EPSG:4275

NTF

Transform Get position on a map

Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: These same parameter values are used to transform to ETRS89. See NTF to ETRS89 (1) (code 1651).

Information source: IGN technical report RT/G 14; January 1988.

Revision date: 2021-09-23

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: NTF

Datum: Nouvelle Triangulation Francaise

Ellipsoid: Clarke 1880 (IGN)

Prime meridian: Greenwich

Data source: EPSG

Revision date: 2010-03-30

Scope: Geodesy.

Area of use: France - onshore - mainland and Corsica.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

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Center coordinates
2.38 46.23

WGS84 bounds:
-4.87 41.31
9.63 51.14

France - onshore - mainland and Corsica.
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Definition: OGC Well Known Text

GEOGCS["NTF",
    DATUM["Nouvelle_Triangulation_Francaise",
        SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],
        TOWGS84[-168,-60,320,0,0,0,0]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4275"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["NTF",
    DATUM["Nouvelle Triangulation Francaise",
        ELLIPSOID["Clarke 1880 (IGN)",6378249.2,293.466021293627,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
        AXIS["geodetic latitude (Lat)",north,
            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433]],
        AXIS["geodetic longitude (Lon)",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433]],
    USAGE[
        SCOPE["Geodesy."],
        AREA["France - onshore - mainland and Corsica."],
        BBOX[41.31,-4.87,51.14,9.63]],
    ID["EPSG",4275]]

Definition: ESRI Well Known Text

GEOGCS["GCS_NTF",
    DATUM["D_NTF",
        SPHEROID["Clarke_1880_IGN",6378249.2,293.466021293627]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=clrk80ign +towgs84=-168,-60,320,0,0,0,0 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4275","+proj=longlat +ellps=clrk80ign +towgs84=-168,-60,320,0,0,0,0 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "NTF",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Nouvelle Triangulation Francaise",
        "ellipsoid": {
            "name": "Clarke 1880 (IGN)",
            "semi_major_axis": 6378249.2,
            "inverse_flattening": 293.466021293627
        }
    },
    "coordinate_system": {
        "subtype": "ellipsoidal",
        "axis": [
            {
                "name": "Geodetic latitude",
                "abbreviation": "Lat",
                "direction": "north",
                "unit": "degree"
            },
            {
                "name": "Geodetic longitude",
                "abbreviation": "Lon",
                "direction": "east",
                "unit": "degree"
            }
        ]
    },
    "scope": "Geodesy.",
    "area": "France - onshore - mainland and Corsica.",
    "bbox": {
        "south_latitude": 41.31,
        "west_longitude": -4.87,
        "north_latitude": 51.14,
        "east_longitude": 9.63
    },
    "id": {
        "authority": "EPSG",
        "code": 4275
    }
}

Definition: GeoServer

4275=GEOGCS["NTF",DATUM["Nouvelle_Triangulation_Francaise",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-168,-60,320,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4275"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=clrk80ign"
	"towgs84=-168,-60,320,0,0,0,0"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=clrk80ign +towgs84=-168,-60,320,0,0,0,0 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=clrk80ign +towgs84=-168,-60,320,0,0,0,0 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4275, 'EPSG', 4275, '+proj=longlat +ellps=clrk80ign +towgs84=-168,-60,320,0,0,0,0 +no_defs +type=crs', 'GEOGCS["NTF",DATUM["Nouvelle_Triangulation_Francaise",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-168,-60,320,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4275"]]');