grad
NATIONALE, HISTORIQUE
None
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
COMPOUNDCRS["ATIG geographiques grades Paris (gr) et NGF-BOURDALOUE",
GEOGCRS["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]],
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","ATIGG.BOURD"]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "CompoundCRS",
"name": "ATIG geographiques grades Paris (gr) et NGF-BOURDALOUE",
"components": [
{
"type": "GeographicCRS",
"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
}
}
]
}
},
{
"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": "ATIGG.BOURD"
}
}
{'crs_wkt': 'COMPOUNDCRS["ATIG geographiques grades Paris (gr) et '
'NGF-BOURDALOUE",GEOGCRS["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]],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","ATIGG.BOURD"]]',
'geographic_crs_name': 'ATIG geographiques grades Paris (gr)',
'geopotential_datum_name': 'NGF-BOURDALOUE',
'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}