From 44ff97e30c03afe6a340b3d256bd04efff5808d0 Mon Sep 17 00:00:00 2001
From: Phil Elson <pelson.pub@gmail.com>
Date: Wed, 28 Jan 2015 09:22:36 +0000
Subject: [PATCH] Fixed large pcolormesh rendering with bbox_inches='tight'.

---
 lib/matplotlib/collections.py | 3 +++
 lib/matplotlib/transforms.py  | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/lib/matplotlib/collections.py b/lib/matplotlib/collections.py
index 3e781d3602e8..e84bd3e578d3 100644
--- a/lib/matplotlib/collections.py
+++ b/lib/matplotlib/collections.py
@@ -1705,6 +1705,9 @@ def set_paths(self):
         self._paths = self.convert_mesh_to_paths(
             self._meshWidth, self._meshHeight, self._coordinates)
 
+    def get_datalim(self, transData):
+        return (self.get_transform() - transData).transform_bbox(self._bbox)
+
     @staticmethod
     def convert_mesh_to_paths(meshWidth, meshHeight, coordinates):
         """
diff --git a/lib/matplotlib/transforms.py b/lib/matplotlib/transforms.py
index 4fc5baead860..5956795fa6f9 100644
--- a/lib/matplotlib/transforms.py
+++ b/lib/matplotlib/transforms.py
@@ -1344,6 +1344,15 @@ def transform_non_affine(self, values):
         """
         return values
 
+    def transform_bbox(self, bbox):
+        """
+        Transform the given bounding box.
+
+        Note, for smarter transforms including caching (a common
+        requirement for matplotlib figures), see :class:`TransformedBbox`.
+        """
+        return Bbox(self._transform.transform(bbox.get_points()))
+
     def get_affine(self):
         """
         Get the affine part of this transform.