EPSG:4757

SVY21

Transform Get position on a map

Available transformations
to EPSG:4326
No other targets exist for this CRS

  • Singapore - onshore and offshore. , accuracy 1.0 m, code 8886 (default) [3]

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: Considered exact at 1994-01-01 when SVY21 aligned to WGS 84 (Transit).

Information source: Singapore Land Authority, http:/www.sla.gov.sg

Revision date: 2020-03-14

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: SVY21

Datum: SVY21

Ellipsoid: WGS 84

Prime meridian: Greenwich

Data source: EPSG

Information source: Singapore Land Authority, http:/www.sla.gov.sg

Revision date: 2019-01-14

Scope: Geodesy.

Area of use: Singapore - onshore and offshore.

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

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Center coordinates
103.83 1.3

WGS84 bounds:
103.59 1.13
104.07 1.47

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

GEOGCS["SVY21",
    DATUM["SVY21",
        SPHEROID["WGS 84",6378137,298.257223563],
        TOWGS84[0,0,0,0,0,0,0]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4757"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["SVY21",
    DATUM["SVY21",
        ELLIPSOID["WGS 84",6378137,298.257223563,
            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["Singapore - onshore and offshore."],
        BBOX[1.13,103.59,1.47,104.07]],
    ID["EPSG",4757]]

Definition: ESRI Well Known Text

GEOGCS["GCS_SVY21",
    DATUM["D_SVY21",
        SPHEROID["WGS_1984",6378137.0,298.257223563]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4757","+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "SVY21",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "SVY21",
        "ellipsoid": {
            "name": "WGS 84",
            "semi_major_axis": 6378137,
            "inverse_flattening": 298.257223563
        }
    },
    "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": "Singapore - onshore and offshore.",
    "bbox": {
        "south_latitude": 1.13,
        "west_longitude": 103.59,
        "north_latitude": 1.47,
        "east_longitude": 104.07
    },
    "id": {
        "authority": "EPSG",
        "code": 4757
    }
}

Definition: GeoServer

4757=GEOGCS["SVY21",DATUM["SVY21",SPHEROID["WGS 84",6378137,298.257223563],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4757"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=WGS84"
	"towgs84=0,0,0,0,0,0,0"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4757, 'EPSG', 4757, '+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs', 'GEOGCS["SVY21",DATUM["SVY21",SPHEROID["WGS 84",6378137,298.257223563],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4757"]]');