grad
NATIONALE, HISTORIQUE
None
FRANCE CONTINENTALE (CORSE EXCLUE)
Data Source: EPSG v11.016 2024-08-31
Datum: Nouvelle Triangulation Francaise (Paris)
Coordinate System: Undefined
Projection: Undefined
Geodetic CRS: Undefined
COMPOUNDCRS["NTF geographiques Paris (gr) et NGF-BOURDALOUE",
GEOGCRS["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]],
CS[ellipsoidal,2],
AXIS["geodetic longitude (Lon)",east,
ORDER[1],
ANGLEUNIT["grad",0.0157079632679489]],
AXIS["geodetic latitude (Lat)",north,
ORDER[2],
ANGLEUNIT["grad",0.0157079632679489]]],
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","NTFPGRAD.BOURD"]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "CompoundCRS",
"name": "NTF geographiques Paris (gr) et NGF-BOURDALOUE",
"components": [
{
"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
}
}
]
}
},
{
"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": "NTFPGRAD.BOURD"
}
}
{'crs_wkt': 'COMPOUNDCRS["NTF geographiques Paris (gr) et '
'NGF-BOURDALOUE",GEOGCRS["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]],CS[ellipsoidal,2],AXIS["geodetic '
'longitude '
'(Lon)",east,ORDER[1],ANGLEUNIT["grad",0.0157079632679489]],AXIS["geodetic '
'latitude '
'(Lat)",north,ORDER[2],ANGLEUNIT["grad",0.0157079632679489]]],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","NTFPGRAD.BOURD"]]',
'geographic_crs_name': 'NTF geographiques Paris (gr)',
'geopotential_datum_name': 'NGF-BOURDALOUE',
'grid_mapping_name': 'latitude_longitude',
'horizontal_datum_name': 'Nouvelle Triangulation Francaise (Paris)',
'inverse_flattening': 293.466021293627,
'longitude_of_prime_meridian': 2.5969213,
'prime_meridian_name': 'Paris',
'reference_ellipsoid_name': 'Clarke 1880 (IGN)',
'semi_major_axis': 6378249.2,
'semi_minor_axis': 6356515.0}