Topographic mapping.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Gambia", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 }, "scope": "Topographic mapping.", "area": "Gambia - onshore.", "bbox": { "south_latitude": 13.05, "west_longitude": -16.88, "north_latitude": 13.83, "east_longitude": -13.79 }, "id": { "authority": "EPSG", "code": 1139 } }