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FIX: better error message for shared axes and axis('equal') #21318

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Merged
timhoffm merged 3 commits into from
Nov 23, 2021
Merged

FIX: better error message for shared axes and axis('equal') #21318

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f238f1b
FIX: better error message for shared axes and axis('equal')
jklymak Oct 8, 2021
2ad34af
TST: add test for error
jklymak Oct 15, 2021
e07c28f
FIX: remove extra try/except
jklymak Nov 23, 2021
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9 changes: 5 additions & 4 deletions lib/matplotlib/axes/_base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1939,10 +1939,12 @@ def apply_aspect(self, position=None):

shared_x = self in self._shared_axes["x"]
shared_y = self in self._shared_axes["y"]
# Not sure whether we need this check:

if shared_x and shared_y:
raise RuntimeError("adjustable='datalim' is not allowed when both "
"axes are shared")
raise RuntimeError("set_aspect(..., adjustable='datalim') or "
"axis('equal') are not allowed when both axes "
"are shared. Try set_aspect(..., "
"adjustable='box').")

# If y is shared, then we are only allowed to change x, etc.
if shared_y:
Expand Down Expand Up @@ -2042,7 +2044,6 @@ def axis(self, *args, emit=True, **kwargs):
self.set_autoscale_on(True)
self.set_aspect('auto')
self.autoscale_view(tight=False)
# self.apply_aspect()
if s == 'equal':
self.set_aspect('equal', adjustable='datalim')
elif s == 'scaled':
Expand Down
7 changes: 7 additions & 0 deletions lib/matplotlib/tests/test_axes.py
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Expand Up @@ -4938,6 +4938,13 @@ def test_shared_with_aspect_3():
assert round(expected, 4) == round(ax.get_aspect(), 4)


def test_shared_aspect_error():
fig, axes = plt.subplots(1, 2, sharex=True, sharey=True)
axes[0].axis("equal")
with pytest.raises(RuntimeError, match=r"set_aspect\(..., adjustable="):
fig.draw_without_rendering()


@pytest.mark.parametrize('twin', ('x', 'y'))
def test_twin_with_aspect(twin):
fig, ax = plt.subplots()
Expand Down