0.99版本轴网格新特性

创建RGB合成图像。

  1. import numpy as np
  2. import matplotlib.pyplot as plt
  3. from mpl_toolkits.axes_grid1.axes_rgb import RGBAxes
  6. def get_demo_image():
  7.     # prepare image
  8.     delta = 0.5
  10.     extent = (-3, 4, -4, 3)
  11.     x = np.arange(-3.0, 4.001, delta)
  12.     y = np.arange(-4.0, 3.001, delta)
  13.     X, Y = np.meshgrid(x, y)
  14.     Z1 = np.exp(-X**2 - Y**2)
  15.     Z2 = np.exp(-(X - 1)**2 - (Y - 1)**2)
  16.     Z = (Z1 - Z2) * 2
  18.     return Z, extent
  21. def get_rgb():
  22.     Z, extent = get_demo_image()
  24.     Z[Z < 0] = 0.
  25.     Z = Z / Z.max()
  27.     R = Z[:13, :13]
  28.     G = Z[2:, 2:]
  29.     B = Z[:13, 2:]
  31.     return R, G, B
  34. fig = plt.figure(1)
  35. ax = RGBAxes(fig, [0.1, 0.1, 0.8, 0.8])
  37. r, g, b = get_rgb()
  38. kwargs = dict(origin="lower", interpolation="nearest")
  39. ax.imshow_rgb(r, g, b, **kwargs)
  41. ax.RGB.set_xlim(0., 9.5)
  42. ax.RGB.set_ylim(0.9, 10.6)
  44. plt.show()

创建RGB合成图像示例

参考

此示例中显示了以下函数，方法，类和模块的使用：

  1. import mpl_toolkits
  2. mpl_toolkits.axes_grid1.axes_rgb.RGBAxes
  3. mpl_toolkits.axes_grid1.axes_rgb.RGBAxes.imshow_rgb

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