Merge pull request matplotlib#15472 from meeseeksmachine/auto-backport-of-pr-15460-on-v2.2.x

tacaswell · web-flow · commit d84ed4948cbf · 2019-10-22T08:41:35.000-04:00
Backport PR matplotlib#15460 on branch v2.2.x (Fix incorrect value check in axes_grid.)
diff --git a/lib/mpl_toolkits/axes_grid1/axes_grid.py b/lib/mpl_toolkits/axes_grid1/axes_grid.py
@@ -484,7 +484,7 @@ def __init__(self, fig,
         if ngrids is None:
             ngrids = self._nrows * self._ncols
         else:
-            if not 0 <= ngrids < self._nrows * self._ncols:
+            if not 0 < ngrids <= self._nrows * self._ncols:
                 raise Exception
 
         self.ngrids = ngrids
diff --git a/lib/mpl_toolkits/tests/test_axes_grid1.py b/lib/mpl_toolkits/tests/test_axes_grid1.py
@@ -101,6 +101,7 @@ def test_axesgrid_colorbar_log_smoketest():
     fig = plt.figure()
     grid = AxesGrid(fig, 111,  # modified to be only subplot
                     nrows_ncols=(1, 1),
+                    ngrids=1,
                     label_mode="L",
                     cbar_location="top",
                     cbar_mode="single",
