EPSG:4657 — Reykjavik 1900

Geographic 2D · Iceland - mainland

Export Formats

OGC WKT

GEOGCS[
    "Reykjavik 1900",
    DATUM[
        "Reykjavik_1900",
        SPHEROID["Danish 1876",6377019.27,300],
        TOWGS84[-28,199,5,0,0,0,0]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4657"]
]

WKT2

GEOGCRS[
    "Reykjavik 1900",
    DATUM[
        "Reykjavik 1900",
        ELLIPSOID[
            "Danish 1876",
            6377019.27,
            300,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7051]
        ],
        ID["EPSG",6657]
    ],
    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",4657]
]

PROJ.4

+proj=longlat +a=6377019.27 +rf=300 +towgs84=-28,199,5,0,0,0,0 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4657", "+proj=longlat +a=6377019.27 +rf=300 +towgs84=-28,199,5,0,0,0,0 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4657,
  "name": "Reykjavik 1900",
  "kind": "geographic 2D",
  "area": "Iceland - mainland",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    63.34,
    -24.63,
    66.59,
    -13.38
  ],
  "proj4": "+proj=longlat +a=6377019.27 +rf=300 +towgs84=-28,199,5,0,0,0,0 +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 (4657, 'EPSG', 4657, '+proj=longlat +a=6377019.27 +rf=300 +towgs84=-28,199,5,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Reykjavik 1900",DATUM["Reykjavik_1900",SPHEROID["Danish 1876",6377019.27,300],TOWGS84[-28,199,5,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4657"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+a=6377019.27"
  "+rf=300"
  "+towgs84=-28,199,5,0,0,0,0"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4657=GEOGCS["Reykjavik 1900",DATUM["Reykjavik_1900",SPHEROID["Danish 1876",6377019.27,300],TOWGS84[-28,199,5,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4657"]]

Related Coordinate Systems

Available Transformations (1)

Transformation	Source → Target	Accuracy (m)
Reykjavik 1900 to WGS 84 (1)	4657 → 4326	10

Other CRS using Reykjavik 1900

Frequently Asked Questions

How do I add EPSG:4657 to GeoServer?

Add the following definition to your GeoServer configuration:

4657=GEOGCS["Reykjavik 1900",DATUM["Reykjavik_1900",SPHEROID["Danish 1876",6377019.27,300],TOWGS84[-28,199,5,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4657"]]

Read the full GeoServer guide →

How do I add EPSG:4657 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4657, 'EPSG', 4657, '+proj=longlat +a=6377019.27 +rf=300 +towgs84=-28,199,5,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Reykjavik 1900",DATUM["Reykjavik_1900",SPHEROID["Danish 1876",6377019.27,300],TOWGS84[-28,199,5,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4657"]]');

Read the full PostGIS guide →

How do I add EPSG:4657 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+a=6377019.27"
  "+rf=300"
  "+towgs84=-28,199,5,0,0,0,0"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4657 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4657", "+proj=longlat +a=6377019.27 +rf=300 +towgs84=-28,199,5,0,0,0,0 +no_defs +type=crs");

Read the full Proj4js guide →