strength='strong'):
+        c = (self.top == self.parent.top - margin)
+        self.solver.addConstraint(c | strength)
+
+    def edit_top_margin_min(self, margin):
+        self.solver.suggestValue(self.top_margin_min, margin)
+
+    def get_rect(self):
+        return (self.left.value(), self.bottom.value(),
+                self.width.value(), self.height.value())
+
+    def update_variables(self):
+        '''
+        Update *all* the variables that are part of the solver this LayoutBox
+        is created with
+        '''
+        self.solver.updateVariables()
+
+    def edit_height(self, height, strength='strong'):
+        '''
+        Set the height of the layout box.
+
+        This is done as an editable variable so that the value can change
+        due to resizing.
+        '''
+        sol = self.solver
+        for i in [self.height]:
+            if not sol.hasEditVariable(i):
+                sol.addEditVariable(i, strength)
+        sol.suggestValue(self.height, height)
+
+    def constrain_height(self, height, strength='strong'):
+        '''
+        Constrain the height of the layout box.  height is
+        either a float or a layoutbox.height.
+        '''
+        c = (self.height == height)
+        self.solver.addConstraint(c | strength)
+
+    def constrain_height_min(self, height, strength='strong'):
+        c = (self.height >= height)
+        self.solver.addConstraint(c | strength)
+
+    def edit_width(self, width, strength='strong'):
+        sol = self.solver
+        for i in [self.width]:
+            if not sol.hasEditVariable(i):
+                sol.addEditVariable(i, strength)
+        sol.suggestValue(self.width, width)
+
+    def constrain_width(self, width, strength='strong'):
+        '''
+        Constrain the width of the layout box.  `width` is
+        either a float or a layoutbox.width.
+        '''
+        c = (self.width == width)
+        self.solver.addConstraint(c | strength)
+
+    def constrain_width_min(self, width, strength='strong'):
+        c = (self.width >= width)
+        self.solver.addConstraint(c | strength)
+
+    def constrain_left(self, left,  strength='strong'):
+        c = (self.left == left)
+        self.solver.addConstraint(c | strength)
+
+    def constrain_bottom(self, bottom, strength='strong'):
+        c = (self.bottom == bottom)
+        self.solver.addConstraint(c | strength)
+
+    def constrain_right(self, right, strength='strong'):
+        c = (self.right == right)
+        self.solver.addConstraint(c | strength)
+
+    def constrain_top(self, top, strength='strong'):
+        c = (self.top == top)
+        self.solver.addConstraint(c | strength)
+
+    def _is_subplotspec_layoutbox(self):
+        '''
+        Helper to check if this layoutbox is the layoutbox of a
+        subplotspec
+        '''
+        name = (self.name).split('.')[-1]
+        return name[:2] == 'ss'
+
+    def _is_gridspec_layoutbox(self):
+        '''
+        Helper to check if this layoutbox is the layoutbox of a
+        gridspec
+        '''
+        name = (self.name).split('.')[-1]
+        return name[:8] == 'gridspec'
+
+    def find_child_subplots(self):
+        '''
+        Find children of this layout box that are subplots.  We want to line
+        poss up, and this is an easy way to find them all.
+        '''
+        if self.subplot:
+            subplots = [self]
+        else:
+            subplots = []
+        for child in self.children:
+            subplots += child.find_child_subplots()
+        return subplots
+
+    def layout_from_subplotspec(self, subspec,
+                                name='', artist=None, pos=False):
+        '''  Make a layout box from a subplotspec. The layout box is
+        constrained to be a fraction of the width/height of the parent,
+        and be a fraction of the parent width/height from the left/bottom
+        of the parent.  Therefore the parent can move around and the
+        layout for the subplot spec should move with it.
+
+        The parent is *usually* the gridspec that made the subplotspec.??
+        '''
+        lb = LayoutBox(parent=self, name=name, artist=artist, pos=pos)
+        gs = subspec.get_gridspec()
+        nrows, ncols = gs.get_geometry()
+        parent = self.parent
+
+        # OK, now, we want to set the position of this subplotspec
+        # based on its subplotspec parameters.  The new gridspec will inherit.
+
+        # from gridspec.  prob should be new method in gridspec
+        left = 0.0
+        right = 1.0
+        bottom = 0.0
+        top = 1.0
+        totWidth = right-left
+        totHeight = top-bottom
+        hspace = 0.
+        wspace = 0.
+
+        # calculate accumulated heights of columns
+        cellH = totHeight / (nrows + hspace * (nrows - 1))
+        sepH = hspace*cellH
+
+        if gs._row_height_ratios is not None:
+            netHeight = cellH * nrows
+            tr = float(sum(gs._row_height_ratios))
+            cellHeights = [netHeight*r/tr for r in gs._row_height_ratios]
+        else:
+            cellHeights = [cellH] * nrows
+
+        sepHeights = [0] + ([sepH] * (nrows - 1))
+        cellHs = np.add.accumulate(np.ravel(
+                list(zip(sepHeights, cellHeights))))
+
+        # calculate accumulated widths of rows
+        cellW = totWidth/(ncols + wspace * (ncols - 1))
+        sepW = wspace*cellW
+
+        if gs._col_width_ratios is not None:
+            netWidth = cellW * ncols
+            tr = float(sum(gs._col_width_ratios))
+            cellWidths = [netWidth * r / tr for r in gs._col_width_ratios]
+        else:
+            cellWidths = [cellW] * ncols
+
+        sepWidths = [0] + ([sepW] * (ncols - 1))
+        cellWs = np.add.accumulate(np.ravel(list(zip(sepWidths, cellWidths))))
+
+        figTops = [top - cellHs[2 * rowNum] for rowNum in range(nrows)]
+        figBottoms = [top - cellHs[2 * rowNum + 1] for rowNum in range(nrows)]
+        figLefts = [left + cellWs[2 * colNum] for colNum in range(ncols)]
+        figRights = [left + cellWs[2 * colNum + 1] for colNum in range(ncols)]
+
+        rowNum, colNum = divmod(subspec.num1, ncols)
+        figBottom = figBottoms[rowNum]
+        figTop = figTops[rowNum]
+        figLeft = figLefts[colNum]
+        figRight = figRights[colNum]
+
+        if subspec.num2 is not None:
+
+            rowNum2, colNum2 = divmod(subspec.num2, ncols)
+            figBottom2 = figBottoms[rowNum2]
+            figTop2 = figTops[rowNum2]
+            figLeft2 = figLefts[colNum2]
+            figRight2 = figRights[colNum2]
+
+            figBottom = min(figBottom, figBottom2)
+            figLeft = min(figLeft, figLeft2)
+            figTop = max(figTop, figTop2)
+            figRight = max(figRight, figRight2)
+        # These are numbers relative to 0,0,1,1.  Need to constrain
+        # relative to parent.
+
+        width = figRight - figLeft
+        height = figTop - figBottom
+        parent = self.parent
+        cs = [self.left == parent.left + parent.width * figLeft,
+              self.bottom == parent.bottom + parent.height * figBottom,
+              self.width == parent.width * width,
+              self.height == parent.height * height]
+        for c in cs:
+            self.solver.addConstraint((c | 'required'))
+
+        return lb
+
+    def __repr__(self):
+        args = (self.name, self.left.value(), self.bottom.value(),
+                self.right.value(), self.top.value())
+        return ('LayoutBox: %25s, (left: %1.3f) (bot: %1.3f) '
+               '(right: %1.3f)  (top: %1.3f) ') % args
+
+
+# Utility functions that act on layoutboxes...
+def hstack(boxes, padding=0, strength='strong'):
+    '''
+    Stack LayoutBox instances from left to right.
+    `padding` is in figure-relative units.
+    '''
+
+    for i in range(1, len(boxes)):
+        c = (boxes[i-1].right + padding <= boxes[i].left)
+        boxes[i].solver.addConstraint(c | strength)
+
+
+def hpack(boxes, padding=0, strength='strong'):
+    '''
+    Stack LayoutBox instances from left to right.
