Merge pull request matplotlib#1889 from tacaswell/log_bar_regression

Fixed handling of `bar(.., bottom=None, log=True)`

Author: mdboom

lib/matplotlib/axes.py

@@ -4799,8 +4799,8 @@ def make_iterable(x):
             if _bottom is None:
                 if self.get_yscale() == 'log':
                     adjust_ylim = True
-                else:
-                    bottom = [0]
+                bottom = [0]
+
             nbars = len(left)
             if len(width) == 1:
                 width *= nbars
@@ -4814,8 +4814,8 @@ def make_iterable(x):
             if _left is None:
                 if self.get_xscale() == 'log':
                     adjust_xlim = True
-                else:
-                    left = [0]
+                left = [0]
+
             nbars = len(bottom)
             if len(left) == 1:
                 left *= nbars