# -*- coding: utf-8 -*-

from scipy.ndimage import imread

import numpy as np

import matplotlib.pyplot as plt

maxprice = 88.90

minprice = 37.99

import time

start_time = '05.05.2011 12:00:00'

stop_time = '12.02.2017 12:00:00'

pattern = '%d.%m.%Y %H:%M:%S'

epoch = int(time.mktime(time.strptime(start_time, pattern)))

print(epoch)

epoch = int(time.mktime(time.strptime(stop_time, pattern)))

print(epoch)

chart = imread(

"C:/Users/franc/Downloads/camelchart-locale-frasin-b00ql1u4topricetypes-amazonforce-1zero-0w-2725h-1440desired-falselegend-0ilt-0fo-0lang-en2017-02-1200-43-36.png",

flatten=False, mode=None)

raster = (chart.dot([2, 3, 5]) == (99 * 2 + 168 * 3 + 94 * 5))[-1::-2, ::2]

raster = np.array([np.nan, 1])[raster.astype(np.int)]

raster *= np.arange(raster.shape[0])[:, np.newaxis]

mymin = np.nanmin(raster, axis=0)

mymax = np.nanmax(raster, axis=0)

toto = np.vstack((mymax, mymin)).ravel("F")

toto -= np.nanmin(toto)

toto /= np.nanmax(toto)

toto *= maxprice - minprice

toto += minprice

plt.plot(toto)