BUG: fix CubicTriInterpolator when masked triangulation is used

godsic · QuLogic · commit 65c9f6cfdab4 · 2020-05-07T23:24:23.000-04:00
diff --git a/lib/matplotlib/tri/triinterpolate.py b/lib/matplotlib/tri/triinterpolate.py
@@ -401,8 +401,8 @@ def __init__(self, triangulation, z, kind='min_E', trifinder=None,
         self._tri_renum = tri_renum
         # Taking into account the node renumbering in self._z:
         node_mask = (node_renum == -1)
-        self._z[node_renum[~node_mask]] = self._z
         self._z = self._z[~node_mask]
+        self._z[node_renum[~node_mask]] = self._z
 
         # Computing scale factors
         self._unit_x = np.ptp(compressed_x)