+    '''
+
+    for i in range(1, len(boxes)):
+        c = (boxes[i-1].right + padding == boxes[i].left)
+        boxes[i].solver.addConstraint(c | strength)
+
+
+def vstack(boxes, padding=0, strength='strong'):
+    '''
+    Stack LayoutBox instances from top to bottom
+    '''
+
+    for i in range(1, len(boxes)):
+        c = (boxes[i-1].bottom - padding >= boxes[i].top)
+        boxes[i].solver.addConstraint(c | strength)
+
+
+def vpack(boxes, padding=0, strength='strong'):
+    '''
+    Stack LayoutBox instances from top to bottom
+    '''
+
+    for i in range(1, len(boxes)):
+        c = (boxes[i-1].bottom - padding >= boxes[i].top)
+        boxes[i].solver.addConstraint(c | strength)
+
+
+def match_heights(boxes, height_ratios=None, strength='medium'):
+    '''
+    Stack LayoutBox instances from top to bottom
+    '''
+
+    if height_ratios is None:
+        height_ratios = np.ones(len(boxes))
+    for i in range(1, len(boxes)):
+        c = (boxes[i-1].height ==
+             boxes[i].height*height_ratios[i-1]/height_ratios[i])
+        boxes[i].solver.addConstraint(c | strength)
+
+
+def match_widths(boxes, width_ratios=None, strength='medium'):
+    '''
+    Stack LayoutBox instances from top to bottom
+    '''
+
+    if width_ratios is None:
+        width_ratios = np.ones(len(boxes))
+    for i in range(1, len(boxes)):
+        c = (boxes[i-1].width ==
+             boxes[i].width*width_ratios[i-1]/width_ratios[i])
+        boxes[i].solver.addConstraint(c | strength)
+
+
+def vstackeq(boxes, padding=0, height_ratios=None):
+    vstack(boxes, padding=padding)
+    match_heights(boxes, height_ratios=height_ratios)
+
+
+def hstackeq(boxes, padding=0, width_ratios=None):
+    hstack(boxes, padding=padding)
+    match_widths(boxes, width_ratios=width_ratios)
+
+
+def align(boxes, attr, strength='strong'):
+    cons = []
+    for box in boxes[1:]:
+        cons = (getattr(boxes[0], attr) == getattr(box, attr))
+        boxes[0].solver.addConstraint(cons | strength)
+
+
+def match_top_margins(boxes, levels=1):
+    box0 = boxes[0]
+    top0 = box0
+    for n in range(levels):
+        top0 = top0.parent
+    for box in boxes[1:]:
+        topb = box
+        for n in range(levels):
+            topb = topb.parent
+        c = (box0.top-top0.top == box.top-topb.top)
+        box0.solver.addConstraint(c | 'strong')
+
+
+def match_bottom_margins(boxes, levels=1):
+    box0 = boxes[0]
+    top0 = box0
+    for n in range(levels):
+        top0 = top0.parent
+    for box in boxes[1:]:
+        topb = box
+        for n in range(levels):
+            topb = topb.parent
+        c = (box0.bottom-top0.bottom == box.bottom-topb.bottom)
+        box0.solver.addConstraint(c | 'strong')
+
+
+def match_left_margins(boxes, levels=1):
+    box0 = boxes[0]
+    top0 = box0
+    for n in range(levels):
+        top0 = top0.parent
+    for box in boxes[1:]:
+        topb = box
+        for n in range(levels):
+            topb = topb.parent
+        c = (box0.left-top0.left == box.left-topb.left)
+        box0.solver.addConstraint(c | 'strong')
+
+
+def match_right_margins(boxes, levels=1):
+    box0 = boxes[0]
+    top0 = box0
+    for n in range(levels):
+        top0 = top0.parent
+    for box in boxes[1:]:
+        topb = box
+        for n in range(levels):
+            topb = topb.parent
+        c = (box0.right-top0.right == box.right-topb.right)
+        box0.solver.addConstraint(c | 'strong')
+
+
+def match_width_margins(boxes, levels=1):
+    match_left_margins(boxes, levels=levels)
+    match_right_margins(boxes, levels=levels)
+
+
+def match_height_margins(boxes, levels=1):
+    match_top_margins(boxes, levels=levels)
+    match_bottom_margins(boxes, levels=levels)
+
+
+def match_margins(boxes, levels=1):
+    match_width_margins(boxes, levels=levels)
+    match_height_margins(boxes, levels=levels)
+
+
+_layoutboxobjnum = itertools.count()
+
+
+def seq_id():
+    '''
+    Generate a short sequential id for layoutbox objects...
+    '''
+
+    global _layoutboxobjnum
+
+    return ('%06d' % (next(_layoutboxobjnum)))
+
+
+def print_children(lb):
+    '''
+    Print the children of the layoutbox
+    '''
+    print(lb)
+    for child in lb.children:
+        print_children(child)
+
+
+def nonetree(lb):
+    '''
+    Make all elements in this tree none...  This signals not to do any more
+    layout.
+    '''
+    if lb is not None:
+        if lb.parent is None:
+            # Clear the solver.  Hopefully this garbage collects.
+            lb.solver.reset()
+            nonechildren(lb)
+        else:
+            nonetree(lb.parent)
+
+
+def nonechildren(lb):
+    for child in lb.children:
+        nonechildren(child)
+    lb.artist._layoutbox = None
+    lb = None
+
+
+def print_tree(lb):
+    '''
+    Print the tree of layoutboxes
+    '''
+
+    if lb.parent is None:
+        print('LayoutBox Tree\n')
+        print('==============\n')
+        print_children(lb)
+        print('\n')
+    else:
+        print_tree(lb.parent)
+
+
+def plot_children(fig, box, level=0, printit=True):
+    '''
+    Simple plotting to show where boxes are
+    '''
+    import matplotlib
+    import matplotlib.pyplot as plt
+
+    if isinstance(fig, matplotlib.figure.Figure):
+        ax = fig.add_axes([0., 0., 1., 1.])
+        ax.set_facecolor([1., 1., 1., 0.7])
+        ax.set_alpha(0.3)
+        fig.draw(fig.canvas.get_renderer())
+    else:
+        ax = fig
+
+    import matplotlib.patches as patches
+    colors = plt.rcParams["axes.prop_cycle"].by_key()["color"]
+    if printit:
+        print("Level:", level)
+    for child in box.children:
+        rect = child.get_rect()
+        if printit:
+            print(child)
+        ax.add_patch(
+            patches.Rectangle(
+                (child.left.value(), child.bottom.value()),   # (x,y)
+                child.width.value(),          # width
+                child.height.value(),          # height
+                fc='none',
+                alpha=0.8,
+                ec=colors[level]
+            )
+        )
+        if level > 0:
+            name = child.name.split('.')[-1]
+            if level % 2 == 0:
+                ax.text(child.left.value(), child.bottom.value(), name,
+                        size=12-level, color=colors[level])
+            else:
+                ax.text(child.right.value(), child.top.value(), name,
+                        ha='right', va='top', size=12-level,
+                        color=colors[level])
+
+        plot_children(ax, child, level=level+1, printit=printit)

utils/venv/lib/python3.6/site-packages/matplotlib/_pylab_helpers.py

@@ -0,0 +1,134 @@
+"""
+Manage figures for pyplot interface.
+"""
+
+import atexit
+import gc
+import sys
+
+
+class Gcf(object):
+    """
+    Singleton to manage a set of integer-numbered figures.
+
+    This class is never instantiated; it consists of two class
+    attributes (a list and a dictionary), and a set of static
+    methods that operate on those attributes, accessing them
+    directly as class attributes.
