grad
Geodesy.
None
France - mainland onshore.
Data Source: EPSG v11.016 2024-08-31
Datum: Ancienne Triangulation Francaise (Paris)
Coordinate System: ellipsoidal
Projection: Undefined
Geodetic CRS: Undefined
GEOGCRS["ATF (Paris)",
DATUM["Ancienne Triangulation Francaise (Paris)",
ELLIPSOID["Plessis 1817",6376523,308.64,
LENGTHUNIT["metre",1]]],
PRIMEM["Paris RGS",2.33720833333333,
ANGLEUNIT["degree",0.0174532925199433]],
CS[ellipsoidal,2],
AXIS["geodetic latitude (Lat)",north,
ORDER[1],
ANGLEUNIT["grad",0.0157079632679489]],
AXIS["geodetic longitude (Lon)",east,
ORDER[2],
ANGLEUNIT["grad",0.0157079632679489]],
USAGE[
SCOPE["Geodesy."],
AREA["France - mainland onshore."],
BBOX[42.33,-4.87,51.14,8.23]],
ID["EPSG",4901]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "GeographicCRS",
"name": "ATF (Paris)",
"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 latitude",
"abbreviation": "Lat",
"direction": "north",
"unit": {
"type": "AngularUnit",
"name": "grad",
"conversion_factor": 0.0157079632679489
}
},
{
"name": "Geodetic longitude",
"abbreviation": "Lon",
"direction": "east",
"unit": {
"type": "AngularUnit",
"name": "grad",
"conversion_factor": 0.0157079632679489
}
}
]
},
"scope": "Geodesy.",
"area": "France - mainland onshore.",
"bbox": {
"south_latitude": 42.33,
"west_longitude": -4.87,
"north_latitude": 51.14,
"east_longitude": 8.23
},
"id": {
"authority": "EPSG",
"code": 4901
}
}
{'crs_wkt': 'GEOGCRS["ATF (Paris)",DATUM["Ancienne Triangulation Francaise '
'(Paris)",ELLIPSOID["Plessis '
'1817",6376523,308.64,LENGTHUNIT["metre",1]]],PRIMEM["Paris '
'RGS",2.33720833333333,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic '
'latitude '
'(Lat)",north,ORDER[1],ANGLEUNIT["grad",0.0157079632679489]],AXIS["geodetic '
'longitude '
'(Lon)",east,ORDER[2],ANGLEUNIT["grad",0.0157079632679489]],USAGE[SCOPE["Geodesy."],AREA["France '
'- mainland '
'onshore."],BBOX[42.33,-4.87,51.14,8.23]],ID["EPSG",4901]]',
'geographic_crs_name': 'ATF (Paris)',
'grid_mapping_name': 'latitude_longitude',
'horizontal_datum_name': 'Ancienne Triangulation Francaise (Paris)',
'inverse_flattening': 308.64,
'longitude_of_prime_meridian': 2.3372083333333333,
'prime_meridian_name': 'Paris RGS',
'reference_ellipsoid_name': 'Plessis 1817',
'semi_major_axis': 6376523.0,
'semi_minor_axis': 6355862.933255573}