From ba1b912700ad68ea44ac3dc4790a0f10d748508c Mon Sep 17 00:00:00 2001 From: Antony Lee Date: Thu, 2 Feb 2023 21:41:43 +0100 Subject: [PATCH] Backport PR #25126: FIX: fully invalidate TransformWrapper parents before swapping --- lib/matplotlib/tests/test_transforms.py | 16 +++++++++++++++- lib/matplotlib/transforms.py | 1 + 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/lib/matplotlib/tests/test_transforms.py b/lib/matplotlib/tests/test_transforms.py index 1501a918b9c8..064a7240c39d 100644 --- a/lib/matplotlib/tests/test_transforms.py +++ b/lib/matplotlib/tests/test_transforms.py @@ -10,7 +10,7 @@ import matplotlib.patches as mpatches import matplotlib.transforms as mtransforms from matplotlib.path import Path -from matplotlib.testing.decorators import image_comparison +from matplotlib.testing.decorators import image_comparison, check_figures_equal def test_non_affine_caching(): @@ -730,3 +730,17 @@ def test_transformwrapper(): r"The input and output dims of the new child \(1, 1\) " r"do not match those of current child \(2, 2\)")): t.set(scale.LogTransform(10)) + + +@check_figures_equal(extensions=["png"]) +def test_scale_swapping(fig_test, fig_ref): + np.random.seed(19680801) + samples = np.random.normal(size=10) + x = np.linspace(-5, 5, 10) + + for fig, log_state in zip([fig_test, fig_ref], [True, False]): + ax = fig.subplots() + ax.hist(samples, log=log_state, density=True) + ax.plot(x, np.exp(-(x**2) / 2) / np.sqrt(2 * np.pi)) + fig.canvas.draw() + ax.set_yscale('linear') diff --git a/lib/matplotlib/transforms.py b/lib/matplotlib/transforms.py index 7a2d20b21bc7..c5c051be570f 100644 --- a/lib/matplotlib/transforms.py +++ b/lib/matplotlib/transforms.py @@ -1719,6 +1719,7 @@ def set(self, child): dimensions as the current child. """ if hasattr(self, "_child"): # Absent during init. + self.invalidate() new_dims = (child.input_dims, child.output_dims) old_dims = (self._child.input_dims, self._child.output_dims) if new_dims != old_dims: pFad - Phonifier reborn

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