+
+    Attributes:
+
+        *figs*:
+          dictionary of the form {*num*: *manager*, ...}
+
+        *_activeQue*:
+          list of *managers*, with active one at the end
+
+    """
+    _activeQue = []
+    figs = {}
+
+    @classmethod
+    def get_fig_manager(cls, num):
+        """
+        If figure manager *num* exists, make it the active
+        figure and return the manager; otherwise return *None*.
+        """
+        manager = cls.figs.get(num, None)
+        if manager is not None:
+            cls.set_active(manager)
+        return manager
+
+    @classmethod
+    def destroy(cls, num):
+        """
+        Try to remove all traces of figure *num*.
+
+        In the interactive backends, this is bound to the
+        window "destroy" and "delete" events.
+        """
+        if not cls.has_fignum(num):
+            return
+        manager = cls.figs[num]
+        manager.canvas.mpl_disconnect(manager._cidgcf)
+        cls._activeQue.remove(manager)
+        del cls.figs[num]
+        manager.destroy()
+        gc.collect(1)
+
+    @classmethod
+    def destroy_fig(cls, fig):
+        "*fig* is a Figure instance"
+        num = next((manager.num for manager in cls.figs.values()
+                    if manager.canvas.figure == fig), None)
+        if num is not None:
+            cls.destroy(num)
+
+    @classmethod
+    def destroy_all(cls):
+        # this is need to ensure that gc is available in corner cases
+        # where modules are being torn down after install with easy_install
+        import gc  # noqa
+        for manager in list(cls.figs.values()):
+            manager.canvas.mpl_disconnect(manager._cidgcf)
+            manager.destroy()
+
+        cls._activeQue = []
+        cls.figs.clear()
+        gc.collect(1)
+
+    @classmethod
+    def has_fignum(cls, num):
+        """
+        Return *True* if figure *num* exists.
+        """
+        return num in cls.figs
+
+    @classmethod
+    def get_all_fig_managers(cls):
+        """
+        Return a list of figure managers.
+        """
+        return list(cls.figs.values())
+
+    @classmethod
+    def get_num_fig_managers(cls):
+        """
+        Return the number of figures being managed.
+        """
+        return len(cls.figs)
+
+    @classmethod
+    def get_active(cls):
+        """
+        Return the manager of the active figure, or *None*.
+        """
+        if len(cls._activeQue) == 0:
+            return None
+        else:
+            return cls._activeQue[-1]
+
+    @classmethod
+    def set_active(cls, manager):
+        """
+        Make the figure corresponding to *manager* the active one.
+        """
+        oldQue = cls._activeQue[:]
+        cls._activeQue = []
+        for m in oldQue:
+            if m != manager:
+                cls._activeQue.append(m)
+        cls._activeQue.append(manager)
+        cls.figs[manager.num] = manager
+
+    @classmethod
+    def draw_all(cls, force=False):
+        """
+        Redraw all figures registered with the pyplot
+        state machine.
+        """
+        for f_mgr in cls.get_all_fig_managers():
+            if force or f_mgr.canvas.figure.stale:
+                f_mgr.canvas.draw_idle()
+
+atexit.register(Gcf.destroy_all)

utils/venv/lib/python3.6/site-packages/matplotlib/_version.py

@@ -0,0 +1,21 @@
+
+# This file was generated by 'versioneer.py' (0.15) from
+# revision-control system data, or from the parent directory name of an
+# unpacked source archive. Distribution tarballs contain a pre-generated copy
+# of this file.
+
+import json
+import sys
+
+version_json = '''
+{
+ "dirty": false,
+ "error": null,
+ "full-revisionid": "8858a0d1bdd149a0897789e8503ac586be14676d",
+ "version": "3.0.2"
+}
+'''  # END VERSION_JSON
+
+
+def get_versions():
+    return json.loads(version_json)

utils/venv/lib/python3.6/site-packages/matplotlib/afm.py

@@ -0,0 +1,562 @@
+"""
+This is a python interface to Adobe Font Metrics Files.  Although a
+number of other python implementations exist, and may be more complete
+than this, it was decided not to go with them because they were
+either:
+
+  1) copyrighted or used a non-BSD compatible license
+
+  2) had too many dependencies and a free standing lib was needed
+
+  3) Did more than needed and it was easier to write afresh rather than
+     figure out how to get just what was needed.
+
+It is pretty easy to use, and requires only built-in python libs:
+
+    >>> from matplotlib import rcParams
+    >>> import os.path
+    >>> afm_fname = os.path.join(rcParams['datapath'],
+    ...                         'fonts', 'afm', 'ptmr8a.afm')
+    >>>
+    >>> from matplotlib.afm import AFM
+    >>> with open(afm_fname, 'rb') as fh:
+    ...     afm = AFM(fh)
+    >>> afm.string_width_height('What the heck?')
+    (6220.0, 694)
+    >>> afm.get_fontname()
+    'Times-Roman'
+    >>> afm.get_kern_dist('A', 'f')
+    0
+    >>> afm.get_kern_dist('A', 'y')
+    -92.0
+    >>> afm.get_bbox_char('!')
+    [130, -9, 238, 676]
+
+As in the Adobe Font Metrics File Format Specification, all dimensions
+are given in units of 1/1000 of the scale factor (point size) of the font
+being used.
+"""
+
+from collections import namedtuple
+import re
+import sys
+
+from ._mathtext_data import uni2type1
+from matplotlib.cbook import deprecated
+
+
+# some afm files have floats where we are expecting ints -- there is
+# probably a better way to handle this (support floats, round rather
+# than truncate).  But I don't know what the best approach is now and
+# this change to _to_int should at least prevent mpl from crashing on
+# these JDH (2009-11-06)
+
+def _to_int(x):
+    return int(float(x))
+
+
+_to_float = float
+
+
+def _to_str(x):
+    return x.decode('utf8')
+
+
+def _to_list_of_ints(s):
+    s = s.replace(b',', b' ')
+    return [_to_int(val) for val in s.split()]
+
+
+def _to_list_of_floats(s):
+    return [_to_float(val) for val in s.split()]
+
+
+def _to_bool(s):
+    if s.lower().strip() in (b'false', b'0', b'no'):
+        return False
+    else:
+        return True
+
+
+def _sanity_check(fh):
+    """
+    Check if the file at least looks like AFM.
+    If not, raise :exc:`RuntimeError`.
+    """
+
+    # Remember the file position in case the caller wants to
+    # do something else with the file.
+    pos = fh.tell()
+    try:
+        line = next(fh)
+    finally:
+        fh.seek(pos, 0)
+
+    # AFM spec, Section 4: The StartFontMetrics keyword [followed by a
+    # version number] must be the first line in the file, and the
+    # EndFontMetrics keyword must be the last non-empty line in the
+    # file. We just check the first line.
