Setting matplotlib colorbar range

Question

I would like to set the matplotlib colorbar range. Here\'s what I have so far:

import numpy as np
import matplotlib.pyplot as plt
x = np.arange(20)
y = np.a         


        

Answer 1

[Sorry, actually a comment to The Red Gator in Virginias answer, but do not have enough reputation to comment]

I was stuck on updating the colorbar of an imshow object after it was drawn and the data changed with imshowobj.set_data(). Using cbarobj.set_clim() indeed updates the colors, but not the ticks or range of the colorbar. Instead, you have to use imshowobj.set_clim() which will update the image and colorbar correctly.

data = np.cumsum(np.ones((10,15)),0)
imshowobj = plt.imshow(data)
cbarobj = plt.colorbar(imshowobj) #adjusts scale to value range, looks OK
# change the data to some data with different value range:
imshowobj.set_data(data/10) #scale is wrong now, shows only dark color
# update colorbar correctly using imshowobj not cbarobj:
#cbarobj.set_clim(0,1) #! image colors will update, but cbar ticks not
imshowobj.set_clim(0,1) #correct