{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"ProjectedCRS","name":"NTF Lambert Grand Champ","base_crs":{"type":"GeographicCRS","name":"NTF geographiques Paris (gr)","datum":{"type":"GeodeticReferenceFrame","name":"Nouvelle Triangulation Francaise (Paris)","ellipsoid":{"name":"Clarke 1880 (IGN)","semi_major_axis":6378249.2,"semi_minor_axis":6356515},"prime_meridian":{"name":"Paris","longitude":{"value":2.5969213,"unit":{"type":"AngularUnit","name":"grad","conversion_factor":0.0157079632679489}}}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":{"type":"AngularUnit","name":"grad","conversion_factor":0.0157079632679489}},{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":{"type":"AngularUnit","name":"grad","conversion_factor":0.0157079632679489}}]},"id":{"authority":"IGNF","code":"NTFPGRAD"}},"conversion":{"name":"LAMBERT GRAND CHAMP","method":{"name":"Lambert Conic Conformal (2SP)","id":{"authority":"EPSG","code":9802}},"parameters":[{"name":"Latitude of false origin","value":47,"unit":"degree","id":{"authority":"EPSG","code":8821}},{"name":"Longitude of false origin","value":0,"unit":"degree","id":{"authority":"EPSG","code":8822}},{"name":"Latitude of 1st standard parallel","value":45,"unit":"degree","id":{"authority":"EPSG","code":8823}},{"name":"Latitude of 2nd standard parallel","value":49,"unit":"degree","id":{"authority":"EPSG","code":8824}},{"name":"Easting at false origin","value":600000,"unit":"metre","id":{"authority":"EPSG","code":8826}},{"name":"Northing at false origin","value":600000,"unit":"metre","id":{"authority":"EPSG","code":8827}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Easting","abbreviation":"X","direction":"east","unit":"metre"},{"name":"Northing","abbreviation":"Y","direction":"north","unit":"metre"}]},"scope":"NATIONALE, HISTORIQUE","area":"FRANCE METROPOLITAINE (CORSE COMPRISE) - LAMBERT GRAND CHAMP","bbox":{"south_latitude":41.310015543796,"west_longitude":-4.05379920354209,"north_latitude":51.299958070717,"east_longitude":10},"id":{"authority":"IGNF","code":"NTFLAMBGC"}}