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Backport PR #21762 on branch v3.5.x (FIX: align_x/ylabels) #21764

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Merged
merged 1 commit into from
Nov 26, 2021
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Merged

Backport PR #21762 on branch v3.5.x (FIX: align_x/ylabels) #21764

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4 changes: 4 additions & 0 deletions lib/matplotlib/figure.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1247,6 +1247,8 @@ def align_xlabels(self, axs=None):
if axs is None:
axs = self.axes
axs = np.ravel(axs)
axs = [ax for ax in axs if hasattr(ax, 'get_subplotspec')]

for ax in axs:
_log.debug(' Working on: %s', ax.get_xlabel())
rowspan = ax.get_subplotspec().rowspan
Expand Down Expand Up @@ -1307,6 +1309,8 @@ def align_ylabels(self, axs=None):
if axs is None:
axs = self.axes
axs = np.ravel(axs)
axs = [ax for ax in axs if hasattr(ax, 'get_subplotspec')]

for ax in axs:
_log.debug(' Working on: %s', ax.get_ylabel())
colspan = ax.get_subplotspec().colspan
Expand Down
35 changes: 35 additions & 0 deletions lib/matplotlib/tests/test_figure.py
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,41 @@ def test_align_labels():
fig.align_labels()


def test_align_labels_stray_axes():
fig, axs = plt.subplots(2, 2)
for nn, ax in enumerate(axs.flat):
ax.set_xlabel('Boo')
ax.set_xlabel('Who')
ax.plot(np.arange(4)**nn, np.arange(4)**nn)
fig.align_ylabels()
fig.align_xlabels()
fig.draw_without_rendering()
xn = np.zeros(4)
yn = np.zeros(4)
for nn, ax in enumerate(axs.flat):
yn[nn] = ax.xaxis.label.get_position()[1]
xn[nn] = ax.yaxis.label.get_position()[0]
np.testing.assert_allclose(xn[:2], xn[2:])
np.testing.assert_allclose(yn[::2], yn[1::2])

fig, axs = plt.subplots(2, 2, constrained_layout=True)
for nn, ax in enumerate(axs.flat):
ax.set_xlabel('Boo')
ax.set_xlabel('Who')
pc = ax.pcolormesh(np.random.randn(10, 10))
fig.colorbar(pc, ax=ax)
fig.align_ylabels()
fig.align_xlabels()
fig.draw_without_rendering()
xn = np.zeros(4)
yn = np.zeros(4)
for nn, ax in enumerate(axs.flat):
yn[nn] = ax.xaxis.label.get_position()[1]
xn[nn] = ax.yaxis.label.get_position()[0]
np.testing.assert_allclose(xn[:2], xn[2:])
np.testing.assert_allclose(yn[::2], yn[1::2])


def test_figure_label():
# pyplot figure creation, selection, and closing with label/number/instance
plt.close('all')
Expand Down