Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Vietnam 2000", "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "scope": "Geodesy, engineering survey, topographic mapping.", "area": "Vietnam - onshore.", "bbox": { "south_latitude": 8.33, "west_longitude": 102.14, "north_latitude": 23.4, "east_longitude": 109.53 }, "id": { "authority": "EPSG", "code": 6756 } }