FIX

jklymak · jklymak · commit 7867fc35f8d1 · 2021-05-29T13:37:24.000-07:00
diff --git a/lib/matplotlib/colorbar.py b/lib/matplotlib/colorbar.py
@@ -1024,15 +1024,19 @@ def _reset_locator_formatter_scale(self):
                 self.__scale = 'linear'
                 self.ax.set_xscale('linear')
                 self.ax.set_yscale('linear')
-        elif hasattr(self.norm, '_scale') and (self.norm._scale is not None):
+        elif hasattr(self.norm, '_scale') and self.norm._scale is not None:
+            # use the norm's scale:
             self.ax.set_xscale(self.norm._scale)
             self.ax.set_yscale(self.norm._scale)
             self.__scale = self.norm._scale.name
         elif type(self.norm) is colors.Normalize:
-            self.__scale = 'linear'
+            # plain Normalize:
             self.ax.set_xscale('linear')
             self.ax.set_yscale('linear')
+            self.__scale = 'linear'
         else:
+            # norm._scale is None or not an attr: derive the scale from
+            # the Norm:
             funcs = (self._forward_from_norm, self._inverse_from_norm)
             self.ax.set_xscale('function', functions=funcs)
             self.ax.set_yscale('function', functions=funcs)
