["python","polygon","shapely"]
Extract points/coordinates from a polygon in Shapely

How do you get/extract the points that define a shapely polygon? Thanks! Example of a shapely polygon from shapely.geometry import Polygon # Create polygon from lists of points x = [list of x vals] y = [list of y vals] polygon = Polygon(x,y)
The trick is to use a combination of the Polygon class methods: from shapely.geometry import Polygon # Create polygon from lists of points x = [0.0, 0.0, 1.0, 1.0, 0.0] y = [0.0, 1.0, 1.0, 0.0, 0.0] poly = Polygon(zip(x,y)) # Extract the point values that define the perimeter of the polygon xx, yy = poly.exterior.coords.xy # Note above return values are of type `array.array` assert x == xx.tolist() assert y == yy.tolist() If you would like them as coordinate pairs assert tuple(poly.exterior.coords) == tuple(zip(x,y)) or as a numpy array assert np.array_equal(np.array(poly.exterior.coords), np.asarray(tuple(zip(x,y))))