EPSG:4681 DEPRECATED

Mauritania 1999

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Mauritania 1999

Datum: Mauritania 1999

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: Woodside

Revision date: 2004-10-14

Scope: Minerals management (including oil and gas exploration and production).

Remarks: Mining title descriptions referring to "Clarke 1880 ellipsoid" should be assumed to be referenced to this CRS. Supersedes all earlier local systems.

Area of use: Mauritania - onshore and offshore.

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

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SimpleMap

Center coordinates
-12.42 21.01

WGS84 bounds:
-20.04 14.72
-4.8 27.3

Mauritania - onshore and offshore.
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Definition: OGC Well Known Text

GEOGCS["Mauritania 1999 (deprecated)",
    DATUM["Mauritania_1999",
        SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,
            AUTHORITY["EPSG","7012"]],
        AUTHORITY["EPSG","6681"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4681"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["Mauritania 1999",
    DATUM["Mauritania 1999",
        ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
            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["Minerals management (including oil and gas exploration and production)."],
        AREA["Mauritania - onshore and offshore."],
        BBOX[14.72,-20.04,27.3,-4.8]],
    ID["EPSG",4681]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Mauritania_1999",
    DATUM["D_Mauritania_1999",
        SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4681","+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "Mauritania 1999",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Mauritania 1999",
        "ellipsoid": {
            "name": "Clarke 1880 (RGS)",
            "semi_major_axis": 6378249.145,
            "inverse_flattening": 293.465
        }
    },
    "coordinate_system": {
        "subtype": "ellipsoidal",
        "axis": [
            {
                "name": "Geodetic latitude",
                "abbreviation": "Lat",
                "direction": "north",
                "unit": "degree"
            },
            {
                "name": "Geodetic longitude",
                "abbreviation": "Lon",
                "direction": "east",
                "unit": "degree"
            }
        ]
    },
    "scope": "Minerals management (including oil and gas exploration and production).",
    "area": "Mauritania - onshore and offshore.",
    "bbox": {
        "south_latitude": 14.72,
        "west_longitude": -20.04,
        "north_latitude": 27.3,
        "east_longitude": -4.8
    },
    "id": {
        "authority": "EPSG",
        "code": 4681
    }
}

Definition: GeoServer

4681=GEOGCS["Mauritania 1999 (deprecated)",DATUM["Mauritania_1999",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6681"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4681"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378249.145"
	"rf=293.465"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4681, 'EPSG', 4681, '+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs', 'GEOGCS["Mauritania 1999 (deprecated)",DATUM["Mauritania_1999",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6681"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4681"]]');