EPSG:4677 — Lao 1993

Geographic 2D · Laos

Export Formats

OGC WKT

GEOGCS[
    "Lao 1993",
    DATUM[
        "Lao_1993",
        SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],
        AUTHORITY["EPSG","6677"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4677"]
]

WKT2

GEOGCRS[
    "Lao 1993",
    DATUM[
        "Lao 1993",
        ELLIPSOID[
            "Krassowsky 1940",
            6378245,
            298.3,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7024]
        ],
        ID["EPSG",6677]
    ],
    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",4677]
]

PROJ.4

+proj=longlat +ellps=krass +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4677", "+proj=longlat +ellps=krass +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4677,
  "name": "Lao 1993",
  "kind": "geographic 2D",
  "area": "Laos",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    13.92,
    100.09,
    22.5,
    107.64
  ],
  "proj4": "+proj=longlat +ellps=krass +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 (4677, 'EPSG', 4677, '+proj=longlat +ellps=krass +no_defs +type=crs', 'GEOGCS["Lao 1993",DATUM["Lao_1993",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],AUTHORITY["EPSG","6677"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4677"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+ellps=krass"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4677=GEOGCS["Lao 1993",DATUM["Lao_1993",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],AUTHORITY["EPSG","6677"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4677"]]

Related Coordinate Systems

Available Transformations (2)

Transformation	Source → Target	Accuracy (m)
Lao 1993 to Lao 1997 (1)	4677 → 4678	0.15
Lao 1993 to WGS 84 (1)	4677 → 4326	6

Other CRS for LA

Other CRS using Lao 1993

Frequently Asked Questions

How do I add EPSG:4677 to GeoServer?

Add the following definition to your GeoServer configuration:

4677=GEOGCS["Lao 1993",DATUM["Lao_1993",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],AUTHORITY["EPSG","6677"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4677"]]

Read the full GeoServer guide →

How do I add EPSG:4677 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4677, 'EPSG', 4677, '+proj=longlat +ellps=krass +no_defs +type=crs', 'GEOGCS["Lao 1993",DATUM["Lao_1993",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],AUTHORITY["EPSG","6677"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4677"]]');

Read the full PostGIS guide →

How do I add EPSG:4677 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+ellps=krass"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4677 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4677", "+proj=longlat +ellps=krass +no_defs +type=crs");

Read the full Proj4js guide →