Use minlength kwarg

dstansby · dstansby · commit 8ce11f283467 · 2016-11-21T11:15:14.000Z
diff --git a/lib/matplotlib/tri/triinterpolate.py b/lib/matplotlib/tri/triinterpolate.py
@@ -1265,12 +1265,9 @@ def dot(self, V):
         *V* dense vector of shape (self.m,)
         """
         assert V.shape == (self.m,)
-        # For a more generic implementation we could use below kw argument
-        # minlength=self.m of bincount ; however:
-        # - it is new in numpy 1.6
-        # - it is unecessary when each row have at least 1 entry in global
-        #   matrix, which is the case here.
-        return np.bincount(self.rows, weights=self.vals*V[self.cols])
+        return np.bincount(self.rows,
+                           weights=self.vals*V[self.cols],
+                           minlength=self.m)
 
     def compress_csc(self):
         """
