Unit: degree (supplier to define representation)
Geodetic CRS: LTF2004(G)
Datum: Lyon Turin Ferroviaire 2004
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: TELT via IGN France.
Revision date: 2021-01-13
Scope: Engineering survey and mapping for the Trans-Europe Lyon-Turin (TELT) railway project.
Area of use: France and Italy - on or related to the rail route from Lyon to Turin.
Coordinate system: Ellipsoidal 3D CS. Axes: latitude, longitude, ellipsoidal height. Orientations: north, east, up. UoM: degree, degree, metre.
Center coordinates
6.27 45.38
Projected bounds:
4.65 44.87
7.88 45.89
WGS84 bounds:
4.65 44.87
7.88 45.89
Definition: OGC Well Known Text 2 (2019)
GEOGCRS["LTF2004(G)", DATUM["Lyon Turin Ferroviaire 2004", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey and mapping for the Trans-Europe Lyon-Turin (TELT) railway project."], AREA["France and Italy - on or related to the rail route from Lyon to Turin."], BBOX[44.87,4.65,45.89,7.88]], ID["EPSG",9546]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeographicCRS", "name": "LTF2004(G)", "datum": { "type": "GeodeticReferenceFrame", "name": "Lyon Turin Ferroviaire 2004", "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" }, { "name": "Ellipsoidal height", "abbreviation": "h", "direction": "up", "unit": "metre" } ] }, "scope": "Engineering survey and mapping for the Trans-Europe Lyon-Turin (TELT) railway project.", "area": "France and Italy - on or related to the rail route from Lyon to Turin.", "bbox": { "south_latitude": 44.87, "west_longitude": 4.65, "north_latitude": 45.89, "east_longitude": 7.88 }, "id": { "authority": "EPSG", "code": 9546 } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs"> <Layer srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs"> </Layer> </Map>