EPSG:4155 — Dabola 1981

Geographic 2D · Guinea - onshore

Export Formats

OGC WKT

GEOGCS[
    "Dabola 1981",
    DATUM[
        "Dabola_1981",
        SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],
        TOWGS84[-83,37,124,0,0,0,0]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4155"]
]

WKT2

GEOGCRS[
    "Dabola 1981",
    DATUM[
        "Dabola 1981",
        ELLIPSOID[
            "Clarke 1880 (IGN)",
            6378249.2,
            293.466021293627,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7011]
        ],
        ID["EPSG",6155]
    ],
    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",4155]
]

PROJ.4

+proj=longlat +ellps=clrk80ign +towgs84=-83,37,124,0,0,0,0 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4155", "+proj=longlat +ellps=clrk80ign +towgs84=-83,37,124,0,0,0,0 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4155,
  "name": "Dabola 1981",
  "kind": "geographic 2D",
  "area": "Guinea - onshore",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    7.19,
    -15.13,
    12.68,
    -7.65
  ],
  "proj4": "+proj=longlat +ellps=clrk80ign +towgs84=-83,37,124,0,0,0,0 +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 (4155, 'EPSG', 4155, '+proj=longlat +ellps=clrk80ign +towgs84=-83,37,124,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Dabola 1981",DATUM["Dabola_1981",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-83,37,124,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4155"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+ellps=clrk80ign"
  "+towgs84=-83,37,124,0,0,0,0"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4155=GEOGCS["Dabola 1981",DATUM["Dabola_1981",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-83,37,124,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4155"]]

Related Coordinate Systems

Available Transformations (1)

Transformation	Source → Target	Accuracy (m)
Dabola 1981 to WGS 84 (1)	4155 → 4326	25

Other CRS using Dabola 1981

Frequently Asked Questions

How do I add EPSG:4155 to GeoServer?

Add the following definition to your GeoServer configuration:

4155=GEOGCS["Dabola 1981",DATUM["Dabola_1981",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-83,37,124,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4155"]]

Read the full GeoServer guide →

How do I add EPSG:4155 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4155, 'EPSG', 4155, '+proj=longlat +ellps=clrk80ign +towgs84=-83,37,124,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Dabola 1981",DATUM["Dabola_1981",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-83,37,124,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4155"]]');

Read the full PostGIS guide →

How do I add EPSG:4155 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+ellps=clrk80ign"
  "+towgs84=-83,37,124,0,0,0,0"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4155 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4155", "+proj=longlat +ellps=clrk80ign +towgs84=-83,37,124,0,0,0,0 +no_defs +type=crs");

Read the full Proj4js guide →