Fix shape of Z in contour docs (#20495)

gauenk · web-flow · commit 90a91b169585 · 2021-06-23T17:41:49.000-04:00
I think the Z matrix shape is flipped -- it should maybe be (N,M)?
diff --git a/lib/matplotlib/contour.py b/lib/matplotlib/contour.py
@@ -1583,7 +1583,7 @@ def _initialize_x_y(self, z):
             If not given, they are assumed to be integer indices, i.e.
             ``X = range(M)``, ``Y = range(N)``.
 
-        Z : (M, N) array-like
+        Z : (N, M) array-like
             The height values over which the contour is drawn.
 
         levels : int or array-like, optional
