inverting an axis shouldn't affect the autoscaling setting

Author: WeatherGod

lib/matplotlib/axes.py

@@ -2421,7 +2421,7 @@ def set_axis_bgcolor(self, color):
     def invert_xaxis(self):
         "Invert the x-axis."
         left, right = self.get_xlim()
-        self.set_xlim(right, left)
+        self.set_xlim(right, left, auto=None)
 
     def xaxis_inverted(self):
         """Returns *True* if the x-axis is inverted."""
@@ -2641,7 +2641,7 @@ def set_xticklabels(self, labels, fontdict=None, minor=False, **kwargs):
     def invert_yaxis(self):
         "Invert the y-axis."
         bottom, top = self.get_ylim()
-        self.set_ylim(top, bottom)
+        self.set_ylim(top, bottom, auto=None)
 
     def yaxis_inverted(self):
         """Returns *True* if the y-axis is inverted."""

lib/mpl_toolkits/mplot3d/axes3d.py

@@ -1389,7 +1389,7 @@ def invert_zaxis(self):
             This function was added, but not tested. Please report any bugs.
         """
         bottom, top = self.get_zlim()
-        self.set_zlim(top, bottom)
+        self.set_zlim(top, bottom, auto=None)
 
     def zaxis_inverted(self):
         '''