Check limits only of points in the triangulation

ianthomas23 · ianthomas23 · commit 88ee7bfeaa60 · 2019-04-25T15:41:04.000+01:00
diff --git a/lib/matplotlib/tri/tricontour.py b/lib/matplotlib/tri/tricontour.py
@@ -93,8 +93,8 @@ def _contour_args(self, args, kwargs):
             raise ValueError('z array cannot contain non-finite values')
 
         z = np.ma.masked_invalid(z, copy=False)
-        self.zmax = float(z.max())
-        self.zmin = float(z.min())
+        self.zmax = float(z_check.max())
+        self.zmin = float(z_check.min())
         if self.logscale and self.zmin <= 0:
             raise ValueError('Cannot %s log of negative values.' % fn)
         self._contour_level_args(z, args[1:])
