Merge pull request #31260 from scottshambaugh/3d_semilog

anntzer · web-flow · commit c0e089d68aec · 2026-03-10T22:05:25.000+01:00
MNT: Raise NotImplementedError for 3D semilog plots
diff --git a/lib/mpl_toolkits/mplot3d/axes3d.py b/lib/mpl_toolkits/mplot3d/axes3d.py
@@ -31,6 +31,7 @@
 """
 
 from collections import defaultdict
+from functools import partialmethod
 import itertools
 import math
 import textwrap
@@ -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")
diff --git a/lib/mpl_toolkits/mplot3d/tests/test_axes3d.py b/lib/mpl_toolkits/mplot3d/tests/test_axes3d.py
@@ -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()
