圆，楔和多边形

此示例演示如何使用修补程序集合。

  1. import numpy as np
  2. from matplotlib.patches import Circle, Wedge, Polygon
  3. from matplotlib.collections import PatchCollection
  4. import matplotlib.pyplot as plt
  6. # Fixing random state for reproducibility
  7. np.random.seed(19680801)
  10. fig, ax = plt.subplots()
  12. resolution = 50  # the number of vertices
  13. N = 3
  14. x = np.random.rand(N)
  15. y = np.random.rand(N)
  16. radii = 0.1*np.random.rand(N)
  17. patches = []
  18. for x1, y1, r in zip(x, y, radii):
  19.     circle = Circle((x1, y1), r)
  20.     patches.append(circle)
  22. x = np.random.rand(N)
  23. y = np.random.rand(N)
  24. radii = 0.1*np.random.rand(N)
  25. theta1 = 360.0*np.random.rand(N)
  26. theta2 = 360.0*np.random.rand(N)
  27. for x1, y1, r, t1, t2 in zip(x, y, radii, theta1, theta2):
  28.     wedge = Wedge((x1, y1), r, t1, t2)
  29.     patches.append(wedge)
  31. # Some limiting conditions on Wedge
  32. patches += [
  33.     Wedge((.3, .7), .1, 0, 360),             # Full circle
  34.     Wedge((.7, .8), .2, 0, 360, width=0.05),  # Full ring
  35.     Wedge((.8, .3), .2, 0, 45),              # Full sector
  36.     Wedge((.8, .3), .2, 45, 90, width=0.10),  # Ring sector
  37. ]
  39. for i in range(N):
  40.     polygon = Polygon(np.random.rand(N, 2), True)
  41.     patches.append(polygon)
  43. colors = 100*np.random.rand(len(patches))
  44. p = PatchCollection(patches, alpha=0.4)
  45. p.set_array(np.array(colors))
  46. ax.add_collection(p)
  47. fig.colorbar(p, ax=ax)
  49. plt.show()

圆，楔和多边形示例

参考

此示例中显示了以下函数，方法，类和模块的使用：

  1. import matplotlib
  2. matplotlib.patches
  3. matplotlib.patches.Circle
  4. matplotlib.patches.Wedge
  5. matplotlib.patches.Polygon
  6. matplotlib.collections.PatchCollection
  7. matplotlib.collections.Collection.set_array
  8. matplotlib.axes.Axes.add_collection
  9. matplotlib.figure.Figure.colorbar

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