注釈
最後まで をクリックすると完全なサンプルコードをダウンロードできます。
Plotting in polar, decorated¶
An example showing how to plot in polar coordinate, and some decorations.

import numpy as np
import matplotlib
import matplotlib.pyplot as plt
plt.subplot(1, 1, 1, polar=True)
N = 20
theta = np.arange(0.0, 2 * np.pi, 2 * np.pi / N)
rng = np.random.default_rng()
radii = 10 * rng.random(N)
width = np.pi / 4 * rng.random(N)
bars = plt.bar(theta, radii, width=width, bottom=0.0)
jet = matplotlib.colormaps["jet"]
for r, bar in zip(radii, bars, strict=True):
bar.set_facecolor(jet(r / 10.0))
bar.set_alpha(0.5)
plt.gca().set_xticklabels([])
plt.gca().set_yticklabels([])
plt.text(
-0.2,
1.02,
" Polar Axis \n",
horizontalalignment="left",
verticalalignment="top",
size="xx-large",
bbox={"facecolor": "white", "alpha": 1.0},
transform=plt.gca().transAxes,
)
plt.text(
-0.2,
1.01,
"\n\n Plot anything using polar axis ",
horizontalalignment="left",
verticalalignment="top",
size="large",
transform=plt.gca().transAxes,
)
plt.show()
Total running time of the script: (0 minutes 0.067 seconds)