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Fix colorbar stealing from a single axes and with panchor=False. #22776

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Merged
merged 1 commit into from
Apr 4, 2022
Merged

Fix colorbar stealing from a single axes and with panchor=False. #22776

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2 changes: 1 addition & 1 deletion lib/matplotlib/colorbar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1617,7 +1617,7 @@ def make_axes_gridspec(parent, *, location=None, orientation=None,
aspect = 1 / aspect

parent.set_subplotspec(ss_main)
parent.set_anchor(panchor)
parent.set_anchor(loc_settings["panchor"])

fig = parent.get_figure()
cax = fig.add_subplot(ss_cb, label="<colorbar>")
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8 changes: 8 additions & 0 deletions lib/matplotlib/tests/test_colorbar.py
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Expand Up @@ -210,6 +210,14 @@ def test_colorbar_positioning(use_gridspec):
anchor=(0.8, 0.5), shrink=0.6, use_gridspec=use_gridspec)


def test_colorbar_single_ax_panchor_false():
# Just smoketesting that this doesn't crash. Note that this differs from
# the tests above with panchor=False because there use_gridspec is actually
# ineffective: passing *ax* as lists always disable use_gridspec.
plt.imshow([[0, 1]])
plt.colorbar(panchor=False)


@image_comparison(['contour_colorbar.png'], remove_text=True)
def test_contour_colorbar():
fig, ax = plt.subplots(figsize=(4, 2))
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