+    if not line.startswith(b'StartFontMetrics'):
+        raise RuntimeError('Not an AFM file')
+
+
+def _parse_header(fh):
+    """
+    Reads the font metrics header (up to the char metrics) and returns
+    a dictionary mapping *key* to *val*.  *val* will be converted to the
+    appropriate python type as necessary; e.g.:
+
+        * 'False'->False
+        * '0'->0
+        * '-168 -218 1000 898'-> [-168, -218, 1000, 898]
+
+    Dictionary keys are
+
+      StartFontMetrics, FontName, FullName, FamilyName, Weight,
+      ItalicAngle, IsFixedPitch, FontBBox, UnderlinePosition,
+      UnderlineThickness, Version, Notice, EncodingScheme, CapHeight,
+      XHeight, Ascender, Descender, StartCharMetrics
+
+    """
+    headerConverters = {
+        b'StartFontMetrics': _to_float,
+        b'FontName': _to_str,
+        b'FullName': _to_str,
+        b'FamilyName': _to_str,
+        b'Weight': _to_str,
+        b'ItalicAngle': _to_float,
+        b'IsFixedPitch': _to_bool,
+        b'FontBBox': _to_list_of_ints,
+        b'UnderlinePosition': _to_int,
+        b'UnderlineThickness': _to_int,
+        b'Version': _to_str,
+        b'Notice': _to_str,
+        b'EncodingScheme': _to_str,
+        b'CapHeight': _to_float,  # Is the second version a mistake, or
+        b'Capheight': _to_float,  # do some AFM files contain 'Capheight'? -JKS
+        b'XHeight': _to_float,
+        b'Ascender': _to_float,
+        b'Descender': _to_float,
+        b'StdHW': _to_float,
+        b'StdVW': _to_float,
+        b'StartCharMetrics': _to_int,
+        b'CharacterSet': _to_str,
+        b'Characters': _to_int,
+        }
+
+    d = {}
+    for line in fh:
+        line = line.rstrip()
+        if line.startswith(b'Comment'):
+            continue
+        lst = line.split(b' ', 1)
+
+        key = lst[0]
+        if len(lst) == 2:
+            val = lst[1]
+        else:
+            val = b''
+
+        try:
+            d[key] = headerConverters[key](val)
+        except ValueError:
+            print('Value error parsing header in AFM:', key, val,
+                  file=sys.stderr)
+            continue
+        except KeyError:
+            print('Found an unknown keyword in AFM header (was %r)' % key,
+                  file=sys.stderr)
+            continue
+        if key == b'StartCharMetrics':
+            return d
+    raise RuntimeError('Bad parse')
+
+
+CharMetrics = namedtuple('CharMetrics', 'width, name, bbox')
+CharMetrics.__doc__ = """
+    Represents the character metrics of a single character.
+
+    Notes
+    -----
+    The fields do currently only describe a subset of character metrics
+    information defined in the AFM standard.
+    """
+CharMetrics.width.__doc__ = """The character width (WX)."""
+CharMetrics.name.__doc__ = """The character name (N)."""
+CharMetrics.bbox.__doc__ = """
+    The bbox of the character (B) as a tuple (*llx*, *lly*, *urx*, *ury*)."""
+
+
+def _parse_char_metrics(fh):
+    """
+    Parse the given filehandle for character metrics information and return
+    the information as dicts.
+
+    It is assumed that the file cursor is on the line behind
+    'StartCharMetrics'.
+
+    Returns
+    -------
+    ascii_d : dict
+         A mapping "ASCII num of the character" to `.CharMetrics`.
+    name_d : dict
+         A mapping "character name" to `.CharMetrics`.
+
+    Notes
+    -----
+    This function is incomplete per the standard, but thus far parses
+    all the sample afm files tried.
+    """
+    required_keys = {'C', 'WX', 'N', 'B'}
+
+    ascii_d = {}
+    name_d = {}
+    for line in fh:
+        # We are defensively letting values be utf8. The spec requires
+        # ascii, but there are non-compliant fonts in circulation
+        line = _to_str(line.rstrip())  # Convert from byte-literal
+        if line.startswith('EndCharMetrics'):
+            return ascii_d, name_d
+        # Split the metric line into a dictionary, keyed by metric identifiers
+        vals = dict(s.strip().split(' ', 1) for s in line.split(';') if s)
+        # There may be other metrics present, but only these are needed
+        if not required_keys.issubset(vals):
+            raise RuntimeError('Bad char metrics line: %s' % line)
+        num = _to_int(vals['C'])
+        wx = _to_float(vals['WX'])
+        name = vals['N']
+        bbox = _to_list_of_floats(vals['B'])
+        bbox = list(map(int, bbox))
+        metrics = CharMetrics(wx, name, bbox)
+        # Workaround: If the character name is 'Euro', give it the
+        # corresponding character code, according to WinAnsiEncoding (see PDF
+        # Reference).
+        if name == 'Euro':
+            num = 128
+        if num != -1:
+            ascii_d[num] = metrics
+        name_d[name] = metrics
+    raise RuntimeError('Bad parse')
+
+
+def _parse_kern_pairs(fh):
+    """
+    Return a kern pairs dictionary; keys are (*char1*, *char2*) tuples and
+    values are the kern pair value.  For example, a kern pairs line like
+    ``KPX A y -50``
+
+    will be represented as::
+
+      d[ ('A', 'y') ] = -50
+
+    """
+
+    line = next(fh)
+    if not line.startswith(b'StartKernPairs'):
+        raise RuntimeError('Bad start of kern pairs data: %s' % line)
+
+    d = {}
+    for line in fh:
+        line = line.rstrip()
+        if not line:
+            continue
+        if line.startswith(b'EndKernPairs'):
+            next(fh)  # EndKernData
+            return d
+        vals = line.split()
+        if len(vals) != 4 or vals[0] != b'KPX':
+            raise RuntimeError('Bad kern pairs line: %s' % line)
+        c1, c2, val = _to_str(vals[1]), _to_str(vals[2]), _to_float(vals[3])
+        d[(c1, c2)] = val
+    raise RuntimeError('Bad kern pairs parse')
+
+
+CompositePart = namedtuple('CompositePart', 'name, dx, dy')
+CompositePart.__doc__ = """
+    Represents the information on a composite element of a composite char."""
+CompositePart.name.__doc__ = """Name of the part, e.g. 'acute'."""
+CompositePart.dx.__doc__ = """x-displacement of the part from the origin."""
+CompositePart.dy.__doc__ = """y-displacement of the part from the origin."""
+
+
+def _parse_composites(fh):
+    """
+    Parse the given filehandle for composites information return them as a
+    dict.
+
+    It is assumed that the file cursor is on the line behind 'StartComposites'.
+
+    Returns
+    -------
+    composites : dict
+        A dict mapping composite character names to a parts list. The parts
+        list is a list of `.CompositePart` entries describing the parts of
+        the composite.
+
+    Example
+    -------
+    A composite definition line::
+
+      CC Aacute 2 ; PCC A 0 0 ; PCC acute 160 170 ;
+
+    will be represented as::
+
+      composites['Aacute'] = [CompositePart(name='A', dx=0, dy=0),
+                              CompositePart(name='acute', dx=160, dy=170)]
+
+    """
+    composites = {}
+    for line in fh:
+        line = line.rstrip()
+        if not line:
+            continue
+        if line.startswith(b'EndComposites'):
+            return composites
+        vals = line.split(b';')
+        cc = vals[0].split()
+        name, numParts = cc[1], _to_int(cc[2])
+        pccParts = []
+        for s in vals[1:-1]:
+            pcc = s.split()
+            part = CompositePart(pcc[1], _to_float(pcc[2]), _to_float(pcc[3]))
+            pccParts.append(part)
+        composites[name] = pccParts
+
+    raise RuntimeError('Bad composites parse')
+
+
+def _parse_optional(fh):
+    """
+    Parse the optional fields for kern pair data and composites.
+
+    Returns
+    -------
+    kern_data : dict
+        A dict containing kerning information. May be empty.
+        See `._parse_kern_pairs`.
+    composites : dict
+        A dict containing composite information. May be empty.
+        See `._parse_composites`.
+    """
+    optional = {
+        b'StartKernData': _parse_kern_pairs,
+        b'StartComposites':  _parse_composites,
+        }
+
+    d = {b'StartKernData': {},
+         b'StartComposites': {}}
+    for line in fh:
+        line = line.rstrip()
+        if not line:
+            continue
+        key = line.split()[0]
+
+        if key in optional:
+            d[key] = optional[key](fh)
+
+    return d[b'StartKernData'], d[b'StartComposites']
+
+
+@deprecated("3.0", "Use the class AFM instead.")
+def parse_afm(fh):
+    return _parse_afm(fh)
+
+
+def _parse_afm(fh):
+    """
+    Parse the Adobe Font Metrics file in file handle *fh*.
+
+    Returns
+    -------
+    header : dict
+        A header dict. See :func:`_parse_header`.
