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FIX: remove warning when clearing axes with shared axis #32069

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Merged
QuLogic merged 6 commits into from
Jul 22, 2026
+25 −1
Merged

FIX: remove warning when clearing axes with shared axis #32069

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7c778f9
_set_scale emit flag
Jul 18, 2026
a7da0bb
less invasive way, just in clear
Jul 18, 2026
6e2cf42
removed _set_scale change
Jul 18, 2026
1403215
added test
Jul 19, 2026
4c1987e
recwarn
Jul 19, 2026
7be82a4
axis_map.values -> items()
Jul 22, 2026
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7 changes: 6 additions & 1 deletion lib/matplotlib/axes/_base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1354,8 +1354,13 @@ def __clear(self):
xaxis_visible = self.xaxis.get_visible()
yaxis_visible = self.yaxis.get_visible()

for axis in self._axis_map.values():
for name, axis in self._axis_map.items():
axis.clear() # Also resets the scale to linear.
# need to do any shared axis scales as well
for other in axis._get_shared_axes():
if other is self.axes:
continue
other._axis_map[name]._set_scale("linear")
for spine in self.spines.values():
spine._clear() # Use _clear to not clear Axis again

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19 changes: 19 additions & 0 deletions lib/matplotlib/tests/test_axes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@
from matplotlib.projections.geo import HammerAxes
from matplotlib.projections.polar import PolarAxes
import matplotlib.pyplot as plt
import matplotlib.scale as mscales
import matplotlib.text as mtext
import matplotlib.ticker as mticker
import matplotlib.transforms as mtransforms
Expand Down Expand Up @@ -9308,6 +9309,24 @@ def test_shared_axes_clear(fig_test, fig_ref):
ax.plot(x, y)


def test_shared_axes_clear_scale(recwarn):
_, axs = plt.subplots(1, 2, sharey=True)
x = range(1, 10)
axs[0].loglog(x, x)
axs[1].loglog(x, x)
axs[0].clear()

assert len(recwarn) == 0

# the cleared axes has linear on both axis
for axis in axs[0]._axis_map.values():
assert isinstance(axis._scale, mscales.LinearScale)

# the linked axes becomes linear on the shared y-axis
assert isinstance(axs[1].xaxis._scale, mscales.LogScale)
assert isinstance(axs[1].yaxis._scale, mscales.LinearScale)


def test_shared_axes_retick():
fig, axs = plt.subplots(2, 2, sharex='all', sharey='all')

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