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joferkington/masked_hist.py

Created June 10, 2015 21:03
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Quick example of masking 0-count portions of a 2D histogram
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masked_hist.py
import numpy as np
import matplotlib.pyplot as plt
x, y = np.random.normal(0, 1, (2, 1000))
counts, ybins, xbins = np.histogram2d(y, x, bins=30)
counts = np.ma.masked_equal(counts, 0)
fig, ax = plt.subplots()
ax.pcolormesh(xbins, ybins, counts)
plt.show()
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