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Fix Line3D.draw AttributeError for list coordinates with NaN #32306

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Fix Line3D.draw AttributeError for list coordinates with NaN #32306

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1028e53
Fix Line3D.draw AttributeError for list coordinates with NaN
ShamikOfficial Sep 5, 2026
fee15fd
Drop comment on set_data_3d asarray coercion.
ShamikOfficial Sep 7, 2026
08bbdb2
Use np.shape in Line3D.draw for array-like coords.
ShamikOfficial Sep 8, 2026
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2 changes: 1 addition & 1 deletion lib/mpl_toolkits/mplot3d/art3d.py
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Original file line number Diff line number Diff line change
Expand Up @@ -360,7 +360,7 @@ def draw(self, renderer):
if np.any(scale_mask):
mask = np.broadcast_to(
scale_mask,
(len(self._verts3d), *self._verts3d[0].shape)
(len(self._verts3d), *np.shape(self._verts3d[0]))
)
xs3d, ys3d, zs3d = np.ma.array(self._verts3d,
dtype=float, mask=mask).filled(np.nan)
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12 changes: 12 additions & 0 deletions lib/mpl_toolkits/mplot3d/tests/test_art3d.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,18 @@
)


def test_line3d_set_data_3d_list_with_nan():
# Regression test for #32127: set_data_3d stores array-like as given, and
# draw must not require ndarray .shape when a coordinate is non-finite.
fig = plt.figure()
ax = fig.add_subplot(projection="3d")
line, = ax.plot([0.0], [0.0], [0.0])
xs, ys, zs = [float("nan")], [float("nan")], [float("nan")]
line.set_data_3d(xs, ys, zs)
assert line.get_data_3d() == (xs, ys, zs)
fig.canvas.draw()


@pytest.mark.parametrize("zdir, expected", [
("x", (1, 0, 0)),
("y", (0, 1, 0)),
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