EPSG:CODE

EPSG:4671 — Voirol 1879

Geographic 2D · Algeria - north of 32°N

Export Formats

OGC WKT
GEOGCS[
    "Voirol 1879",
    DATUM[
        "Voirol_1879",
        SPHEROID[
            "Clarke 1880 (IGN)",
            6378249.2,
            293.466021293627,
            AUTHORITY["EPSG","7011"]
        ],
        AUTHORITY["EPSG","6671"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4671"]
]

Other CRS using Voirol 1879

Frequently Asked Questions

How do I add EPSG:4671 to GeoServer?

Add the following definition to your GeoServer configuration: 

4671=GEOGCS["Voirol 1879",DATUM["Voirol_1879",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627,AUTHORITY["EPSG","7011"]],AUTHORITY["EPSG","6671"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4671"]]
Read the full GeoServer guide →

How do I add EPSG:4671 to PostGIS?

Add the following definition to your PostGIS configuration: 

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4671, 'EPSG', 4671, '+proj=longlat +ellps=clrk80ign +no_defs +type=crs', 'GEOGCS["Voirol 1879",DATUM["Voirol_1879",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627,AUTHORITY["EPSG","7011"]],AUTHORITY["EPSG","6671"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4671"]]');
Read the full PostGIS guide →

How do I add EPSG:4671 to MapServer?

Add the following definition to your MapServer configuration: 

PROJECTION
  "+proj=longlat"
  "+ellps=clrk80ign"
  "+no_defs"
  "+type=crs"
END
Read the full MapServer guide →

How do I use EPSG:4671 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:4671", "+proj=longlat +ellps=clrk80ign +no_defs +type=crs");
Read the full Proj4js guide →