Update what's new

mdboom · mdboom · commit f9d85349af41 · 2016-02-17T09:47:55.000-05:00
diff --git a/doc/api/api_changes/2015-12-30_draw_image.rst b/doc/api/api_changes/2015-12-30_draw_image.rst
@@ -0,0 +1,8 @@
+Change in the ``draw_image`` backend API
+----------------------------------------
+
+The ``draw_image`` method implemented by backends has changed its interface.
+
+This change is only relevant if the backend declares that it is able
+to transform images by returning ``True`` from ``option_scale_image``.
+See the ``draw_image`` docstring for more information.
diff --git a/doc/users/whats_new/2015-12-30_image-interpolation.rst b/doc/users/whats_new/2015-12-30_image-interpolation.rst
@@ -0,0 +1,18 @@
+Improved image support
+----------------------
+
+Prior to version 2.0, matplotlib resampled images by first applying
+the color map and then resizing the result.  Since the resampling was
+performed on the colored image, this introduced colors in the output
+image that didn't actually exist in the color map.  Now, images are
+resampled first (and entirely in floating-point, if the input image is
+floating-point), and then the color map is applied.
+
+In order to make this important change, the image handling code was
+almost entirely rewritten.  As a side effect, image resampling uses
+less memory and fewer datatype conversions than before.
+
+The experimental private feature where one could "skew" an image by
+setting the private member ``_image_skew_coordinate`` has been
+removed.  Instead, images will obey the transform of the axes on which
+they are drawn.
diff --git a/doc/users/whats_new/rcparams.rst b/doc/users/whats_new/rcparams.rst
@@ -19,10 +19,20 @@ Configuration (rcParams)
 |`svg.hashsalt`              | see note                                         |
 +----------------------------+--------------------------------------------------+
 
-``svg.hashsalt``
-````````````````
+Added ``svg.hashsalt`` key to rcParams
+```````````````````````````````````````
 
 If ``svg.hashsalt`` is ``None`` (which it is by default), the svg
 backend uses ``uuid4`` to generate the hash salt.  If it is not
 ``None``, it must be a string that is used as the hash salt instead of
 ``uuid4``.  This allows for deterministic SVG output.
+
+
+Removed the ``svg.image_noscale`` rcParam
+`````````````````````````````````````````
+
+As a result of the extensive changes to image handling, the
+``svg.image_noscale`` rcParam has been removed.  The same
+functionality may be achieved by setting ``interpolation='none'`` on
+individual images or globally using the ``image.interpolation``
+rcParam.
