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:¶

poly1 : libpysal.cg.Polygon¶

A Polygon.

poly2 : libpysal.cg.Polygon¶

A Polygon.

bool_ret : bool¶

Return only a bool. Default is False.

Returns:¶

• common (list) – The shared line segments between poly1 and poly2.

• _ret_bool (bool) – 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