颜色映射规格化功能

演示使用规范以非线性方式将颜色映射映射到数据上。

颜色映射规格化功能示例

  1. import numpy as np
  2. import matplotlib.pyplot as plt
  3. import matplotlib.colors as colors
  5. N = 100
  6. X, Y = np.mgrid[-3:3:complex(0, N), -2:2:complex(0, N)]
  8. '''
  9. PowerNorm: Here a power-law trend in X partially obscures a rectified
  10. sine wave in Y. We can remove the power law using a PowerNorm.
  11. '''
  12. X, Y = np.mgrid[0:3:complex(0, N), 0:2:complex(0, N)]
  13. Z1 = (1 + np.sin(Y * 10.)) * X**(2.)
  15. fig, ax = plt.subplots(2, 1)
  17. pcm = ax[0].pcolormesh(X, Y, Z1, norm=colors.PowerNorm(gamma=1./2.),
  18.                        cmap='PuBu_r')
  19. fig.colorbar(pcm, ax=ax[0], extend='max')
  21. pcm = ax[1].pcolormesh(X, Y, Z1, cmap='PuBu_r')
  22. fig.colorbar(pcm, ax=ax[1], extend='max')
  24. plt.show()

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