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Better axis limits when using shared axes and empty subplots #2357

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Merged
dmcdougall merged 1 commit into from
Aug 31, 2013
Merged

Better axis limits when using shared axes and empty subplots #2357

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12 changes: 10 additions & 2 deletions lib/matplotlib/axes/_base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1895,6 +1895,11 @@ def autoscale_view(self, tight=None, scalex=True, scaley=True):
if scalex and self._autoscaleXon:
xshared = self._shared_x_axes.get_siblings(self)
dl = [ax.dataLim for ax in xshared]
#ignore non-finite data limits if good limits exist
finite_dl = [d for d in dl if np.isfinite(d).all()]
if len(finite_dl):
dl = finite_dl

bb = mtransforms.BboxBase.union(dl)
x0, x1 = bb.intervalx
xlocator = self.xaxis.get_major_locator()
Expand All @@ -1916,6 +1921,11 @@ def autoscale_view(self, tight=None, scalex=True, scaley=True):
if scaley and self._autoscaleYon:
yshared = self._shared_y_axes.get_siblings(self)
dl = [ax.dataLim for ax in yshared]
#ignore non-finite data limits if good limits exist
finite_dl = [d for d in dl if np.isfinite(d).all()]
if len(finite_dl):
dl = finite_dl

bb = mtransforms.BboxBase.union(dl)
y0, y1 = bb.intervaly
ylocator = self.yaxis.get_major_locator()
Expand Down Expand Up @@ -3257,5 +3267,3 @@ def get_shared_x_axes(self):
def get_shared_y_axes(self):
'Return a copy of the shared axes Grouper object for y axes'
return self._shared_y_axes


13 changes: 13 additions & 0 deletions lib/matplotlib/tests/test_axes.py
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Expand Up @@ -1708,6 +1708,19 @@ def test_vline_limit():
assert ymax == 0.25


@cleanup
def test_empty_shared_subplots():
#empty plots with shared axes inherit limits from populated plots
fig, axes = plt.subplots(nrows=1, ncols=2, sharex=True, sharey=True)
axes[0].plot([1,2,3], [2, 4, 6])
x0, x1 = axes[1].get_xlim()
y0, y1 = axes[1].get_ylim()
assert x0 <= 1
assert x1 >= 3
assert y0 <= 2
assert y1 >= 6


if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s', '--with-doctest'], exit=False)