Merge pull request #12546 from anntzer/quadratic-stickies

jklymak · web-flow · commit a8dca07bed98 · 2018-10-17T10:42:46.000-07:00
Avoid quadratic behavior when accumulating stickies.
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -2405,12 +2405,12 @@ def autoscale_view(self, tight=None, scalex=True, scaley=True):
 
         if self.use_sticky_edges and (self._xmargin or self._ymargin):
             stickies = [artist.sticky_edges for artist in self.get_children()]
-            x_stickies = sum([sticky.x for sticky in stickies], [])
-            y_stickies = sum([sticky.y for sticky in stickies], [])
+            x_stickies = np.array([x for sticky in stickies for x in sticky.x])
+            y_stickies = np.array([y for sticky in stickies for y in sticky.y])
             if self.get_xscale().lower() == 'log':
-                x_stickies = [xs for xs in x_stickies if xs > 0]
+                x_stickies = x_stickies[x_stickies > 0]
             if self.get_yscale().lower() == 'log':
-                y_stickies = [ys for ys in y_stickies if ys > 0]
+                y_stickies = y_stickies[y_stickies > 0]
         else:  # Small optimization.
             x_stickies, y_stickies = [], []
 
