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ENH: Allow a single geometry in add_geometries #1999

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Jan 27, 2022
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ENH: Allow a single geometry in add_geometries #1999

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2 changes: 2 additions & 0 deletions lib/cartopy/feature/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -214,6 +214,8 @@ def __init__(self, geometries, crs, **kwargs):

"""
super().__init__(crs, **kwargs)
if isinstance(geometries, sgeom.base.BaseGeometry):
geometries = [geometries]
self._geoms = tuple(geometries)

def geometries(self):
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9 changes: 9 additions & 0 deletions lib/cartopy/tests/mpl/test_axes.py
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Expand Up @@ -13,6 +13,7 @@
import pytest

import cartopy.crs as ccrs
import cartopy.feature as cfeature
from cartopy.mpl.geoaxes import InterProjectionTransform, GeoAxes


Expand Down Expand Up @@ -108,6 +109,14 @@ def test_styler_kwarg(self, ShapelyFeature, add_feature_method):
add_feature_method.assert_called_once_with(
ShapelyFeature(), styler=mock.sentinel.styler)

@pytest.mark.natural_earth
def test_single_geometry(self):
# A single geometry is acceptable
proj = ccrs.PlateCarree()
ax = GeoAxes(plt.figure(), [0, 0, 1, 1],
map_projection=proj)
ax.add_geometries(next(cfeature.COASTLINE.geometries()), crs=proj)


@cleanup
def test_geoaxes_subplot():
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