Change stack level of Figure.gca warning.

QuLogic · QuLogic · commit 02d7cf81fb36 · 2017-02-02T18:20:33.000-05:00
Raising the warning on the current level breaks tests on Python 2.7
which doesn't reset the warning filter correctly.
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -1555,7 +1555,7 @@ def gca(self, **kwargs):
                 else:
                     warnings.warn('Requested projection is different from '
                                   'current axis projection, creating new axis '
-                                  'with requested projection.')
+                                  'with requested projection.', stacklevel=2)
 
         # no axes found, so create one which spans the figure
         return self.add_subplot(1, 1, 1, **kwargs)
