IGNF:ATIGBONNE.BOURD

Attributes

Unit

metre

Scope

NATIONALE, HISTORIQUE

Remarks

None

Area of use

FRANCE CONTINENTALE (CORSE EXCLUE)

Data Source: EPSG v11.016 2024-08-31

Datum: Ancienne Triangulation Francaise (Paris)

Coordinate System: Undefined

Projection: Undefined

Geodetic CRS: Undefined

Export

COMPOUNDCRS["ATIG Bonne France Etat Major et NGF-BOURDALOUE",
    PROJCRS["ATIG Bonne France Etat Major",
        BASEGEOGCRS["ATIG geographiques grades Paris (gr)",
            DATUM["Ancienne Triangulation Francaise (Paris)",
                ELLIPSOID["Plessis 1817",6376523,308.64,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Paris RGS",2.33720833333333,
                ANGLEUNIT["degree",0.0174532925199433]],
            ID["IGNF","ATIGG"]],
        CONVERSION["BONNE FRANCE - ETAT MAJOR",
            METHOD["Bonne",
                ID["EPSG",9827]],
            PARAMETER["Latitude of natural origin",50,
                ANGLEUNIT["grad",0.0157079632679489],
                ID["EPSG",8801]],
            PARAMETER["Longitude of natural origin",0,
                ANGLEUNIT["grad",0.0157079632679489],
                ID["EPSG",8802]],
            PARAMETER["False easting",0,
                LENGTHUNIT["metre",1],
                ID["EPSG",8806]],
            PARAMETER["False northing",0,
                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["NGF-BOURDALOUE",
        VDATUM["NGF-BOURDALOUE"],
        CS[vertical,1],
            AXIS["gravity-related height (H)",up,
                LENGTHUNIT["metre",1]]],
    USAGE[
        SCOPE["NATIONALE, HISTORIQUE"],
        AREA["FRANCE CONTINENTALE (CORSE EXCLUE)"],
        BBOX[42,-5.5,51.5,8.5]],
    ID["IGNF","ATIGBONNE.BOURD"]]

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "CompoundCRS",
  "name": "ATIG Bonne France Etat Major et NGF-BOURDALOUE",
  "components": [
    {
      "type": "ProjectedCRS",
      "name": "ATIG Bonne France Etat Major",
      "base_crs": {
        "name": "ATIG geographiques grades Paris (gr)",
        "datum": {
          "type": "GeodeticReferenceFrame",
          "name": "Ancienne Triangulation Francaise (Paris)",
          "ellipsoid": {
            "name": "Plessis 1817",
            "semi_major_axis": 6376523,
            "inverse_flattening": 308.64
          },
          "prime_meridian": {
            "name": "Paris RGS",
            "longitude": 2.33720833333333
          }
        },
        "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": "ATIGG"
        }
      },
      "conversion": {
        "name": "BONNE FRANCE - ETAT MAJOR",
        "method": {
          "name": "Bonne",
          "id": {
            "authority": "EPSG",
            "code": 9827
          }
        },
        "parameters": [
          {
            "name": "Latitude of natural origin",
            "value": 50,
            "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": "False easting",
            "value": 0,
            "unit": "metre",
            "id": {
              "authority": "EPSG",
              "code": 8806
            }
          },
          {
            "name": "False northing",
            "value": 0,
            "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": "NGF-BOURDALOUE",
      "datum": {
        "type": "VerticalReferenceFrame",
        "name": "NGF-BOURDALOUE"
      },
      "coordinate_system": {
        "subtype": "vertical",
        "axis": [
          {
            "name": "Gravity-related height",
            "abbreviation": "H",
            "direction": "up",
            "unit": "metre"
          }
        ]
      }
    }
  ],
  "scope": "NATIONALE, HISTORIQUE",
  "area": "FRANCE CONTINENTALE (CORSE EXCLUE)",
  "bbox": {
    "south_latitude": 42,
    "west_longitude": -5.5,
    "north_latitude": 51.5,
    "east_longitude": 8.5
  },
  "id": {
    "authority": "IGNF",
    "code": "ATIGBONNE.BOURD"
  }
}