Topographic mapping.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Indian 1975", "ellipsoid": { "name": "Everest 1830 (1937 Adjustment)", "semi_major_axis": 6377276.345, "inverse_flattening": 300.8017 }, "scope": "Topographic mapping.", "area": "Thailand - onshore plus offshore Gulf of Thailand.", "bbox": { "south_latitude": 5.63, "west_longitude": 97.34, "north_latitude": 20.46, "east_longitude": 105.64 }, "id": { "authority": "EPSG", "code": 6240 } }