# coding=utf-8
import matplotlib.pyplot as plt
import numpy as np

# 极轴图
if __name__ == "__main__":
    ax = plt.axes([0.025, 0.025, 0.95, 0.95], polar=True)

    N = 20
    theta = np.arange(0.0, 2 * np.pi, 2 * np.pi / N)
    radii = 10 * np.random.rand(N)
    width = np.pi / 4 * np.random.rand(N)
    bars = plt.bar(theta, radii, width=width, bottom=0.0)

    for r, bar in zip(radii, bars):
        bar.set_facecolor(plt.cm.jet(r / 10.))
        bar.set_alpha(0.5)

    ax.set_xticklabels([])
    ax.set_yticklabels([])
    # savefig('../figures/polar_ex.png',dpi=48)
    plt.show()
