缩放区域嵌入轴

插入轴的示例和显示缩放位置的矩形。

  1. import matplotlib.pyplot as plt
  2. import numpy as np
  5. def get_demo_image():
  6.     from matplotlib.cbook import get_sample_data
  7.     import numpy as np
  8.     f = get_sample_data("axes_grid/bivariate_normal.npy", asfileobj=False)
  9.     z = np.load(f)
  10.     # z is a numpy array of 15x15
  11.     return z, (-3, 4, -4, 3)
  13. fig, ax = plt.subplots(figsize=[5, 4])
  15. # make data
  16. Z, extent = get_demo_image()
  17. Z2 = np.zeros([150, 150], dtype="d")
  18. ny, nx = Z.shape
  19. Z2[30:30 + ny, 30:30 + nx] = Z
  21. ax.imshow(Z2, extent=extent, interpolation="nearest",
  22.           origin="lower")
  24. # inset axes....
  25. axins = ax.inset_axes([0.5, 0.5, 0.47, 0.47])
  26. axins.imshow(Z2, extent=extent, interpolation="nearest",
  27.           origin="lower")
  28. # sub region of the original image
  29. x1, x2, y1, y2 = -1.5, -0.9, -2.5, -1.9
  30. axins.set_xlim(x1, x2)
  31. axins.set_ylim(y1, y2)
  32. axins.set_xticklabels('')
  33. axins.set_yticklabels('')
  35. ax.indicate_inset_zoom(axins)
  37. plt.show()

缩放区域嵌入轴示例

参考

此示例中显示了以下函数和方法的用法：

  1. import matplotlib
  2. matplotlib.axes.Axes.inset_axes
  3. matplotlib.axes.Axes.indicate_inset_zoom
  4. matplotlib.axes.Axes.imshow

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