+    cmetrics_by_ascii : dict
+        From :func:`_parse_char_metrics`.
+    cmetrics_by_name : dict
+        From :func:`_parse_char_metrics`.
+    kernpairs : dict
+        From :func:`_parse_kern_pairs`.
+    composites : dict
+        From :func:`_parse_composites`
+
+    """
+    _sanity_check(fh)
+    header = _parse_header(fh)
+    cmetrics_by_ascii, cmetrics_by_name = _parse_char_metrics(fh)
+    kernpairs, composites = _parse_optional(fh)
+    return header, cmetrics_by_ascii, cmetrics_by_name, kernpairs, composites
+
+
+class AFM(object):
+
+    def __init__(self, fh):
+        """Parse the AFM file in file object *fh*."""
+        (self._header,
+         self._metrics,
+         self._metrics_by_name,
+         self._kern,
+         self._composite) = _parse_afm(fh)
+
+    def get_bbox_char(self, c, isord=False):
+        if not isord:
+            c = ord(c)
+        return self._metrics[c].bbox
+
+    def string_width_height(self, s):
+        """
+        Return the string width (including kerning) and string height
+        as a (*w*, *h*) tuple.
+        """
+        if not len(s):
+            return 0, 0
+        total_width = 0
+        namelast = None
+        miny = 1e9
+        maxy = 0
+        for c in s:
+            if c == '\n':
+                continue
+            wx, name, bbox = self._metrics[ord(c)]
+
+            total_width += wx + self._kern.get((namelast, name), 0)
+            l, b, w, h = bbox
+            miny = min(miny, b)
+            maxy = max(maxy, b + h)
+
+            namelast = name
+
+        return total_width, maxy - miny
+
+    def get_str_bbox_and_descent(self, s):
+        """Return the string bounding box and the maximal descent."""
+        if not len(s):
+            return 0, 0, 0, 0, 0
+        total_width = 0
+        namelast = None
+        miny = 1e9
+        maxy = 0
+        left = 0
+        if not isinstance(s, str):
+            s = _to_str(s)
+        for c in s:
+            if c == '\n':
+                continue
+            name = uni2type1.get(ord(c), 'question')
+            try:
+                wx, _, bbox = self._metrics_by_name[name]
+            except KeyError:
+                name = 'question'
+                wx, _, bbox = self._metrics_by_name[name]
+            total_width += wx + self._kern.get((namelast, name), 0)
+            l, b, w, h = bbox
+            left = min(left, l)
+            miny = min(miny, b)
+            maxy = max(maxy, b + h)
+
+            namelast = name
+
+        return left, miny, total_width, maxy - miny, -miny
+
+    def get_str_bbox(self, s):
+        """Return the string bounding box."""
+        return self.get_str_bbox_and_descent(s)[:4]
+
+    def get_name_char(self, c, isord=False):
+        """Get the name of the character, i.e., ';' is 'semicolon'."""
+        if not isord:
+            c = ord(c)
+        return self._metrics[c].name
+
+    def get_width_char(self, c, isord=False):
+        """
+        Get the width of the character from the character metric WX field.
+        """
+        if not isord:
+            c = ord(c)
+        return self._metrics[c].width
+
+    def get_width_from_char_name(self, name):
+        """Get the width of the character from a type1 character name."""
+        return self._metrics_by_name[name].width
+
+    def get_height_char(self, c, isord=False):
+        """Get the bounding box (ink) height of character *c* (space is 0)."""
+        if not isord:
+            c = ord(c)
+        return self._metrics[c].bbox[-1]
+
+    def get_kern_dist(self, c1, c2):
+        """
+        Return the kerning pair distance (possibly 0) for chars *c1* and *c2*.
+        """
+        name1, name2 = self.get_name_char(c1), self.get_name_char(c2)
+        return self.get_kern_dist_from_name(name1, name2)
+
+    def get_kern_dist_from_name(self, name1, name2):
+        """
+        Return the kerning pair distance (possibly 0) for chars
+        *name1* and *name2*.
+        """
+        return self._kern.get((name1, name2), 0)
+
+    def get_fontname(self):
+        """Return the font name, e.g., 'Times-Roman'."""
+        return self._header[b'FontName']
+
+    def get_fullname(self):
+        """Return the font full name, e.g., 'Times-Roman'."""
+        name = self._header.get(b'FullName')
+        if name is None:  # use FontName as a substitute
+            name = self._header[b'FontName']
+        return name
+
+    def get_familyname(self):
+        """Return the font family name, e.g., 'Times'."""
+        name = self._header.get(b'FamilyName')
+        if name is not None:
+            return name
+
+        # FamilyName not specified so we'll make a guess
+        name = self.get_fullname()
+        extras = (r'(?i)([ -](regular|plain|italic|oblique|bold|semibold|'
+                  r'light|ultralight|extra|condensed))+$')
+        return re.sub(extras, '', name)
+
+    @property
+    def family_name(self):
+        """The font family name, e.g., 'Times'."""
+        return self.get_familyname()
+
+    def get_weight(self):
+        """Return the font weight, e.g., 'Bold' or 'Roman'."""
+        return self._header[b'Weight']
+
+    def get_angle(self):
+        """Return the fontangle as float."""
+        return self._header[b'ItalicAngle']
+
+    def get_capheight(self):
+        """Return the cap height as float."""
+        return self._header[b'CapHeight']
+
+    def get_xheight(self):
+        """Return the xheight as float."""
+        return self._header[b'XHeight']
+
+    def get_underline_thickness(self):
+        """Return the underline thickness as float."""
+        return self._header[b'UnderlineThickness']
+
+    def get_horizontal_stem_width(self):
+        """
+        Return the standard horizontal stem width as float, or *None* if
+        not specified in AFM file.
+        """
+        return self._header.get(b'StdHW', None)
+
+    def get_vertical_stem_width(self):
+        """
+        Return the standard vertical stem width as float, or *None* if
+        not specified in AFM file.
+        """
+        return self._header.get(b'StdVW', None)

utils/venv/lib/python3.6/site-packages/matplotlib/axes/__init__.py

@@ -0,0 +1,2 @@
+from ._subplots import *
+from ._axes import *

utils/venv/lib/python3.6/site-packages/matplotlib/axes/_subplots.py

@@ -0,0 +1,242 @@
+import functools
+import warnings
+
+from matplotlib import docstring
+import matplotlib.artist as martist
+from matplotlib.axes._axes import Axes
+from matplotlib.gridspec import GridSpec, SubplotSpec
+import matplotlib._layoutbox as layoutbox
+
+
+class SubplotBase(object):
+    """
+    Base class for subplots, which are :class:`Axes` instances with
+    additional methods to facilitate generating and manipulating a set
+    of :class:`Axes` within a figure.
+    """
+
+    def __init__(self, fig, *args, **kwargs):
+        """
+        *fig* is a :class:`matplotlib.figure.Figure` instance.
+
+        *args* is the tuple (*numRows*, *numCols*, *plotNum*), where
+        the array of subplots in the figure has dimensions *numRows*,
+        *numCols*, and where *plotNum* is the number of the subplot
+        being created.  *plotNum* starts at 1 in the upper left
+        corner and increases to the right.
+
+        If *numRows* <= *numCols* <= *plotNum* < 10, *args* can be the
+        decimal integer *numRows* * 100 + *numCols* * 10 + *plotNum*.
