matplotlib
diff --git a/‎doc/users/whats_new.rst
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diff --git a/‎lib/matplotlib/image.py
Lines changed: 2 additions & 2 deletions b/‎lib/matplotlib/image.py
Lines changed: 2 additions & 2 deletions
diff --git a/‎lib/matplotlib/tests/baseline_images/test_image/image_composite_background.pdf
87.4 KB b/‎lib/matplotlib/tests/baseline_images/test_image/image_composite_background.pdf
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diff --git a/‎lib/matplotlib/tests/baseline_images/test_image/image_composite_background.png
30.4 KB b/‎lib/matplotlib/tests/baseline_images/test_image/image_composite_background.png
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diff --git a/‎lib/matplotlib/tests/baseline_images/test_image/image_composite_background.svg
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diff --git a/‎lib/matplotlib/tests/test_image.py
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diff --git a/‎src/_image.cpp
Lines changed: 1 addition & 1 deletion b/‎src/_image.cpp
Lines changed: 1 addition & 1 deletion
@@ -29,6 +29,12 @@ The individual items of a collection may now have different alpha
 values and be rendered correctly.  This also fixes a bug where
 collections were always filled in the PDF backend.
 
+Multiple images on same axes are correctly transparent
+------------------------------------------------------
+
+When putting multiple images onto the same axes, the background color
+of the axes will now show through correctly.
+
 .. _whats-new-1-2:
 
 new in matplotlib-1.2
 
@@ -315,7 +315,7 @@ def _draw_unsampled_image(self, renderer, gc):
 
         fc = self.axes.patch.get_facecolor()
         bg = mcolors.colorConverter.to_rgba(fc, 0)
-        im.set_bg( *bg)
+        im.set_bg(*bg)
 
         # image input dimensions
         im.reset_matrix()
@@ -1078,7 +1078,7 @@ def get_window_extent(self, renderer=None):
 
     def contains(self, mouseevent):
         """Test whether the mouse event occured within the image."""
-        if callable(self._contains): 
+        if callable(self._contains):
             return self._contains(self, mouseevent)
 
         if not self.get_visible():# or self.get_figure()._renderer is None:
 
@@ -225,6 +225,15 @@ def test_image_edges():
 
     assert g != 100, 'Expected a non-green edge - but sadly, it was.'
 
+@image_comparison(baseline_images=['image_composite_background'], remove_text=True)
+def test_image_composite_background():
+    fig = plt.figure()
+    ax = fig.add_subplot(111)
+    arr = np.arange(12).reshape(4, 3)
+    ax.imshow(arr, extent=[0, 2, 15, 0])
+    ax.imshow(arr, extent=[4, 6, 15, 0])
+    ax.set_axis_bgcolor((1, 0, 0, 0.5))
+    ax.set_xlim([0, 12])
 
 if __name__=='__main__':
     import nose
 
@@ -820,7 +820,7 @@ _image_module::from_images(const Py::Tuple& args)
     pixfmt pixf(*imo->rbufOut);
     renderer_base rb(pixf);
 
-    rb.clear(agg::rgba(1, 1, 1, 1));
+    rb.clear(agg::rgba(0, 0, 0, 0));
     for (size_t imnum = 0; imnum < N; imnum++)
     {
         tup = Py::Tuple(tups[imnum]);
Original file line number	Diff line number	Diff line change
`@@ -820,7 +820,7 @@ _image_module::from_images(const Py::Tuple& args)`
`820`	`820`	`pixfmt pixf(*imo->rbufOut);`
`821`	`821`	`renderer_base rb(pixf);`
`822`	`822`
`823`		`- rb.clear(agg::rgba(1, 1, 1, 1));`
	`823`	`+ rb.clear(agg::rgba(0, 0, 0, 0));`
`824`	`824`	`for (size_t imnum = 0; imnum < N; imnum++)`
`825`	`825`	`{`
`826`	`826`	`tup = Py::Tuple(tups[imnum]);`