betweenx填充示例

使用fill_betweenx在两条水平曲线之间着色。

betweenx填充示例

betweenx填充示例2

  1. import matplotlib.pyplot as plt
  2. import numpy as np
  4. y = np.arange(0.0, 2, 0.01)
  5. x1 = np.sin(2 * np.pi * y)
  6. x2 = 1.2 * np.sin(4 * np.pi * y)
  8. fig, [ax1, ax2, ax3] = plt.subplots(3, 1, sharex=True)
  10. ax1.fill_betweenx(y, 0, x1)
  11. ax1.set_ylabel('(x1, 0)')
  13. ax2.fill_betweenx(y, x1, 1)
  14. ax2.set_ylabel('(x1, 1)')
  16. ax3.fill_betweenx(y, x1, x2)
  17. ax3.set_ylabel('(x1, x2)')
  18. ax3.set_xlabel('x')
  20. # now fill between x1 and x2 where a logical condition is met.  Note
  21. # this is different than calling
  22. #   fill_between(y[where], x1[where], x2[where])
  23. # because of edge effects over multiple contiguous regions.
  25. fig, [ax, ax1] = plt.subplots(2, 1, sharex=True)
  26. ax.plot(x1, y, x2, y, color='black')
  27. ax.fill_betweenx(y, x1, x2, where=x2 >= x1, facecolor='green')
  28. ax.fill_betweenx(y, x1, x2, where=x2 <= x1, facecolor='red')
  29. ax.set_title('fill between where')
  31. # Test support for masked arrays.
  32. x2 = np.ma.masked_greater(x2, 1.0)
  33. ax1.plot(x1, y, x2, y, color='black')
  34. ax1.fill_betweenx(y, x1, x2, where=x2 >= x1, facecolor='green')
  35. ax1.fill_betweenx(y, x1, x2, where=x2 <= x1, facecolor='red')
  36. ax1.set_title('Now regions with x2 > 1 are masked')
  38. # This example illustrates a problem; because of the data
  39. # gridding, there are undesired unfilled triangles at the crossover
  40. # points.  A brute-force solution would be to interpolate all
  41. # arrays to a very fine grid before plotting.
  43. plt.show()

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