Hatch Demo

Hatching (pattern filled polygons) is supported currently in the PS, PDF, SVG and Agg backends only.

import matplotlib.pyplot as plt
from matplotlib.patches import Ellipse, Polygon

fig, (ax1, ax2, ax3) = plt.subplots(3)

ax1.bar(range(1, 5), range(1, 5), color='red', edgecolor='black', hatch="/")
ax1.bar(range(1, 5), [6] * 4, bottom=range(1, 5),
        color='blue', edgecolor='black', hatch='//')
ax1.set_xticks([1.5, 2.5, 3.5, 4.5])

bars = ax2.bar(range(1, 5), range(1, 5), color='yellow', ecolor='black') + \
    ax2.bar(range(1, 5), [6] * 4, bottom=range(1, 5),
            color='green', ecolor='black')
ax2.set_xticks([1.5, 2.5, 3.5, 4.5])

patterns = ('-', '+', 'x', '\\', '*', 'o', 'O', '.')
for bar, pattern in zip(bars, patterns):
    bar.set_hatch(pattern)

ax3.fill([1, 3, 3, 1], [1, 1, 2, 2], fill=False, hatch='\\')
ax3.add_patch(Ellipse((4, 1.5), 4, 0.5, fill=False, hatch='*'))
ax3.add_patch(Polygon([[0, 0], [4, 1.1], [6, 2.5], [2, 1.4]], closed=True,
                      fill=False, hatch='/'))
ax3.set_xlim((0, 6))
ax3.set_ylim((0, 2.5))

plt.show()

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References

The use of the following functions, methods, classes and modules is shown in this example:

import matplotlib
matplotlib.patches
matplotlib.patches.Ellipse
matplotlib.patches.Polygon
matplotlib.axes.Axes.add_patch
matplotlib.patches.Patch.set_hatch
matplotlib.axes.Axes.bar
matplotlib.pyplot.bar