From 81839037518a6d709b160498bc9559ea82f67596 Mon Sep 17 00:00:00 2001
From: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>
Date: Wed, 22 Sep 2021 13:33:30 +0200
Subject: [PATCH] Backport PR #21146: Fix clim handling for pcolor{,mesh}.
---
lib/matplotlib/axes/_axes.py | 18 +++++-------------
lib/matplotlib/tests/test_axes.py | 8 ++++++++
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
index cef0f8c3c88d..f9b63e4d85c7 100644
--- a/lib/matplotlib/axes/_axes.py
+++ b/lib/matplotlib/axes/_axes.py
@@ -5845,12 +5845,8 @@ def pcolor(self, *args, shading=None, alpha=None, norm=None, cmap=None,
kwargs.setdefault('snap', False)
- collection = mcoll.PolyCollection(verts, **kwargs)
-
- collection.set_alpha(alpha)
- collection.set_array(C)
- collection.set_cmap(cmap)
- collection.set_norm(norm)
+ collection = mcoll.PolyCollection(
+ verts, array=C, cmap=cmap, norm=norm, alpha=alpha, **kwargs)
collection._scale_norm(norm, vmin, vmax)
self._pcolor_grid_deprecation_helper()
@@ -6079,14 +6075,10 @@ def pcolormesh(self, *args, alpha=None, norm=None, cmap=None, vmin=None,
# convert to one dimensional array
C = C.ravel()
- collection = mcoll.QuadMesh(
- coords, antialiased=antialiased, shading=shading, **kwargs)
snap = kwargs.get('snap', rcParams['pcolormesh.snap'])
- collection.set_snap(snap)
- collection.set_alpha(alpha)
- collection.set_array(C)
- collection.set_cmap(cmap)
- collection.set_norm(norm)
+ collection = mcoll.QuadMesh(
+ coords, antialiased=antialiased, shading=shading, snap=snap,
+ array=C, cmap=cmap, norm=norm, alpha=alpha, **kwargs)
collection._scale_norm(norm, vmin, vmax)
self._pcolor_grid_deprecation_helper()
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index 6067d54cf517..59ebc2c2f53d 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -7225,3 +7225,11 @@ def test_empty_line_plots():
_, ax = plt.subplots()
line = ax.plot([], [])
assert len(line) == 1
+
+
+def test_clim():
+ ax = plt.figure().add_subplot()
+ for plot_method in [ax.imshow, ax.pcolor, ax.pcolormesh, ax.pcolorfast]:
+ clim = (7, 8)
+ norm = plot_method([[0, 1], [2, 3]], clim=clim).norm
+ assert (norm.vmin, norm.vmax) == clim
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