• It gets the total area in km² of Polygon and MultiPolygon features that there are in a GeoJSON file.

Return:

Number - total area in km².

Command line:

docker run --rm -v ${PWD}:/mnt/data developmentseed/geokit:node.latest geokit \
    area input.geojson

Use Case:

• Get the total area in km² of the all polygons.