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Merge pull request #17017 from jklymak/fix-blended-transform #17020

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Merged
merged 1 commit into from
Apr 3, 2020
Merged

Merge pull request #17017 from jklymak/fix-blended-transform #17020

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2 changes: 1 addition & 1 deletion lib/matplotlib/collections.py
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Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,7 @@ def get_datalim(self, transData):
# get_path_collection_extents handles nan but not masked arrays

if len(paths) and len(offsets):
if transform.contains_branch(transData):
if any(transform.contains_branch_seperately(transData)):
# collections that are just in data units (like quiver)
# can properly have the axes limits set by their shape +
# offset. LineCollections that have no offsets can
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14 changes: 14 additions & 0 deletions lib/matplotlib/tests/test_collections.py
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Expand Up @@ -718,3 +718,17 @@ def test_EventCollection_nosort():
arr = np.array([3, 2, 1, 10])
coll = EventCollection(arr)
np.testing.assert_array_equal(arr, np.array([3, 2, 1, 10]))


def test_blended_collection_autolim():
a = [1, 2, 4]
height = .2

xy_pairs = np.column_stack([np.repeat(a, 2), np.tile([0, height], len(a))])
line_segs = xy_pairs.reshape([len(a), 2, 2])

f, ax = plt.subplots()
trans = mtransforms.blended_transform_factory(ax.transData, ax.transAxes)
ax.add_collection(LineCollection(line_segs, transform=trans))
ax.autoscale_view(scalex=True, scaley=False)
np.testing.assert_allclose(ax.get_xlim(), [1., 4.])