Converting A Column Of Polygons From String To Geopandas Geometry

I have a dataframe stored as csv file, one column of which is Polygon object. However, this column is stored as strings instead of GeoPandas geometry object. How can I convert this

Solution 1:

The format of your polygon is WKT, so you have to convert it to shapely Polygon. Following Geopandas docs (https://geopandas.readthedocs.io/en/latest/gallery/create_geopandas_from_pandas.html) do following

Using GeoPandas 0.9+:

df['geometry'] = gpd.GeoSeries.from_wkt(df['geometry'])
my_geo_df = gpd.GeoDataFrame(my_df, geometry='geometry')

Using older versions:

from shapely import wkt

df['geometry'] = df['geometry'].apply(wkt.loads)
my_geo_df = gpd.GeoDataFrame(my_df, geometry='geometry')