Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Hungarian Datum 1972", "ellipsoid": { "name": "GRS 1967", "semi_major_axis": 6378160, "inverse_flattening": 298.247167427 }, "scope": "Topographic mapping.", "area": "Hungary.", "bbox": { "south_latitude": 45.74, "west_longitude": 16.11, "north_latitude": 48.58, "east_longitude": 22.9 }, "id": { "authority": "EPSG", "code": 6237 } }