EPSG:4175 — Sierra Leone 1968

Geographic 2D · Sierra Leone - onshore

Export Formats

OGC WKT

GEOGCS[
    "Sierra Leone 1968",
    DATUM[
        "Sierra_Leone_1968",
        SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],
        TOWGS84[-88,4,101,0,0,0,0]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4175"]
]

WKT2

GEOGCRS[
    "Sierra Leone 1968",
    DATUM[
        "Sierra Leone 1968",
        ELLIPSOID[
            "Clarke 1880 (RGS)",
            6378249.145,
            293.465,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7012]
        ],
        ID["EPSG",6175]
    ],
    CS[ellipsoidal,2,ID["EPSG",6422]],
    AXIS["Geodetic latitude (Lat)",north],
    AXIS["Geodetic longitude (Lon)",east],
    ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
    ID["EPSG",4175]
]

PROJ.4

+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-88,4,101,0,0,0,0 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4175", "+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-88,4,101,0,0,0,0 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4175,
  "name": "Sierra Leone 1968",
  "kind": "geographic 2D",
  "area": "Sierra Leone - onshore",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    6.88,
    -13.35,
    10,
    -10.26
  ],
  "proj4": "+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-88,4,101,0,0,0,0 +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4175, 'EPSG', 4175, '+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-88,4,101,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Sierra Leone 1968",DATUM["Sierra_Leone_1968",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-88,4,101,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4175"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+a=6378249.145"
  "+rf=293.465"
  "+towgs84=-88,4,101,0,0,0,0"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4175=GEOGCS["Sierra Leone 1968",DATUM["Sierra_Leone_1968",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-88,4,101,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4175"]]

Related Coordinate Systems

Available Transformations (1)

Transformation	Source → Target	Accuracy (m)
Sierra Leone 1968 to WGS 84 (1)	4175 → 4326	26

Other CRS using Sierra Leone 1968

Frequently Asked Questions

How do I add EPSG:4175 to GeoServer?

Add the following definition to your GeoServer configuration:

4175=GEOGCS["Sierra Leone 1968",DATUM["Sierra_Leone_1968",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-88,4,101,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4175"]]

Read the full GeoServer guide →

How do I add EPSG:4175 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4175, 'EPSG', 4175, '+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-88,4,101,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Sierra Leone 1968",DATUM["Sierra_Leone_1968",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-88,4,101,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4175"]]');

Read the full PostGIS guide →

How do I add EPSG:4175 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+a=6378249.145"
  "+rf=293.465"
  "+towgs84=-88,4,101,0,0,0,0"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4175 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4175", "+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-88,4,101,0,0,0,0 +no_defs +type=crs");

Read the full Proj4js guide →