EPSG:4548 — CGCS2000 / 3-degree Gauss-Kruger CM 117E

Projected · China - 115.5°E to 118.5°E onshore

Export Formats

OGC WKT

PROJCS[
    "CGCS2000 / 3-degree Gauss-Kruger CM 117E",
    GEOGCS[
        "China Geodetic Coordinate System 2000",
        DATUM[
            "China_2000",
            SPHEROID["CGCS2000",6378137,298.257222101,AUTHORITY["EPSG","1024"]],
            AUTHORITY["EPSG","1043"]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4490"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",117],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","4548"]
]

WKT2

PROJCRS[
    "CGCS2000 / 3-degree Gauss-Kruger CM 117E",
    BASEGEOGCRS[
        "China Geodetic Coordinate System 2000",
        DATUM[
            "China 2000",
            ELLIPSOID[
                "CGCS2000",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",1024]
            ],
            ID["EPSG",1043]
        ],
        ID["EPSG",4490]
    ],
    CONVERSION[
        "Gauss-Kruger CM 117E",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            117,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            500000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",16320]
    ],
    CS[Cartesian,2,ID["EPSG",4530]],
    AXIS["Northing (X)",north],
    AXIS["Easting (Y)",east],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",4548]
]

PROJ.4

+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4548", "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4548,
  "name": "CGCS2000 / 3-degree Gauss-Kruger CM 117E",
  "kind": "projected",
  "area": "China - 115.5°E to 118.5°E onshore",
  "unit": "metre",
  "bbox": [
    22.6,
    115.5,
    49.88,
    118.5
  ],
  "proj4": "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +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 (4548, 'EPSG', 4548, '+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs +type=crs', 'PROJCS["CGCS2000 / 3-degree Gauss-Kruger CM 117E",GEOGCS["China Geodetic Coordinate System 2000",DATUM["China_2000",SPHEROID["CGCS2000",6378137,298.257222101,AUTHORITY["EPSG","1024"]],AUTHORITY["EPSG","1043"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4490"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",117],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","4548"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=117"
  "+k=1"
  "+x_0=500000"
  "+y_0=0"
  "+ellps=GRS80"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4548=PROJCS["CGCS2000 / 3-degree Gauss-Kruger CM 117E",GEOGCS["China Geodetic Coordinate System 2000",DATUM["China_2000",SPHEROID["CGCS2000",6378137,298.257222101,AUTHORITY["EPSG","1024"]],AUTHORITY["EPSG","1043"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4490"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",117],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","4548"]]

Other CRS using China 2000 (66)

Frequently Asked Questions

How do I add EPSG:4548 to GeoServer?

Add the following definition to your GeoServer configuration:

4548=PROJCS["CGCS2000 / 3-degree Gauss-Kruger CM 117E",GEOGCS["China Geodetic Coordinate System 2000",DATUM["China_2000",SPHEROID["CGCS2000",6378137,298.257222101,AUTHORITY["EPSG","1024"]],AUTHORITY["EPSG","1043"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4490"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",117],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","4548"]]

Read the full GeoServer guide →

How do I add EPSG:4548 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4548, 'EPSG', 4548, '+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs +type=crs', 'PROJCS["CGCS2000 / 3-degree Gauss-Kruger CM 117E",GEOGCS["China Geodetic Coordinate System 2000",DATUM["China_2000",SPHEROID["CGCS2000",6378137,298.257222101,AUTHORITY["EPSG","1024"]],AUTHORITY["EPSG","1043"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4490"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",117],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","4548"]]');

Read the full PostGIS guide →

How do I add EPSG:4548 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=117"
  "+k=1"
  "+x_0=500000"
  "+y_0=0"
  "+ellps=GRS80"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4548 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4548", "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs +type=crs");

Read the full Proj4js guide →