+        """
+
+        self.figure = fig
+
+        if len(args) == 1:
+            if isinstance(args[0], SubplotSpec):
+                self._subplotspec = args[0]
+            else:
+                try:
+                    s = str(int(args[0]))
+                    rows, cols, num = map(int, s)
+                except ValueError:
+                    raise ValueError('Single argument to subplot must be '
+                        'a 3-digit integer')
+                self._subplotspec = GridSpec(rows, cols,
+                                             figure=self.figure)[num - 1]
+                # num - 1 for converting from MATLAB to python indexing
+        elif len(args) == 3:
+            rows, cols, num = args
+            rows = int(rows)
+            cols = int(cols)
+            if isinstance(num, tuple) and len(num) == 2:
+                num = [int(n) for n in num]
+                self._subplotspec = GridSpec(
+                        rows, cols,
+                        figure=self.figure)[(num[0] - 1):num[1]]
+            else:
+                if num < 1 or num > rows*cols:
+                    raise ValueError(
+                        ("num must be 1 <= num <= {maxn}, not {num}"
+                        ).format(maxn=rows*cols, num=num))
+                self._subplotspec = GridSpec(
+                        rows, cols, figure=self.figure)[int(num) - 1]
+                # num - 1 for converting from MATLAB to python indexing
+        else:
+            raise ValueError('Illegal argument(s) to subplot: %s' % (args,))
+
+        self.update_params()
+
+        # _axes_class is set in the subplot_class_factory
+        self._axes_class.__init__(self, fig, self.figbox, **kwargs)
+        # add a layout box to this, for both the full axis, and the poss
+        # of the axis.  We need both because the axes may become smaller
+        # due to parasitic axes and hence no longer fill the subplotspec.
+        if self._subplotspec._layoutbox is None:
+            self._layoutbox = None
+            self._poslayoutbox = None
+        else:
+            name = self._subplotspec._layoutbox.name + '.ax'
+            name = name + layoutbox.seq_id()
+            self._layoutbox = layoutbox.LayoutBox(
+                    parent=self._subplotspec._layoutbox,
+                    name=name,
+                    artist=self)
+            self._poslayoutbox = layoutbox.LayoutBox(
+                    parent=self._layoutbox,
+                    name=self._layoutbox.name+'.pos',
+                    pos=True, subplot=True, artist=self)
+
+    def __reduce__(self):
+        # get the first axes class which does not inherit from a subplotbase
+        axes_class = next(
+            c for c in type(self).__mro__
+            if issubclass(c, Axes) and not issubclass(c, SubplotBase))
+        return (_picklable_subplot_class_constructor,
+                (axes_class,),
+                self.__getstate__())
+
+    def get_geometry(self):
+        """get the subplot geometry, e.g., 2,2,3"""
+        rows, cols, num1, num2 = self.get_subplotspec().get_geometry()
+        return rows, cols, num1 + 1  # for compatibility
+
+    # COVERAGE NOTE: Never used internally or from examples
+    def change_geometry(self, numrows, numcols, num):
+        """change subplot geometry, e.g., from 1,1,1 to 2,2,3"""
+        self._subplotspec = GridSpec(numrows, numcols,
+                                     figure=self.figure)[num - 1]
+        self.update_params()
+        self.set_position(self.figbox)
+
+    def get_subplotspec(self):
+        """get the SubplotSpec instance associated with the subplot"""
+        return self._subplotspec
+
+    def set_subplotspec(self, subplotspec):
+        """set the SubplotSpec instance associated with the subplot"""
+        self._subplotspec = subplotspec
+
+    def get_gridspec(self):
+        """get the GridSpec instance associated with the subplot"""
+        return self._subplotspec.get_gridspec()
+
+    def update_params(self):
+        """update the subplot position from fig.subplotpars"""
+
+        self.figbox, self.rowNum, self.colNum, self.numRows, self.numCols = \
+            self.get_subplotspec().get_position(self.figure,
+                                                return_all=True)
+
+    def is_first_col(self):
+        return self.colNum == 0
+
+    def is_first_row(self):
+        return self.rowNum == 0
+
+    def is_last_row(self):
+        return self.rowNum == self.numRows - 1
+
+    def is_last_col(self):
+        return self.colNum == self.numCols - 1
+
+    # COVERAGE NOTE: Never used internally.
+    def label_outer(self):
+        """Only show "outer" labels and tick labels.
+
+        x-labels are only kept for subplots on the last row; y-labels only for
+        subplots on the first column.
+        """
+        lastrow = self.is_last_row()
+        firstcol = self.is_first_col()
+        if not lastrow:
+            for label in self.get_xticklabels(which="both"):
+                label.set_visible(False)
+            self.get_xaxis().get_offset_text().set_visible(False)
+            self.set_xlabel("")
+        if not firstcol:
+            for label in self.get_yticklabels(which="both"):
+                label.set_visible(False)
+            self.get_yaxis().get_offset_text().set_visible(False)
+            self.set_ylabel("")
+
+    def _make_twin_axes(self, *kl, **kwargs):
+        """
+        Make a twinx axes of self. This is used for twinx and twiny.
+        """
+        from matplotlib.projections import process_projection_requirements
+        if 'sharex' in kwargs and 'sharey' in kwargs:
+            # The following line is added in v2.2 to avoid breaking Seaborn,
+            # which currently uses this internal API.
+            if kwargs["sharex"] is not self and kwargs["sharey"] is not self:
+                raise ValueError("Twinned Axes may share only one axis.")
+        kl = (self.get_subplotspec(),) + kl
+        projection_class, kwargs, key = process_projection_requirements(
+            self.figure, *kl, **kwargs)
+
+        ax2 = subplot_class_factory(projection_class)(self.figure,
+                                                      *kl, **kwargs)
+        self.figure.add_subplot(ax2)
+        self.set_adjustable('datalim')
+        ax2.set_adjustable('datalim')
+
+        if self._layoutbox is not None and ax2._layoutbox is not None:
+            # make the layout boxes be explicitly the same
+            ax2._layoutbox.constrain_same(self._layoutbox)
+            ax2._poslayoutbox.constrain_same(self._poslayoutbox)
+
+        self._twinned_axes.join(self, ax2)
+        return ax2
+
+
+# this here to support cartopy which was using a private part of the
+# API to register their Axes subclasses.
+
+# In 3.1 this should be changed to a dict subclass that warns on use
+# In 3.3 to a dict subclass that raises a useful exception on use
+# In 3.4 should be removed
+
+# The slow timeline is to give cartopy enough time to get several
+# release out before we break them.
+_subplot_classes = {}
+
+
+@functools.lru_cache(None)
+def subplot_class_factory(axes_class=None):
+    """
+    This makes a new class that inherits from `.SubplotBase` and the
+    given axes_class (which is assumed to be a subclass of `.axes.Axes`).
+    This is perhaps a little bit roundabout to make a new class on
+    the fly like this, but it means that a new Subplot class does
+    not have to be created for every type of Axes.
+    """
+    if axes_class is None:
+        axes_class = Axes
+    try:
+        # Avoid creating two different instances of GeoAxesSubplot...
+        # Only a temporary backcompat fix.  This should be removed in
+        # 3.4
+        return next(cls for cls in SubplotBase.__subclasses__()
+                    if cls.__bases__ == (SubplotBase, axes_class))
+    except StopIteration:
+        return type("%sSubplot" % axes_class.__name__,
+                    (SubplotBase, axes_class),
+                    {'_axes_class': axes_class})
+
+
+# This is provided for backward compatibility
+Subplot = subplot_class_factory()
+
+
+def _picklable_subplot_class_constructor(axes_class):
+    """
+    This stub class exists to return the appropriate subplot class when called
+    with an axes class. This is purely to allow pickling of Axes and Subplots.
+    """
+    subplot_class = subplot_class_factory(axes_class)
+    return subplot_class.__new__(subplot_class)
+
+
+docstring.interpd.update(Axes=martist.kwdoc(Axes))
+docstring.dedent_interpd(Axes.__init__)
+
+docstring.interpd.update(Subplot=martist.kwdoc(Axes))

utils/venv/lib/python3.6/site-packages/matplotlib/backend_managers.py

@@ -0,0 +1,433 @@
+"""
+`ToolManager`
+    Class that makes the bridge between user interaction (key press,
+    toolbar clicks, ..) and the actions in response to the user inputs.
