IGNF:NTFLAMB4.NGC48 - NTF Lambert IV et NIVELLEMENT GENERAL DE LA CORSE (NGC)

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "CompoundCRS",
  "name": "NTF Lambert IV et NIVELLEMENT GENERAL DE LA CORSE (NGC)",
  "components": [
    {
      "type": "ProjectedCRS",
      "name": "NTF Lambert IV",
      "base_crs": {
        "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 IV CORSE",
        "method": {
          "name": "Lambert Conic Conformal (1SP)",
          "id": {
            "authority": "EPSG",
            "code": 9801
          }
        },
        "parameters": [
          {
            "name": "Latitude of natural origin",
            "value": 46.85,
            "unit": {
              "type": "AngularUnit",
              "name": "grad",
              "conversion_factor": 0.0157079632679489
            },
            "id": {
              "authority": "EPSG",
              "code": 8801
            }
          },
          {
            "name": "Longitude of natural origin",
            "value": 0,
            "unit": {
              "type": "AngularUnit",
              "name": "grad",
              "conversion_factor": 0.0157079632679489
            },
            "id": {
              "authority": "EPSG",
              "code": 8802
            }
          },
          {
            "name": "Scale factor at natural origin",
            "value": 0.99994471,
            "unit": "unity",
            "id": {
              "authority": "EPSG",
              "code": 8805
            }
          },
          {
            "name": "False easting",
            "value": 234.358,
            "unit": "metre",
            "id": {
              "authority": "EPSG",
              "code": 8806
            }
          },
          {
            "name": "False northing",
            "value": 185861.369,
            "unit": "metre",
            "id": {
              "authority": "EPSG",
              "code": 8807
            }
          }
        ]
      },
      "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
          {
            "name": "Easting",
            "abbreviation": "X",
            "direction": "east",
            "unit": "metre"
          },
          {
            "name": "Northing",
            "abbreviation": "Y",
            "direction": "north",
            "unit": "metre"
          }
        ]
      }
    },
    {
      "type": "VerticalCRS",
      "name": "NIVELLEMENT GENERAL DE LA CORSE (NGC)",
      "datum": {
        "type": "VerticalReferenceFrame",
        "name": "NIVELLEMENT GENERAL DE LA CORSE (NGC)"
      },
      "coordinate_system": {
        "subtype": "vertical",
        "axis": [
          {
            "name": "Gravity-related height",
            "abbreviation": "H",
            "direction": "up",
            "unit": "metre"
          }
        ]
      }
    }
  ],
  "scope": "LOCALE, HISTORIQUE",
  "area": "CORSE - LAMBERT IV CORSE",
  "bbox": {
    "south_latitude": 41.3100829886572,
    "west_longitude": 8,
    "north_latitude": 43.0200472881681,
    "east_longitude": 10
  },
  "id": {
    "authority": "IGNF",
    "code": "NTFLAMB4.NGC48"
  }
}

{'crs_wkt': 'COMPOUNDCRS["NTF Lambert IV et NIVELLEMENT GENERAL DE LA CORSE '
            '(NGC)",PROJCRS["NTF Lambert IV",BASEGEOGCRS["NTF geographiques '
            'Paris (gr)",DATUM["Nouvelle Triangulation Francaise '
            '(Paris)",ELLIPSOID["Clarke 1880 '
            '(IGN)",6378249.2,293.466021293627,LENGTHUNIT["metre",1]]],PRIMEM["Paris",2.5969213,ANGLEUNIT["grad",0.0157079632679489]],ID["IGNF","NTFPGRAD"]],CONVERSION["LAMBERT '
            'IV CORSE",METHOD["Lambert Conic Conformal '
            '(1SP)",ID["EPSG",9801]],PARAMETER["Latitude of natural '
            'origin",46.85,ANGLEUNIT["grad",0.0157079632679489],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",0,ANGLEUNIT["grad",0.0157079632679489],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",0.99994471,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
            'easting",234.358,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
            'northing",185861.369,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting '
            '(X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing '
            '(Y)",north,ORDER[2],LENGTHUNIT["metre",1]]],VERTCRS["NIVELLEMENT '
            'GENERAL DE LA CORSE (NGC)",VDATUM["NIVELLEMENT GENERAL DE LA '
            'CORSE (NGC)"],CS[vertical,1],AXIS["gravity-related height '
            '(H)",up,LENGTHUNIT["metre",1]]],USAGE[SCOPE["LOCALE, '
            'HISTORIQUE"],AREA["CORSE - LAMBERT IV '
            'CORSE"],BBOX[41.3100829886572,8,43.0200472881681,10]],ID["IGNF","NTFLAMB4.NGC48"]]',
 'false_easting': 234.358,
 'false_northing': 185861.369,
 'geographic_crs_name': 'NTF geographiques Paris (gr)',
 'geopotential_datum_name': 'NIVELLEMENT GENERAL DE LA CORSE (NGC)',
 'grid_mapping_name': 'lambert_conformal_conic',
 'horizontal_datum_name': 'Nouvelle Triangulation Francaise (Paris)',
 'inverse_flattening': 293.466021293627,
 'longitude_of_central_meridian': 0.0,
 'longitude_of_prime_meridian': 2.5969213,
 'prime_meridian_name': 'Paris',
 'projected_crs_name': 'NTF Lambert IV',
 'reference_ellipsoid_name': 'Clarke 1880 (IGN)',
 'semi_major_axis': 6378249.2,
 'semi_minor_axis': 6356515.0,
 'standard_parallel': 46.85}