演示Edge Colorbar

演示Edge Colorbar

  1. import matplotlib.pyplot as plt
  2. from mpl_toolkits.axes_grid1 import AxesGrid
  5. def get_demo_image():
  6.     import numpy as np
  7.     from matplotlib.cbook import get_sample_data
  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)
  14. def demo_bottom_cbar(fig):
  15.     """
  16.     A grid of 2x2 images with a colorbar for each column.
  17.     """
  18.     grid = AxesGrid(fig, 121,  # similar to subplot(132)
  19.                     nrows_ncols=(2, 2),
  20.                     axes_pad=0.10,
  21.                     share_all=True,
  22.                     label_mode="1",
  23.                     cbar_location="bottom",
  24.                     cbar_mode="edge",
  25.                     cbar_pad=0.25,
  26.                     cbar_size="15%",
  27.                     direction="column"
  28.                     )
  30.     Z, extent = get_demo_image()
  31.     cmaps = [plt.get_cmap("autumn"), plt.get_cmap("summer")]
  32.     for i in range(4):
  33.         im = grid[i].imshow(Z, extent=extent, interpolation="nearest",
  34.                             cmap=cmaps[i//2])
  35.         if i % 2:
  36.             cbar = grid.cbar_axes[i//2].colorbar(im)
  38.     for cax in grid.cbar_axes:
  39.         cax.toggle_label(True)
  40.         cax.axis[cax.orientation].set_label("Bar")
  42.     # This affects all axes as share_all = True.
  43.     grid.axes_llc.set_xticks([-2, 0, 2])
  44.     grid.axes_llc.set_yticks([-2, 0, 2])
  47. def demo_right_cbar(fig):
  48.     """
  49.     A grid of 2x2 images. Each row has its own colorbar.
  50.     """
  52.     grid = AxesGrid(F, 122,  # similar to subplot(122)
  53.                     nrows_ncols=(2, 2),
  54.                     axes_pad=0.10,
  55.                     label_mode="1",
  56.                     share_all=True,
  57.                     cbar_location="right",
  58.                     cbar_mode="edge",
  59.                     cbar_size="7%",
  60.                     cbar_pad="2%",
  61.                     )
  62.     Z, extent = get_demo_image()
  63.     cmaps = [plt.get_cmap("spring"), plt.get_cmap("winter")]
  64.     for i in range(4):
  65.         im = grid[i].imshow(Z, extent=extent, interpolation="nearest",
  66.                             cmap=cmaps[i//2])
  67.         if i % 2:
  68.             grid.cbar_axes[i//2].colorbar(im)
  70.     for cax in grid.cbar_axes:
  71.         cax.toggle_label(True)
  72.         cax.axis[cax.orientation].set_label('Foo')
  74.     # This affects all axes because we set share_all = True.
  75.     grid.axes_llc.set_xticks([-2, 0, 2])
  76.     grid.axes_llc.set_yticks([-2, 0, 2])
  79. if 1:
  80.     F = plt.figure(1, (5.5, 2.5))
  82.     F.subplots_adjust(left=0.05, right=0.93)
  84.     demo_bottom_cbar(F)
  85.     demo_right_cbar(F)
  87.     plt.show()

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