pythonmatplotlibvisualizationpolar-coordinates

Matplotlib polar chart not showing all xy-ticks

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Issue 1: The x-ticks (pie pieces) aren't ordered from 0 to 24 (my bad, should be 1)

Issue 2: all y-ticks (rings) aren't showing

Issue 3: Someone seems to have eaten a part of the polar chart ...

I expect to see 31 rings, and 24 "pie pieces".

Solution 
  • import matplotlib.pyplot as plt
import numpy as np

fig = plt.figure()

ax = fig.add_subplot(111, projection='polar')

ax.set_xticks(np.arange(1, 25) * np.pi / 12) 
ax.set_xticklabels([str(number) for number in range(1, 25)])

ax.set_yticks(range(1, 32)) 
ax.set_yticklabels([str(number) for number in range(1, 32)])

ax.grid(True)

ax.scatter(np.pi / 12 * 24, 31)  

ax.set_ylim(0, 32)

plt.show()

    Image