import numpy as np
import matplotlib.pyplot as plt
from PIL import Image 

def colorbar(values, colors, filename='output.png', width=3, height=10):
  plt.rcParams["figure.figsize"] = (3, 10)
  plt.rcParams["savefig.pad_inches"] = 0 
  
  values = values.split(';')
  colors = colors.split(';')

  if len(values[-1]) == 0:
    values = values[0:-1]

  if len(colors[-1]) == 0:
    colors = colors[0:-1]

  v = 0
  i = 0
  for value in values:
    b = plt.bar(0, float(value), 10, bottom=v, color=( \
        int(colors[i]) / 255, \
        int(colors[i + 1]) / 255,\
        int(colors[i + 2]) / 255, 1))
    v += float(value)
    i += 3
  
  plt.axis('off')
  plt.autoscale(tight=True)
  plt.savefig(filename)

  im = Image.open(filename)
  im2 = im.rotate(270, expand=True)
  im2.save(filename)