Topographic mapping.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Minna", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 }, "scope": "Topographic mapping.", "area": "Nigeria - onshore and offshore.", "bbox": { "south_latitude": 1.92, "west_longitude": 2.66, "north_latitude": 13.9, "east_longitude": 14.65 }, "id": { "authority": "EPSG", "code": 6263 } }