DOC: Add information on new views for custom Axes.

QuLogic · QuLogic · commit b9ceb0b61672 · 2015-08-29T19:04:33.000-04:00
diff --git a/doc/api/api_changes/2015-08-29-custom-axes-view.rst b/doc/api/api_changes/2015-08-29-custom-axes-view.rst
@@ -0,0 +1,12 @@
+New API for custom Axes view changes
+````````````````````````````````````
+
+Interactive pan and zoom were previously implemented using a Cartesian-specific
+algorithm that was not necessarily applicable to custom Axes. Three new private
+methods, :meth:`~matplotlib.axes._base._AxesBase._get_view`,
+:meth:`~matplotlib.axes._base._AxesBase._set_view`, and
+:meth:`~matplotlib.axes._base._AxesBase._set_view_from_bbox`, allow for custom
+``Axes`` classes to override the pan and zoom algorithms. Implementors of
+custom ``Axes`` who override these methods may provide suitable behaviour for
+both pan and zoom as well as the view navigation buttons on the interactive
+toolbars. 