+"""
+
+import warnings
+
+import matplotlib.cbook as cbook
+import matplotlib.widgets as widgets
+from matplotlib.rcsetup import validate_stringlist
+import matplotlib.backend_tools as tools
+
+
+class ToolEvent(object):
+    """Event for tool manipulation (add/remove)"""
+    def __init__(self, name, sender, tool, data=None):
+        self.name = name
+        self.sender = sender
+        self.tool = tool
+        self.data = data
+
+
+class ToolTriggerEvent(ToolEvent):
+    """Event to inform that a tool has been triggered"""
+    def __init__(self, name, sender, tool, canvasevent=None, data=None):
+        ToolEvent.__init__(self, name, sender, tool, data)
+        self.canvasevent = canvasevent
+
+
+class ToolManagerMessageEvent(object):
+    """
+    Event carrying messages from toolmanager
+
+    Messages usually get displayed to the user by the toolbar
+    """
+    def __init__(self, name, sender, message):
+        self.name = name
+        self.sender = sender
+        self.message = message
+
+
+class ToolManager(object):
+    """
+    Helper class that groups all the user interactions for a Figure.
+
+    Attributes
+    ----------
+    figure: `Figure`
+    keypresslock: `widgets.LockDraw`
+        `LockDraw` object to know if the `canvas` key_press_event is locked
+    messagelock: `widgets.LockDraw`
+        `LockDraw` object to know if the message is available to write
+    """
+
+    def __init__(self, figure=None):
+        warnings.warn('Treat the new Tool classes introduced in v1.5 as ' +
+                       'experimental for now, the API will likely change in ' +
+                       'version 2.1 and perhaps the rcParam as well')
+
+        self._key_press_handler_id = None
+
+        self._tools = {}
+        self._keys = {}
+        self._toggled = {}
+        self._callbacks = cbook.CallbackRegistry()
+
+        # to process keypress event
+        self.keypresslock = widgets.LockDraw()
+        self.messagelock = widgets.LockDraw()
+
+        self._figure = None
+        self.set_figure(figure)
+
+    @property
+    def canvas(self):
+        """Canvas managed by FigureManager"""
+        if not self._figure:
+            return None
+        return self._figure.canvas
+
+    @property
+    def figure(self):
+        """Figure that holds the canvas"""
+        return self._figure
+
+    @figure.setter
+    def figure(self, figure):
+        self.set_figure(figure)
+
+    def set_figure(self, figure, update_tools=True):
+        """
+        Bind the given figure to the tools.
+
+        Parameters
+        ----------
+        figure : `.Figure`
+        update_tools : bool
+            Force tools to update figure
+        """
+        if self._key_press_handler_id:
+            self.canvas.mpl_disconnect(self._key_press_handler_id)
+        self._figure = figure
+        if figure:
+            self._key_press_handler_id = self.canvas.mpl_connect(
+                'key_press_event', self._key_press)
+        if update_tools:
+            for tool in self._tools.values():
+                tool.figure = figure
+
+    def toolmanager_connect(self, s, func):
+        """
+        Connect event with string *s* to *func*.
+
+        Parameters
+        ----------
+        s : String
+            Name of the event
+
+            The following events are recognized
+
+            - 'tool_message_event'
+            - 'tool_removed_event'
+            - 'tool_added_event'
+
+            For every tool added a new event is created
+
+            - 'tool_trigger_TOOLNAME`
+              Where TOOLNAME is the id of the tool.
+
+        func : function
+            Function to be called with signature
+            def func(event)
+        """
+        return self._callbacks.connect(s, func)
+
+    def toolmanager_disconnect(self, cid):
+        """
+        Disconnect callback id *cid*
+
+        Example usage::
+
+            cid = toolmanager.toolmanager_connect('tool_trigger_zoom',
+                                                  on_press)
+            #...later
+            toolmanager.toolmanager_disconnect(cid)
+        """
+        return self._callbacks.disconnect(cid)
+
+    def message_event(self, message, sender=None):
+        """ Emit a `ToolManagerMessageEvent`"""
+        if sender is None:
+            sender = self
+
+        s = 'tool_message_event'
+        event = ToolManagerMessageEvent(s, sender, message)
+        self._callbacks.process(s, event)
+
+    @property
+    def active_toggle(self):
+        """Currently toggled tools"""
+
+        return self._toggled
+
+    def get_tool_keymap(self, name):
+        """
+        Get the keymap associated with the specified tool
+
+        Parameters
+        ----------
+        name : string
+            Name of the Tool
+
+        Returns
+        -------
+        list : list of keys associated with the Tool
+        """
+
+        keys = [k for k, i in self._keys.items() if i == name]
+        return keys
+
+    def _remove_keys(self, name):
+        for k in self.get_tool_keymap(name):
+            del self._keys[k]
+
+    def update_keymap(self, name, *keys):
+        """
+        Set the keymap to associate with the specified tool
+
+        Parameters
+        ----------
+        name : string
+            Name of the Tool
+        keys : keys to associate with the Tool
+        """
+
+        if name not in self._tools:
+            raise KeyError('%s not in Tools' % name)
+
+        self._remove_keys(name)
+
+        for key in keys:
+            for k in validate_stringlist(key):
+                if k in self._keys:
+                    warnings.warn('Key %s changed from %s to %s' %
+                                  (k, self._keys[k], name))
+                self._keys[k] = name
+
+    def remove_tool(self, name):
+        """
+        Remove tool from `ToolManager`
+
+        Parameters
+        ----------
+        name : string
+            Name of the Tool
+        """
+
+        tool = self.get_tool(name)
+        tool.destroy()
+
+        # If is a toggle tool and toggled, untoggle
+        if getattr(tool, 'toggled', False):
+            self.trigger_tool(tool, 'toolmanager')
+
+        self._remove_keys(name)
+
+        s = 'tool_removed_event'
+        event = ToolEvent(s, self, tool)
+        self._callbacks.process(s, event)
+
+        del self._tools[name]
+
+    def add_tool(self, name, tool, *args, **kwargs):
+        """
+        Add *tool* to `ToolManager`
+
+        If successful adds a new event `tool_trigger_name` where **name** is
+        the **name** of the tool, this event is fired everytime
+        the tool is triggered.
+
+        Parameters
+        ----------
+        name : str
+            Name of the tool, treated as the ID, has to be unique
+        tool : class_like, i.e. str or type
+            Reference to find the class of the Tool to added.
+
+        Notes
+        -----
+        args and kwargs get passed directly to the tools constructor.
+
+        See Also
+        --------
+        matplotlib.backend_tools.ToolBase : The base class for tools.
