Merge branch 'transparent_pdf_markers' of git://github.com/mdboom/matplotlib into mdboom-transparent_pdf_markers

Upstream PR was based on slightly earlier commit on v1.2.x.

Author: efiring

lib/matplotlib/backends/backend_pdf.py

@@ -1556,7 +1556,10 @@ def draw_markers(self, gc, marker_path, marker_trans, path, trans, rgbFace=None)
             return
 
         self.check_gc(gc, rgbFace)
-        fillp = gc.fillp()
+        if rgbFace:
+            fillp = gc.fillp()
+        else:
+            fillp = None
         strokep = gc.strokep()
 
         output = self.file.output

lib/matplotlib/tests/baseline_images/test_axes/transparent_markers.pdf

@@ -901,6 +901,15 @@ def test_hist_stacked_weighted():
     ax = fig.add_subplot(111)
     ax.hist( (d1, d2), weights=(w1,w2), histtype="stepfilled", stacked=True)
 
+@image_comparison(baseline_images=['transparent_markers'], remove_text=True)
+def test_transparent_markers():
+    np.random.seed(0)
+    data = np.random.random(50)
+
+    fig = plt.figure()
+    ax = fig.add_subplot(111)
+    ax.plot(data, 'D', mfc='none', markersize=100)
+
 if __name__=='__main__':
     import nose
     nose.runmodule(argv=['-s','--with-doctest'], exit=False)