EPSG:19904

Ghana Metre Grid

Attributes

Data source: EPSG

Information source: Ordnance Survey International

Revision date: 1995-12-02

Scope: Engineering survey, topographic mapping.

Remarks: Replaces Ghana National Grid (code 19959) from 1978. British foot (Sears 1922) used to convert projection defining parameters.

Method: Transverse Mercator

Area of use: Ghana - onshore and offshore.

Description: (0,)

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Ghana - onshore and offshore.

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Definition: OGC Well Known Text

PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",4.66666666666667],
PARAMETER["central_meridian",-1],
PARAMETER["scale_factor",0.99975],
PARAMETER["false_easting",274319.51],
PARAMETER["false_northing",0]

Definition: OGC Well Known Text 2 (2019)

CONVERSION["Ghana Metre Grid",
    METHOD["Transverse Mercator",
        ID["EPSG",9807]],
    PARAMETER["Latitude of natural origin",4.66666666666667,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8801]],
    PARAMETER["Longitude of natural origin",-1,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8802]],
    PARAMETER["Scale factor at natural origin",0.99975,
        SCALEUNIT["unity",1],
        ID["EPSG",8805]],
    PARAMETER["False easting",274319.51,
        LENGTHUNIT["metre",1],
        ID["EPSG",8806]],
    PARAMETER["False northing",0,
        LENGTHUNIT["metre",1],
        ID["EPSG",8807]],
    ID["EPSG",19904]]

Definition: ESRI Well Known Text

PROJECTION["Transverse_Mercator"],
PARAMETER["False_Easting",274319.51],
PARAMETER["False_Northing",0.0],
PARAMETER["Central_Meridian",-1.0],
PARAMETER["Scale_Factor",0.99975],
PARAMETER["Latitude_Of_Origin",4.66666666666667]

Definition: PROJ.4

+proj=tmerc +lat_0=4.66666666666667 +lon_0=-1 +k=0.99975 +x_0=274319.51 +y_0=0

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:19904","+proj=tmerc +lat_0=4.66666666666667 +lon_0=-1 +k=0.99975 +x_0=274319.51 +y_0=0");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Conversion",
    "name": "Ghana Metre Grid",
    "method": {
        "name": "Transverse Mercator",
        "id": {
            "authority": "EPSG",
            "code": 9807
        }
    },
    "parameters": [
        {
            "name": "Latitude of natural origin",
            "value": 4.66666666666667,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8801
            }
        },
        {
            "name": "Longitude of natural origin",
            "value": -1,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8802
            }
        },
        {
            "name": "Scale factor at natural origin",
            "value": 0.99975,
            "unit": "unity",
            "id": {
                "authority": "EPSG",
                "code": 8805
            }
        },
        {
            "name": "False easting",
            "value": 274319.51,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8806
            }
        },
        {
            "name": "False northing",
            "value": 0,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8807
            }
        }
    ],
    "id": {
        "authority": "EPSG",
        "code": 19904
    }
}

Definition: GeoServer

19904=PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",4.66666666666667],PARAMETER["central_meridian",-1],PARAMETER["scale_factor",0.99975],PARAMETER["false_easting",274319.51],PARAMETER["false_northing",0]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=4.66666666666667"
	"lon_0=-1"
	"k=0.99975"
	"x_0=274319.51"
	"y_0=0"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=4.66666666666667 +lon_0=-1 +k=0.99975 +x_0=274319.51 +y_0=0">
	<Layer srs="+proj=tmerc +lat_0=4.66666666666667 +lon_0=-1 +k=0.99975 +x_0=274319.51 +y_0=0">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 19904, 'EPSG', 19904, '+proj=tmerc +lat_0=4.66666666666667 +lon_0=-1 +k=0.99975 +x_0=274319.51 +y_0=0', 'PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",4.66666666666667],PARAMETER["central_meridian",-1],PARAMETER["scale_factor",0.99975],PARAMETER["false_easting",274319.51],PARAMETER["false_northing",0]');