+        """
+
+        tool_cls = self._get_cls_to_instantiate(tool)
+        if not tool_cls:
+            raise ValueError('Impossible to find class for %s' % str(tool))
+
+        if name in self._tools:
+            warnings.warn('A "Tool class" with the same name already exists, '
+                          'not added')
+            return self._tools[name]
+
+        tool_obj = tool_cls(self, name, *args, **kwargs)
+        self._tools[name] = tool_obj
+
+        if tool_cls.default_keymap is not None:
+            self.update_keymap(name, tool_cls.default_keymap)
+
+        # For toggle tools init the radio_group in self._toggled
+        if isinstance(tool_obj, tools.ToolToggleBase):
+            # None group is not mutually exclusive, a set is used to keep track
+            # of all toggled tools in this group
+            if tool_obj.radio_group is None:
+                self._toggled.setdefault(None, set())
+            else:
+                self._toggled.setdefault(tool_obj.radio_group, None)
+
+            # If initially toggled
+            if tool_obj.toggled:
+                self._handle_toggle(tool_obj, None, None, None)
+        tool_obj.set_figure(self.figure)
+
+        self._tool_added_event(tool_obj)
+        return tool_obj
+
+    def _tool_added_event(self, tool):
+        s = 'tool_added_event'
+        event = ToolEvent(s, self, tool)
+        self._callbacks.process(s, event)
+
+    def _handle_toggle(self, tool, sender, canvasevent, data):
+        """
+        Toggle tools, need to untoggle prior to using other Toggle tool
+        Called from trigger_tool
+
+        Parameters
+        ----------
+        tool: Tool object
+        sender: object
+            Object that wishes to trigger the tool
+        canvasevent : Event
+            Original Canvas event or None
+        data : Object
+            Extra data to pass to the tool when triggering
+        """
+
+        radio_group = tool.radio_group
+        # radio_group None is not mutually exclusive
+        # just keep track of toggled tools in this group
+        if radio_group is None:
+            if tool.name in self._toggled[None]:
+                self._toggled[None].remove(tool.name)
+            else:
+                self._toggled[None].add(tool.name)
+            return
+
+        # If the tool already has a toggled state, untoggle it
+        if self._toggled[radio_group] == tool.name:
+            toggled = None
+        # If no tool was toggled in the radio_group
+        # toggle it
+        elif self._toggled[radio_group] is None:
+            toggled = tool.name
+        # Other tool in the radio_group is toggled
+        else:
+            # Untoggle previously toggled tool
+            self.trigger_tool(self._toggled[radio_group],
+                              self,
+                              canvasevent,
+                              data)
+            toggled = tool.name
+
+        # Keep track of the toggled tool in the radio_group
+        self._toggled[radio_group] = toggled
+
+    def _get_cls_to_instantiate(self, callback_class):
+        # Find the class that corresponds to the tool
+        if isinstance(callback_class, str):
+            # FIXME: make more complete searching structure
+            if callback_class in globals():
+                callback_class = globals()[callback_class]
+            else:
+                mod = 'backend_tools'
+                current_module = __import__(mod,
+                                            globals(), locals(), [mod], 1)
+
+                callback_class = getattr(current_module, callback_class, False)
+        if callable(callback_class):
+            return callback_class
+        else:
+            return None
+
+    def trigger_tool(self, name, sender=None, canvasevent=None,
+                     data=None):
+        """
+        Trigger a tool and emit the tool_trigger_[name] event
+
+        Parameters
+        ----------
+        name : string
+            Name of the tool
+        sender: object
+            Object that wishes to trigger the tool
+        canvasevent : Event
+            Original Canvas event or None
+        data : Object
+            Extra data to pass to the tool when triggering
+        """
+        tool = self.get_tool(name)
+        if tool is None:
+            return
+
+        if sender is None:
+            sender = self
+
+        self._trigger_tool(name, sender, canvasevent, data)
+
+        s = 'tool_trigger_%s' % name
+        event = ToolTriggerEvent(s, sender, tool, canvasevent, data)
+        self._callbacks.process(s, event)
+
+    def _trigger_tool(self, name, sender=None, canvasevent=None, data=None):
+        """
+        Trigger on a tool
+
+        Method to actually trigger the tool
+        """
+        tool = self.get_tool(name)
+
+        if isinstance(tool, tools.ToolToggleBase):
+            self._handle_toggle(tool, sender, canvasevent, data)
+
+        # Important!!!
+        # This is where the Tool object gets triggered
+        tool.trigger(sender, canvasevent, data)
+
+    def _key_press(self, event):
+        if event.key is None or self.keypresslock.locked():
+            return
+
+        name = self._keys.get(event.key, None)
+        if name is None:
+            return
+        self.trigger_tool(name, canvasevent=event)
+
+    @property
+    def tools(self):
+        """Return the tools controlled by `ToolManager`"""
+
+        return self._tools
+
+    def get_tool(self, name, warn=True):
+        """
+        Return the tool object, also accepts the actual tool for convenience
+
+        Parameters
+        ----------
+        name : str, ToolBase
+            Name of the tool, or the tool itself
+        warn : bool, optional
+            If this method should give warnings.
+        """
+        if isinstance(name, tools.ToolBase) and name.name in self._tools:
+            return name
+        if name not in self._tools:
+            if warn:
+                warnings.warn("ToolManager does not control tool %s" % name)
+            return None
+        return self._tools[name]

utils/venv/lib/python3.6/site-packages/matplotlib/backends/__init__.py

@@ -0,0 +1,107 @@
+import importlib
+import logging
+import os
+import sys
+import traceback
+
+import matplotlib
+from matplotlib import cbook
+from matplotlib.backend_bases import _Backend
+
+_log = logging.getLogger(__name__)
+
+
+# NOTE: plt.switch_backend() (called at import time) will add a "backend"
+# attribute here for backcompat.
+
+
+def _get_running_interactive_framework():
+    """
+    Return the interactive framework whose event loop is currently running, if
+    any, or "headless" if no event loop can be started, or None.
+
+    Returns
+    -------
+    Optional[str]
+        One of the following values: "qt5", "qt4", "gtk3", "wx", "tk",
+        "macosx", "headless", ``None``.
+    """
+    QtWidgets = (sys.modules.get("PyQt5.QtWidgets")
+                 or sys.modules.get("PySide2.QtWidgets"))
+    if QtWidgets and QtWidgets.QApplication.instance():
+        return "qt5"
+    QtGui = (sys.modules.get("PyQt4.QtGui")
+             or sys.modules.get("PySide.QtGui"))
+    if QtGui and QtGui.QApplication.instance():
+        return "qt4"
+    Gtk = (sys.modules.get("gi.repository.Gtk")
+           or sys.modules.get("pgi.repository.Gtk"))
+    if Gtk and Gtk.main_level():
+        return "gtk3"
+    wx = sys.modules.get("wx")
+    if wx and wx.GetApp():
+        return "wx"
+    tkinter = sys.modules.get("tkinter")
+    if tkinter:
+        for frame in sys._current_frames().values():
+            while frame:
+                if frame.f_code == tkinter.mainloop.__code__:
+                    return "tk"
+                frame = frame.f_back
+    if 'matplotlib.backends._macosx' in sys.modules:
+        if sys.modules["matplotlib.backends._macosx"].event_loop_is_running():
+            return "macosx"
+    if sys.platform.startswith("linux") and not os.environ.get("DISPLAY"):
+        return "headless"
+    return None
+
+
+@cbook.deprecated("3.0")
+def pylab_setup(name=None):
+    """
+    Return new_figure_manager, draw_if_interactive and show for pyplot.
+
+    This provides the backend-specific functions that are used by pyplot to
+    abstract away the difference between backends.
+
+    Parameters
+    ----------
+    name : str, optional
+        The name of the backend to use.  If `None`, falls back to
+        ``matplotlib.get_backend()`` (which return :rc:`backend`).
+
+    Returns
+    -------
+    backend_mod : module
+        The module which contains the backend of choice
+
+    new_figure_manager : function
+        Create a new figure manager (roughly maps to GUI window)
+
+    draw_if_interactive : function
+        Redraw the current figure if pyplot is interactive
+
+    show : function
+        Show (and possibly block) any unshown figures.
+    """
+    # Import the requested backend into a generic module object.
+    if name is None:
+        name = matplotlib.get_backend()
+    backend_name = (name[9:] if name.startswith("module://")
+                    else "matplotlib.backends.backend_{}".format(name.lower()))
+    backend_mod = importlib.import_module(backend_name)
+    # Create a local Backend class whose body corresponds to the contents of
+    # the backend module.  This allows the Backend class to fill in the missing
+    # methods through inheritance.
+    Backend = type("Backend", (_Backend,), vars(backend_mod))
+
+    # Need to keep a global reference to the backend for compatibility reasons.
+    # See https://github.com/matplotlib/matplotlib/issues/6092
+    global backend
+    backend = name
+
+    _log.debug('backend %s version %s', name, Backend.backend_version)
+    return (backend_mod,
+            Backend.new_figure_manager,
+            Backend.draw_if_interactive,
+            Backend.show)