How to create a shapely Polygon from a list of shapely Points?

Question

I want to create a polygon from shapely points.

from shapely import geometry p1 = geometry.Point(0,0) p2 = geometry.Point(1,0) p3 = geometry.Point(1,1) p4 = geometry.Point(0,1)  pointList = [p1, p2, p3, p4, p1]  poly = geometry.Polygon(pointList) 

gives me an type error TypeError: object of type 'Point' has no len()

How to create a Polygon from shapely Point objects?

Answer 1

If you specifically want to construct your Polygon from the shapely geometry Points, then call their x, y properties in a list comprehension. In other words:

from shapely import geometry  poly = geometry.Polygon([[p.x, p.y] for p in pointList])  print(poly.wkt)  # prints: 'POLYGON ((0 0, 1 0, 1 1, 0 1, 0 0))' 

Note that shapely is clever enough to close the polygon on your behalf, i.e. you don't necessarily have to pass-in the first point again at the end.