等高线角遮盖

此示例中显示了以下函数，方法和类的使用：

  1. import matplotlib.pyplot as plt
  2. import numpy as np
  4. # Data to plot.
  5. x, y = np.meshgrid(np.arange(7), np.arange(10))
  6. z = np.sin(0.5 * x) * np.cos(0.52 * y)
  8. # Mask various z values.
  9. mask = np.zeros_like(z, dtype=bool)
  10. mask[2, 3:5] = True
  11. mask[3:5, 4] = True
  12. mask[7, 2] = True
  13. mask[5, 0] = True
  14. mask[0, 6] = True
  15. z = np.ma.array(z, mask=mask)
  17. corner_masks = [False, True]
  18. fig, axs = plt.subplots(ncols=2)
  19. for ax, corner_mask in zip(axs, corner_masks):
  20.     cs = ax.contourf(x, y, z, corner_mask=corner_mask)
  21.     ax.contour(cs, colors='k')
  22.     ax.set_title('corner_mask = {0}'.format(corner_mask))
  24.     # Plot grid.
  25.     ax.grid(c='k', ls='-', alpha=0.3)
  27.     # Indicate masked points with red circles.
  28.     ax.plot(np.ma.array(x, mask=~mask), y, 'ro')
  30. plt.show()

条形码示例

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.contour
  3. matplotlib.pyplot.contour
  4. matplotlib.axes.Axes.contourf
  5. matplotlib.pyplot.contourf

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