matplotlib · tacaswell · Feb 19, 2015 · Dec 30, 2014 · Feb 6, 2015 · Dec 30, 2014
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -1442,6 +1442,7 @@ def tk_window_focus():
     'matplotlib.tests.test_widgets',
     'mpl_toolkits.tests.test_mplot3d',
     'mpl_toolkits.tests.test_axes_grid1',
+    'mpl_toolkits.tests.test_axes_grid',
     ]
 
 

diff --git a/lib/mpl_toolkits/axes_grid1/axes_grid.py b/lib/mpl_toolkits/axes_grid1/axes_grid.py
@@ -640,6 +640,13 @@ def __init__(self, fig,
             if self._colorbar_mode == "single":
                 for ax in self.axes_all:
                     ax.cax = self.cbar_axes[0]
+            elif self._colorbar_mode == "edge":
+                for index, ax in enumerate(self.axes_all):
+                    col, row = self._get_col_row(index)
+                    if self._colorbar_location in ("left", "right"):
+                        ax.cax = self.cbar_axes[row]
+                    else:
+                        ax.cax = self.cbar_axes[col]
             else:
                 for ax, cax in zip(self.axes_all, self.cbar_axes):
                     ax.cax = cax

diff --git a/lib/mpl_toolkits/tests/baseline_images/test_axes_grid/imagegrid_cbar_mode.png b/lib/mpl_toolkits/tests/baseline_images/test_axes_grid/imagegrid_cbar_mode.png
diff --git a/lib/mpl_toolkits/tests/test_axes_grid.py b/lib/mpl_toolkits/tests/test_axes_grid.py
@@ -0,0 +1,42 @@
+
+from matplotlib.testing.decorators import image_comparison
+from mpl_toolkits.axes_grid1 import ImageGrid
+import numpy as np
+import matplotlib.pyplot as plt
+
+
+@image_comparison(baseline_images=['imagegrid_cbar_mode'],
+                  extensions=['png'],
+                  remove_text=True)
+def test_imagegrid_cbar_mode_edge():
+    X, Y = np.meshgrid(np.linspace(0, 6, 30), np.linspace(0, 6, 30))
+    arr = np.sin(X) * np.cos(Y) + 1j*(np.sin(3*Y) * np.cos(Y/2.))
+
+    fig = plt.figure(figsize=(18, 9))
+
+    positions = (241, 242, 243, 244, 245, 246, 247, 248)
+    directions = ['row']*4 + ['column']*4
+    cbar_locations = ['left', 'right', 'top', 'bottom']*2
+
+    for position, direction, location in zip(positions,
+                                             directions,
+                                             cbar_locations):
+        grid = ImageGrid(fig, position,
+                         nrows_ncols=(2, 2),
+                         direction=direction,
+                         cbar_location=location,
+                         cbar_size='20%',
+                         cbar_mode='edge')
+        ax1, ax2, ax3, ax4, = grid
+
+        im1 = ax1.imshow(arr.real, cmap='spectral')
+        im2 = ax2.imshow(arr.imag, cmap='hot')
+        im3 = ax3.imshow(np.abs(arr), cmap='jet')
+        im4 = ax4.imshow(np.arctan2(arr.imag, arr.real), cmap='hsv')
+
+        # Some of these colorbars will be overridden by later ones,
+        # depending on the direction and cbar_location
+        ax1.cax.colorbar(im1)
+        ax2.cax.colorbar(im2)
+        ax3.cax.colorbar(im3)
+        ax4.cax.colorbar(im4)