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pie_and_polar_charts example code: polar_bar_demo.pyΒΆ

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Pie chart on polar axis

Demo of bar plot on a polar axis.
import numpy as np
import matplotlib.pyplot as plt

# Compute pie slices
N = 20
theta = np.linspace(0.0, 2 * np.pi, N, endpoint=False)
radii = 10 * np.random.rand(N)
width = np.pi / 4 * np.random.rand(N)

ax = plt.subplot(111, projection='polar')
bars =, radii, width=width, bottom=0.0)

# Use custom colors and opacity
for r, bar in zip(radii, bars):
    bar.set_facecolor( / 10.))

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