PathPatch对象

此示例显示如何通过Matplotlib的API创建 Path 和 PathPatch 对象。

  1. import matplotlib.path as mpath
  2. import matplotlib.patches as mpatches
  3. import matplotlib.pyplot as plt
  6. fig, ax = plt.subplots()
  8. Path = mpath.Path
  9. path_data = [
  10.     (Path.MOVETO, (1.58, -2.57)),
  11.     (Path.CURVE4, (0.35, -1.1)),
  12.     (Path.CURVE4, (-1.75, 2.0)),
  13.     (Path.CURVE4, (0.375, 2.0)),
  14.     (Path.LINETO, (0.85, 1.15)),
  15.     (Path.CURVE4, (2.2, 3.2)),
  16.     (Path.CURVE4, (3, 0.05)),
  17.     (Path.CURVE4, (2.0, -0.5)),
  18.     (Path.CLOSEPOLY, (1.58, -2.57)),
  19.     ]
  20. codes, verts = zip(*path_data)
  21. path = mpath.Path(verts, codes)
  22. patch = mpatches.PathPatch(path, facecolor='r', alpha=0.5)
  23. ax.add_patch(patch)
  25. # plot control points and connecting lines
  26. x, y = zip(*path.vertices)
  27. line, = ax.plot(x, y, 'go-')
  29. ax.grid()
  30. ax.axis('equal')
  31. plt.show()

PathPatch对象

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.path
  3. matplotlib.path.Path
  4. matplotlib.patches
  5. matplotlib.patches.PathPatch
  6. matplotlib.axes.Axes.add_patch

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