You are reading an old version of the documentation (v1.4.3). For the latest version see

We're updating the default styles for Matplotlib 2.0

Learn what to expect in the new updates


Previous topic

pylab_examples example code:

Next topic

pylab_examples example code:

This Page

pylab_examples example code: hist_colormapped.pyΒΆ

(Source code, png, hires.png, pdf)

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

fig, ax = plt.subplots()
Ntotal = 1000
N, bins, patches = ax.hist(np.random.rand(Ntotal), 20)

#I'll color code by height, but you could use any scalar

# we need to normalize the data to 0..1 for the full
# range of the colormap
fracs = N.astype(float)/N.max()
norm = colors.Normalize(fracs.min(), fracs.max())

for thisfrac, thispatch in zip(fracs, patches):
    color = cm.jet(norm(thisfrac))

Keywords: python, matplotlib, pylab, example, codex (see Search examples)