How to convert GeoSeries polygons to lists of coordinates?

Question

I have a GeoDataFrame consisting polygons. How can I convert each polygon into a list of coordinates? Is there any attribute, method or function in GeoPandas to do this?

Answer 1

You can use the following list comprehension to achieve this:

[list(shp.geometry.exterior[row_id].coords) for row_id in range(shp.shape[0])]

where shp is your geopandas dataframe. It uses the exterior and coords methods from shapely.

Answer 2

A very effective, very fast solution would be to build a function and then use apply instead of a list comprehension

def coord_lister(geom):
    coords = list(geom.exterior.coords)
    return (coords)

coordinates = shp.geometry.apply(coord_lister)