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MNT: Raise NotImplementedError for 3D semilog plots #31260

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Merged
anntzer merged 1 commit into from
Mar 10, 2026
Merged

MNT: Raise NotImplementedError for 3D semilog plots #31260

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12 changes: 12 additions & 0 deletions lib/mpl_toolkits/mplot3d/axes3d.py
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
"""

from collections import defaultdict
from functools import partialmethod
import itertools
import math
import textwrap
Expand Down Expand Up @@ -1196,6 +1197,17 @@ def set_zscale(self, value, **kwargs):
"""
self._set_axis_scale(self.zaxis, value, **kwargs)

def _raise_semilog_not_implemented(self, name, *args, **kwargs):
raise NotImplementedError(
f"Axes3D does not support {name}. Use ax.set_xscale/set_yscale/set_zscale "
"and ax.plot(...) instead."
)

semilogx = partialmethod(_raise_semilog_not_implemented, "semilogx")
semilogy = partialmethod(_raise_semilog_not_implemented, "semilogy")
semilogz = partialmethod(_raise_semilog_not_implemented, "semilogz")
loglog = partialmethod(_raise_semilog_not_implemented, "loglog")

get_zticks = _axis_method_wrapper("zaxis", "get_ticklocs")
set_zticks = _axis_method_wrapper("zaxis", "set_ticks")
get_zmajorticklabels = _axis_method_wrapper("zaxis", "get_majorticklabels")
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9 changes: 9 additions & 0 deletions lib/mpl_toolkits/mplot3d/tests/test_axes3d.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3169,6 +3169,15 @@ def test_scale3d_autoscale_with_log():
assert lim[1] > 0, f"{name} upper limit should be positive"


@pytest.mark.parametrize("method", ["semilogx", "semilogy", "semilogz", "loglog"])
def test_semilog_loglog_not_implemented(method):
"""semilogx/y/z and loglog should raise NotImplementedError on Axes3D."""
fig = plt.figure()
ax = fig.add_subplot(projection='3d')
with pytest.raises(NotImplementedError, match="Axes3D does not support"):
getattr(ax, method)([1, 10, 100], [1, 2, 3])


def test_scale3d_calc_coord():
"""_calc_coord should return data coordinates with correct pane values."""
fig = plt.figure()
Expand Down
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