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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

    # Fixing random state for reproducibility
    np.random.seed(19680801)

    # 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 = ax.bar(theta, radii, width=width, bottom=0.0)

    # Use custom colors and opacity
    for r, bar in zip(radii, bars):
        bar.set_facecolor(plt.cm.viridis(r / 10.))
        bar.set_alpha(0.5)

    plt.show()

Total running time of the script: ( 0 minutes 0.030 seconds)

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