Switch from > to !=, since maybe valid for minsh to be negative here.

rmjarvis · rmjarvis · commit 3e5aa3a990b2 · 2016-11-28T03:57:33.000-05:00
diff --git a/lib/matplotlib/quiver.py b/lib/matplotlib/quiver.py
@@ -702,7 +702,7 @@ def _h_arrows(self, length):
         X0 = x0.take(ii)
         Y0 = y0.take(ii)
         Y0[3:-1] *= -1
-        shrink = length / minsh if minsh > 0. else 0.
+        shrink = length / minsh if minsh != 0. else 0.
         X0 = shrink * X0[np.newaxis, :]
         Y0 = shrink * Y0[np.newaxis, :]
         short = np.repeat(length < minsh, 8, axis=1)
