libpysal.cg.get_shared_segments¶

libpysal.cg.get_shared_segments(poly1, poly2, bool_ret=False)[source]¶

Returns the line segments in common to both polygons.

Parameters:

poly1libpysal.cg.Polygon: A Polygon.
poly2libpysal.cg.Polygon: A Polygon.
bool_retbool: Return only a bool. Default is False.

Returns:

commonlist: The shared line segments between poly1 and poly2.
_ret_boolbool: Whether poly1 and poly2 share a segment (True) or not (False).

Examples

>>> from libpysal.cg.shapes import Polygon
>>> x = [0, 0, 1, 1]
>>> y = [0, 1, 1, 0]
>>> poly1 = Polygon(list(map(Point, zip(x, y))) )
>>> x = [a+1 for a in x]
>>> poly2 = Polygon(list(map(Point, zip(x, y))) )
>>> get_shared_segments(poly1, poly2, bool_ret=True)
True