Merge pull request matplotlib#2968 from mpyrozhok/issue-2964

BUG: Fix the triangular marker rendering error.  Closes matplotlib#2964

Author: tacaswell

CHANGELOG

@@ -1,3 +1,6 @@
+2014-04-10 Fixed the triangular marker rendering error. The "Up" triangle was
+           rendered instead of "Right" triangle and vice-versa.
+
 2014-04-08 Fixed a bug in parasite_axes.py by making a list out
            of a generator at line 263.
 

lib/matplotlib/markers.py

@@ -725,7 +725,7 @@ def _set_tri_down(self):
         self._path = self._tri_path
 
     def _set_tri_up(self):
-        self._transform = Affine2D().scale(0.5).rotate_deg(90)
+        self._transform = Affine2D().scale(0.5).rotate_deg(180)
         self._snap_threshold = 5.0
         self._filled = False
         self._path = self._tri_path
@@ -737,7 +737,7 @@ def _set_tri_left(self):
         self._path = self._tri_path
 
     def _set_tri_right(self):
-        self._transform = Affine2D().scale(0.5).rotate_deg(180)
+        self._transform = Affine2D().scale(0.5).rotate_deg(90)
         self._snap_threshold = 5.0
         self._filled = False
         self._path = self._tri_path