shapely.shared_paths

shared_paths(a, b, **kwargs)

Returns the shared paths between geom1 and geom2.

Both geometries should be linestrings or arrays of linestrings. A geometrycollection or array of geometrycollections is returned with two elements in each geometrycollection. The first element is a multilinestring containing shared paths with the same direction for both inputs. The second element is a multilinestring containing shared paths with the opposite direction for the two inputs.

Parameters:

aGeometry or array_like

bGeometry or array_like

**kwargs

For other keyword-only arguments, see the NumPy ufunc docs.

Examples

>>> from shapely import LineString
>>> line1 = LineString([(0, 0), (1, 0), (1, 1), (0, 1), (0, 0)])
>>> line2 = LineString([(1, 0), (2, 0), (2, 1), (1, 1), (1, 0)])
>>> shared_paths(line1, line2).wkt
'GEOMETRYCOLLECTION (MULTILINESTRING EMPTY, MULTILINESTRING ((1 0, 1 1)))'
>>> line3 = LineString([(1, 1), (0, 1)])
>>> shared_paths(line1, line3).wkt
'GEOMETRYCOLLECTION (MULTILINESTRING ((1 1, 0 1)), MULTILINESTRING EMPTY)'