A simple tool for exporting from a PostGIS table to GeoJSON and TopoJSON. Assumes Python 2.7+, psycopg2, and TopoJSON are already installed and in your PATH.

Adapted from Bryan McBride's excellent PHP implementation.

####Example usage:

To export table "boundaries" from database "gisdata" as user "user" with password "password" to both GeoJSON and TopoJSON:

python postgis2geojson.py -d gisdata -t boundaries -u user -p password --topojson

or, also specify that the geometry column is "the_geom", only fields "oid" and "name" should be returned, and the output file should be called "boundary_data":

python postgis2geojson.py -d gisdata -t boundaries -u user -p password -g the_geom -f oid name -o boundary_data --topojson

A full list of options is available via python postgis2geojson.py --help.