EPSG:4157 — Mount Dillon

Geographic 2D · Trinidad and Tobago - Tobago - onshore

Export Formats

OGC WKT

GEOGCS[
    "Mount Dillon",
    DATUM[
        "Mount_Dillon",
        SPHEROID[
            "Clarke 1858",
            6378293.64520876,
            294.260676369261,
            AUTHORITY["EPSG","7007"]
        ],
        AUTHORITY["EPSG","6157"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4157"]
]

WKT2

GEOGCRS[
    "Mount Dillon",
    DATUM[
        "Mount Dillon",
        ELLIPSOID[
            "Clarke 1858",
            20926348,
            294.260676369261,
            LENGTHUNIT["Clarke's foot",0.3047972654,ID["EPSG",9005]],
            ID["EPSG",7007]
        ],
        ID["EPSG",6157]
    ],
    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",4157]
]

PROJ.4

+proj=longlat +a=6378293.64520876 +b=6356617.98767984 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4157", "+proj=longlat +a=6378293.64520876 +b=6356617.98767984 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4157,
  "name": "Mount Dillon",
  "kind": "geographic 2D",
  "area": "Trinidad and Tobago - Tobago - onshore",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    11.08,
    -60.9,
    11.41,
    -60.44
  ],
  "proj4": "+proj=longlat +a=6378293.64520876 +b=6356617.98767984 +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 (4157, 'EPSG', 4157, '+proj=longlat +a=6378293.64520876 +b=6356617.98767984 +no_defs +type=crs', 'GEOGCS["Mount Dillon",DATUM["Mount_Dillon",SPHEROID["Clarke 1858",6378293.64520876,294.260676369261,AUTHORITY["EPSG","7007"]],AUTHORITY["EPSG","6157"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4157"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+a=6378293.64520876"
  "+b=6356617.98767984"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4157=GEOGCS["Mount Dillon",DATUM["Mount_Dillon",SPHEROID["Clarke 1858",6378293.64520876,294.260676369261,AUTHORITY["EPSG","7007"]],AUTHORITY["EPSG","6157"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4157"]]

Other CRS using Mount Dillon

Frequently Asked Questions

How do I add EPSG:4157 to GeoServer?

Add the following definition to your GeoServer configuration:

4157=GEOGCS["Mount Dillon",DATUM["Mount_Dillon",SPHEROID["Clarke 1858",6378293.64520876,294.260676369261,AUTHORITY["EPSG","7007"]],AUTHORITY["EPSG","6157"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4157"]]

Read the full GeoServer guide →

How do I add EPSG:4157 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4157, 'EPSG', 4157, '+proj=longlat +a=6378293.64520876 +b=6356617.98767984 +no_defs +type=crs', 'GEOGCS["Mount Dillon",DATUM["Mount_Dillon",SPHEROID["Clarke 1858",6378293.64520876,294.260676369261,AUTHORITY["EPSG","7007"]],AUTHORITY["EPSG","6157"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4157"]]');

Read the full PostGIS guide →

How do I add EPSG:4157 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+a=6378293.64520876"
  "+b=6356617.98767984"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4157 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4157", "+proj=longlat +a=6378293.64520876 +b=6356617.98767984 +no_defs +type=crs");

Read the full Proj4js guide →