EPSG:11446

NGFA 2022 height

Attributes

Unit: metre

Geodetic CRS: NGFA 2022 height

Datum: Nivellement General de Futuna et d’Alofi 2022

Data source: EPSG

Information source: IGN report "Définition du système altimétrique NGFA 2022 (FUTUNA ALOFI)", Institut National de l'Information Géographique et Forestière (IGN), France.

Revision date: 2026-03-18

Scope: Geodesy, engineering survey, topographic mapping.

Remarks: Replaces NGWF Futuna (MOP 1996) height.

Area of use: Wallis and Futuna - Futuna and Alofi - onshore.

Coordinate system: Vertical CS. Axis: height (H). Orientation: up. UoM: m.

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
-14.3 -178.09

Projected bounds:
-14.42 -178.24
-14.18 -177.94

WGS84 bounds:
-178.24 -14.42
-177.94 -14.18

Wallis and Futuna - Futuna and Alofi - onshore.
MapTiler banner

Definition: OGC Well Known Text

VERT_CS["NGFA 2022 height",
    VERT_DATUM["Nivellement General de Futuna et d’Alofi 2022",2005,
        AUTHORITY["EPSG","1455"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Gravity-related height",UP],
    AUTHORITY["EPSG","11446"]]

Definition: OGC Well Known Text 2 (2019)

VERTCRS["NGFA 2022 height",
    VDATUM["Nivellement General de Futuna et d’Alofi 2022"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Wallis and Futuna - Futuna and Alofi - onshore."],
        BBOX[-14.42,-178.24,-14.18,-177.94]],
    ID["EPSG",11446]]

Definition: ESRI Well Known Text

VERTCS["NGFA_2022_height",
    VDATUM["Nivellement_General_de_Futuna_et_d_Alofi_2022"],
    PARAMETER["Vertical_Shift",0.0],
    PARAMETER["Direction",1.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+vunits=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:11446","+vunits=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "VerticalCRS",
    "name": "NGFA 2022 height",
    "datum": {
        "type": "VerticalReferenceFrame",
        "name": "Nivellement General de Futuna et d’Alofi 2022"
    },
    "coordinate_system": {
        "subtype": "vertical",
        "axis": [
            {
                "name": "Gravity-related height",
                "abbreviation": "H",
                "direction": "up",
                "unit": "metre"
            }
        ]
    },
    "scope": "Geodesy, engineering survey, topographic mapping.",
    "area": "Wallis and Futuna - Futuna and Alofi - onshore.",
    "bbox": {
        "south_latitude": -14.42,
        "west_longitude": -178.24,
        "north_latitude": -14.18,
        "east_longitude": -177.94
    },
    "id": {
        "authority": "EPSG",
        "code": 11446
    }
}

Definition: GeoServer

11446=VERT_CS["NGFA 2022 height",VERT_DATUM["Nivellement General de Futuna et d’Alofi 2022",2005,AUTHORITY["EPSG","1455"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","11446"]]

Definition: MapServer - MAPfile

PROJECTION
	"vunits=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+vunits=m +no_defs +type=crs">
	<Layer srs="+vunits=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11446, 'EPSG', 11446, '+vunits=m +no_defs +type=crs', 'VERT_CS["NGFA 2022 height",VERT_DATUM["Nivellement General de Futuna et d’Alofi 2022",2005,AUTHORITY["EPSG","1455"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","11446"]]');