Rasterize colorbar when it has many colors; closes #4480

efiring · efiring · commit dbd157d99605 · 2015-05-27T10:44:29.000-10:00
diff --git a/lib/matplotlib/colorbar.py b/lib/matplotlib/colorbar.py
@@ -517,6 +517,8 @@ def _add_solids(self, X, Y, C):
                                     colors=(mpl.rcParams['axes.edgecolor'],),
                                     linewidths=linewidths)
             self.ax.add_collection(self.dividers)
+        elif len(self._y) > 50:
+            self.solids.set_rasterized(True)
 
     def add_lines(self, levels, colors, linewidths, erase=True):
         '''
