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Method: Geocentric translations (geog2D domain)
Remarks: Approximation at the 1m level assuming that ETRS89 is equivalent to WGS 84 within the accuracy of the transformation. (RGF93 v1 is a national realization of ETRS89).
Information source: IOGP
Revision date: 2021-09-08
Unit: metre
Geodetic CRS: RGF93 v1
Datum: Reseau Geodesique Francais 1993 v1
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: IGN - Paris
Revision date: 2021-09-08
Scope: Engineering survey, topographic mapping.
Area of use: France - onshore and offshore, mainland and Corsica (France métropolitaine including Corsica).
Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
&stroke=red&width=2&path=41.15,-9.86|51.56,-9.86|51.56,10.38|41.15,10.38|41.15,-9.86)
Center coordinates
489353.59 6587552.2
Projected bounds:
-378305.81 6005281.2
1320649.57 7235612.72
WGS84 bounds:
-9.86 41.15
10.38 51.56
Definition: OGC Well Known Text
PROJCS["RGF93 v1 / Lambert-93", GEOGCS["RGF93 v1", DATUM["Reseau_Geodesique_Francais_1993_v1", SPHEROID["GRS 1980",6378137,298.257222101], TOWGS84[0,0,0,0,0,0,0]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4171"]], PROJECTION["Lambert_Conformal_Conic_2SP"], PARAMETER["latitude_of_origin",46.5], PARAMETER["central_meridian",3], PARAMETER["standard_parallel_1",49], PARAMETER["standard_parallel_2",44], PARAMETER["false_easting",700000], PARAMETER["false_northing",6600000], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","2154"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["RGF93 v1 / Lambert-93", BASEGEOGCRS["RGF93 v1", DATUM["Reseau Geodesique Francais 1993 v1", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4171]], CONVERSION["Lambert-93", METHOD["Lambert Conic Conformal (2SP)", ID["EPSG",9802]], PARAMETER["Latitude of false origin",46.5, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8821]], PARAMETER["Longitude of false origin",3, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8822]], PARAMETER["Latitude of 1st standard parallel",49, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8823]], PARAMETER["Latitude of 2nd standard parallel",44, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8824]], PARAMETER["Easting at false origin",700000, LENGTHUNIT["metre",1], ID["EPSG",8826]], PARAMETER["Northing at false origin",6600000, LENGTHUNIT["metre",1], ID["EPSG",8827]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["France - onshore and offshore, mainland and Corsica (France métropolitaine including Corsica)."], BBOX[41.15,-9.86,51.56,10.38]], ID["EPSG",2154]]
Definition: ESRI Well Known Text
PROJCS["RGF_1993_Lambert_93", GEOGCS["GCS_RGF_1993", DATUM["D_RGF_1993", SPHEROID["GRS_1980",6378137.0,298.257222101]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Lambert_Conformal_Conic"], PARAMETER["False_Easting",700000.0], PARAMETER["False_Northing",6600000.0], PARAMETER["Central_Meridian",3.0], PARAMETER["Standard_Parallel_1",49.0], PARAMETER["Standard_Parallel_2",44.0], PARAMETER["Latitude_Of_Origin",46.5], UNIT["Meter",1.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "RGF93 v1 / Lambert-93", "base_crs": { "name": "RGF93 v1", "datum": { "type": "GeodeticReferenceFrame", "name": "Reseau Geodesique Francais 1993 v1", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4171 } }, "conversion": { "name": "Lambert-93", "method": { "name": "Lambert Conic Conformal (2SP)", "id": { "authority": "EPSG", "code": 9802 } }, "parameters": [ { "name": "Latitude of false origin", "value": 46.5, "unit": "degree", "id": { "authority": "EPSG", "code": 8821 } }, { "name": "Longitude of false origin", "value": 3, "unit": "degree", "id": { "authority": "EPSG", "code": 8822 } }, { "name": "Latitude of 1st standard parallel", "value": 49, "unit": "degree", "id": { "authority": "EPSG", "code": 8823 } }, { "name": "Latitude of 2nd standard parallel", "value": 44, "unit": "degree", "id": { "authority": "EPSG", "code": 8824 } }, { "name": "Easting at false origin", "value": 700000, "unit": "metre", "id": { "authority": "EPSG", "code": 8826 } }, { "name": "Northing at false origin", "value": 6600000, "unit": "metre", "id": { "authority": "EPSG", "code": 8827 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "X", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "Y", "direction": "north", "unit": "metre" } ] }, "scope": "Engineering survey, topographic mapping.", "area": "France - onshore and offshore, mainland and Corsica (France métropolitaine including Corsica).", "bbox": { "south_latitude": 41.15, "west_longitude": -9.86, "north_latitude": 51.56, "east_longitude": 10.38 }, "id": { "authority": "EPSG", "code": 2154 } }
Definition: GeoServer
2154=PROJCS["RGF93 v1 / Lambert-93",GEOGCS["RGF93 v1",DATUM["Reseau_Geodesique_Francais_1993_v1",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4171"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",46.5],PARAMETER["central_meridian",3],PARAMETER["standard_parallel_1",49],PARAMETER["standard_parallel_2",44],PARAMETER["false_easting",700000],PARAMETER["false_northing",6600000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","2154"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"> <Layer srs="+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 2154, 'EPSG', 2154, '+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["RGF93 v1 / Lambert-93",GEOGCS["RGF93 v1",DATUM["Reseau_Geodesique_Francais_1993_v1",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4171"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",46.5],PARAMETER["central_meridian",3],PARAMETER["standard_parallel_1",49],PARAMETER["standard_parallel_2",44],PARAMETER["false_easting",700000],PARAMETER["false_northing",6600000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","2154"]]');
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