Merge pull request #4840 from anntzer/edit-noaxes

tacaswell · tacaswell · commit 0bdc8f691aee · 2015-07-31T14:38:08.000-04:00
ENH: Improve error when trying to edit empty figure.
diff --git a/lib/matplotlib/backends/backend_qt5.py b/lib/matplotlib/backends/backend_qt5.py
@@ -610,6 +610,10 @@ def _init_toolbar(self):
     if figureoptions is not None:
         def edit_parameters(self):
             allaxes = self.canvas.figure.get_axes()
+            if not allaxes:
+                QtWidgets.QMessageBox.warning(
+                    self.parent, "Error", "There are no axes to edit.")
+                return
             if len(allaxes) == 1:
                 axes = allaxes[0]
             else:
