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Colorbar for density plots

asked 2012-10-23 13:57:25 -0600

MelvinSmith gravatar image

Hi!

I would like to know if there is a way to get a colorbar for a density plot. For contour plots this works fine with the colorbar=True option, but for density plots there doesn't seem to be such an option. Can anyone help?

Greetings, Melvin

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answered 2012-10-23 16:20:24 -0600

Shashank gravatar image

I don't know the answer in sage but it is easy in matplotlib

import matplotlib
import matplotlib.cm as cm
import matplotlib.pyplot as plt
import numpy as np


fig = plt.figure()
array=np.zeros((100,100))
for i in range(100):
    for j in range(100):
        array[i][j]=sin(0.1*i)*cos(0.1*j)
#norm=matplotlib.colors.Normalize(0.995,1.0)
im1 = plt.imshow(array, cmap=cm.hot, origin='lower',clip_on=True,filternorm=1)
#im1.set_norm(norm)
plt.colorbar()
plt.savefig('test.png')
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Comments

Want to take a stab at #9150?

kcrisman gravatar imagekcrisman ( 2012-10-23 16:27:55 -0600 )edit

I will try.

Shashank gravatar imageShashank ( 2012-10-23 17:33:01 -0600 )edit
0

answered 2012-10-23 16:27:09 -0600

kcrisman gravatar image

updated 2012-10-23 16:27:21 -0600

This isn't built in, though Trac 9150 has been open for this for quite a while, and it probably wouldn't be too hard to put in.

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Asked: 2012-10-23 13:57:25 -0600

Seen: 225 times

Last updated: Oct 23 '12