EPSG:21421 — Beijing 1954 / Gauss-Kruger zone 21

Projekte · China - 120°E to 126°E onshore

Tanım Formatları

OGC WKT

PROJCS[
    "Beijing 1954 / Gauss-Kruger zone 21",
    GEOGCS[
        "Beijing 1954",
        DATUM[
            "Beijing_1954",
            SPHEROID["Krassowsky 1940",6378245,298.3],
            TOWGS84[15.8,-154.4,-82.3,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4214"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",123],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",21500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","21421"]
]

WKT2

PROJCRS[
    "Beijing 1954 / Gauss-Kruger zone 21",
    BASEGEOGCRS[
        "Beijing 1954",
        DATUM[
            "Beijing 1954",
            ELLIPSOID[
                "Krassowsky 1940",
                6378245,
                298.3,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7024]
            ],
            ID["EPSG",6214]
        ],
        ID["EPSG",4214]
    ],
    CONVERSION[
        "6-degree Gauss-Kruger zone 21",
        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",
            123,
            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",
            21500000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",16221]
    ],
    CS[Cartesian,2,ID["EPSG",4530]],
    AXIS["Northing (X)",north],
    AXIS["Easting (Y)",east],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",21421]
]

PROJ.4

+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=21500000 +y_0=0 +ellps=krass +towgs84=15.8,-154.4,-82.3,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

Proj4js'a nasıl projeksiyon eklerim? →

proj4.defs("EPSG:21421", "+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=21500000 +y_0=0 +ellps=krass +towgs84=15.8,-154.4,-82.3,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 21421,
  "name": "Beijing 1954 / Gauss-Kruger zone 21",
  "kind": "projected",
  "area": "China - 120°E to 126°E onshore",
  "unit": "metre",
  "bbox": [
    26.34,
    120,
    53.56,
    126
  ],
  "proj4": "+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=21500000 +y_0=0 +ellps=krass +towgs84=15.8,-154.4,-82.3,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

PostGIS'a nasıl projeksiyon eklerim? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (21421, 'EPSG', 21421, '+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=21500000 +y_0=0 +ellps=krass +towgs84=15.8,-154.4,-82.3,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["Beijing 1954 / Gauss-Kruger zone 21",GEOGCS["Beijing 1954",DATUM["Beijing_1954",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[15.8,-154.4,-82.3,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4214"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",123],PARAMETER["scale_factor",1],PARAMETER["false_easting",21500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","21421"]]');

MapServer

MapServer'a nasıl projeksiyon eklerim? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=123"
  "+k=1"
  "+x_0=21500000"
  "+y_0=0"
  "+ellps=krass"
  "+towgs84=15.8,-154.4,-82.3,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

GeoServer'a nasıl projeksiyon eklerim? →

21421=PROJCS["Beijing 1954 / Gauss-Kruger zone 21",GEOGCS["Beijing 1954",DATUM["Beijing_1954",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[15.8,-154.4,-82.3,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4214"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",123],PARAMETER["scale_factor",1],PARAMETER["false_easting",21500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","21421"]]

İlişkili Koordinat Sistemleri

Mevcut Dönüşümler (6)

Dönüşümler temel CRS'den alınmıştır: EPSG:4214 (Beijing 1954)

Dönüşüm	Kaynak → Hedef	Hassasiyet (m)
Beijing 1954 to WGS 84 (1)	4214 → 4326	1
Beijing 1954 to WGS 84 (4)	4214 → 4326	1
Beijing 1954 to WGS 84 (6)	4214 → 4326	1
Beijing 1954 to WGS 84 (5)	4214 → 4326	10
Beijing 1954 to WGS 84 (2)	4214 → 4326	15
Beijing 1954 to WGS 84 (3)	4214 → 4326	15

Beijing 1954 Kullanan Diğer CRS (64)

Sıkça Sorulan Sorular

EPSG:21421 projeksiyonunu GeoServer'a nasıl eklerim?

Aşağıdaki tanımı GeoServer yapılandırma dosyanıza ekleyin:

21421=PROJCS["Beijing 1954 / Gauss-Kruger zone 21",GEOGCS["Beijing 1954",DATUM["Beijing_1954",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[15.8,-154.4,-82.3,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4214"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",123],PARAMETER["scale_factor",1],PARAMETER["false_easting",21500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","21421"]]

GeoServer rehberinin tamamını okuyun →

EPSG:21421 projeksiyonunu PostGIS'e nasıl eklerim?

Aşağıdaki tanımı PostGIS yapılandırma dosyanıza ekleyin:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (21421, 'EPSG', 21421, '+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=21500000 +y_0=0 +ellps=krass +towgs84=15.8,-154.4,-82.3,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["Beijing 1954 / Gauss-Kruger zone 21",GEOGCS["Beijing 1954",DATUM["Beijing_1954",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[15.8,-154.4,-82.3,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4214"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",123],PARAMETER["scale_factor",1],PARAMETER["false_easting",21500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","21421"]]');

PostGIS rehberinin tamamını okuyun →

EPSG:21421 projeksiyonunu MapServer'da nasıl kullanırım?

Aşağıdaki tanımı MapServer yapılandırma dosyanıza ekleyin:

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=123"
  "+k=1"
  "+x_0=21500000"
  "+y_0=0"
  "+ellps=krass"
  "+towgs84=15.8,-154.4,-82.3,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

MapServer rehberinin tamamını okuyun →

EPSG:21421 projeksiyonunu Proj4js ile nasıl kullanırım?

Aşağıdaki tanımı Proj4js yapılandırma dosyanıza ekleyin:

proj4.defs("EPSG:21421", "+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=21500000 +y_0=0 +ellps=krass +towgs84=15.8,-154.4,-82.3,0,0,0,0 +units=m +no_defs +type=crs");

Proj4js rehberinin tamamını okuyun →

Tür

Projekte

Birim

metre

Geodetik CRS

Beijing 1954

Datum

Beijing 1954

Elipsoid

Krassowsky 1940

Başlangıç Meridyeni

Greenwich

Kullanım Alanı

China - 120°E to 126°E onshore

China - onshore between 120°E and 126°E.

Koordinat Sistemi

Cartesian 2D CS. Axes: northing, easting (X,Y). Orientations: north, east. UoM: m.

Merkez Koordinatları

21499929.16 4424027.32

Projekte Sınırlar

5941170.90 21200364.7521698697.25 2918047.43

WGS84 Sınırları

53.56 120.00126.00 26.34

Veri Kaynağı

EPSG

Revizyon Tarihi

2002-06-22

Kapsam

Topographic mapping (medium scale).

Açıklamalar

Also found with truncated false easting - see Beijing 1954 / Gauss-Kruger CM 123E (code 24161). Replaced by Xian 1980 / Gauss-Kruger zone 21 (code 2335).

EPSG

21421