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DOC: add visual example of edge modes

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Gregory R. Lee
2015-07-07 17:45:47 -04:00
parent 2f02ad385f
commit 080c276791
1 changed files with 6 additions and 6 deletions
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doc/examples/plot_edge_modes.py
+6 -6
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@@ -12,21 +12,21 @@ import skimage.data
import matplotlib.pyplot as plt
import numpy as np
img = np.zeros((9, 9))
img = np.zeros((16, 16))
img[:8, :8] += 1
img[:4, :4] += 1
img[:2, :2] += 1
img[:1, :1] += 2
modes = ['constant', 'nearest', 'wrap', 'reflect']
fig, axes = plt.subplots(1, 4, figsize=(15, 5))
fig, axes = plt.subplots(1, 4, figsize=(12, 3))
for n, mode in enumerate(modes):
img_extended = extend_image(img, pad=img.shape[0], mode=mode)
axes[n].imshow(img_extended, cmap=plt.cm.gray, interpolation='nearest')
axes[n].plot([8.5, 8.5], [8.5, 17.5], 'y--', linewidth=0.5)
axes[n].plot([17.5, 17.5], [8.5, 17.5], 'y--', linewidth=0.5)
axes[n].plot([8.5, 17.5], [8.5, 8.5], 'y--', linewidth=0.5)
axes[n].plot([8.5, 17.5], [17.5, 17.5], 'y--', linewidth=0.5)
axes[n].plot([15.5, 15.5], [15.5, 31.5], 'y--', linewidth=0.5)
axes[n].plot([31.5, 31.5], [15.5, 31.5], 'y--', linewidth=0.5)
axes[n].plot([15.5, 31.5], [15.5, 15.5], 'y--', linewidth=0.5)
axes[n].plot([15.5, 31.5], [31.5, 31.5], 'y--', linewidth=0.5)
axes[n].set_axis_off()
axes[n].set_aspect('equal')
axes[n].set_title(mode)