ogr2ogr produces invalid GeoJSON when multiple layers are involved (http://trac.osgeo.org/gdal/ticket/3842). For example: ogr2ogr -f GeoJSON "$f.json" "$f" tracks routes For me the bad GeoJSON ...
I have a request to provide GPX files of certain trails (around 100) that are present in OpenStreetMap. Given a local PostGIS install with OSM data, I think the process would be something like: ...
I would like to convert the tree inventory shape files of London (Canada) into a GPX file and if possible into a JSON file. You can download the archive from their Open Data website. It contains the ...