Shorten and comment show_collection example.

doc/source/plots/show_collection.py

@@ -2,26 +2,25 @@ import os
 
 import matplotlib.pyplot as plt
 from mpl_toolkits.axes_grid import AxesGrid
-import numpy as np
 
 from scikits.image.io import MultiImage
 from scikits.image import data_dir
 
-
+# Load the multi-layer image
 fname = os.path.join(data_dir, 'multipage.tif')
 img = MultiImage(fname)
 
+# Create an image grid
 fig = plt.figure()
-grid = AxesGrid(fig, 111,
-                nrows_ncols = (1, 2),
-                axes_pad = 0.1,
-                add_all=True,
-                label_mode = "L",
-                aspect=True)
+grid = AxesGrid(fig,
+                rect=(1, 1, 1),
+                nrows_ncols=(1, 2),
+                axes_pad=0.1)
 
+# Plot the layers on the image grid
 for i, frame in enumerate(img):
     grid[i].imshow(frame, cmap=plt.cm.gray)
-    grid[i].set_xlabel('Frame %s'%i)
+    grid[i].set_xlabel('Frame %s' % i)
     grid[i].set_xticks([])
     grid[i].set_yticks([])