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Fix: respect animated=True for imshow; add regression test (closes #18985) #30643

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Fix: respect animated=True for imshow; add regression test (closes #18985) #30643

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7 changes: 3 additions & 4 deletions lib/matplotlib/axes/_base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3203,10 +3203,9 @@ def draw(self, renderer):
for _axis in self._axis_map.values():
artists.remove(_axis)

if not self.get_figure(root=True).canvas.is_saving():
artists = [
a for a in artists
if not a.get_animated() or isinstance(a, mimage.AxesImage)]
if not self.figure.canvas.is_saving():
artists = [a for a in artists if not a.get_animated()]

artists = sorted(artists, key=attrgetter('zorder'))

# rasterize artists with negative zorder
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13 changes: 13 additions & 0 deletions lib/matplotlib/tests/test_imshow_animated.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
from matplotlib.testing.decorators import check_figures_equal
import numpy as np


@check_figures_equal()
def test_imshow_respects_animated(fig_test, fig_ref):
rng = np.random.default_rng(19680801)
data = rng.random((8, 8))

ax_t = fig_test.subplots()
ax_t.imshow(data, animated=True) # should be skipped on initial draw

fig_ref.subplots() # blank reference
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