EPSG:22281 — Cape / Lo21

Projekte · South Africa - 20°E to 22°E

Tanım Formatları

OGC WKT

PROJCS[
    "Cape / Lo21",
    GEOGCS[
        "Cape",
        DATUM[
            "Cape",
            SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],
            TOWGS84[-136,-108,-292,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4222"]
    ],
    PROJECTION["Transverse_Mercator_South_Orientated"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",21],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","22281"]
]

WKT2

PROJCRS[
    "Cape / Lo21",
    BASEGEOGCRS[
        "Cape",
        DATUM[
            "Cape",
            ELLIPSOID[
                "Clarke 1880 (Arc)",
                6378249.145,
                293.4663077,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7013]
            ],
            ID["EPSG",6222]
        ],
        ID["EPSG",4222]
    ],
    CONVERSION[
        "South African Survey Grid zone 21",
        METHOD["Transverse Mercator (South Orientated)",ID["EPSG",9808]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            21,
            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",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",17521]
    ],
    CS[Cartesian,2,ID["EPSG",6503]],
    AXIS["Westing (Y)",west],
    AXIS["Southing (X)",south],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",22281]
]

PROJ.4

+proj=tmerc +axis=wsu +lat_0=0 +lon_0=21 +k=1 +x_0=0 +y_0=0 +a=6378249.145 +rf=293.4663077 +towgs84=-136,-108,-292,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

Proj4js'a nasıl projeksiyon eklerim? →

proj4.defs("EPSG:22281", "+proj=tmerc +axis=wsu +lat_0=0 +lon_0=21 +k=1 +x_0=0 +y_0=0 +a=6378249.145 +rf=293.4663077 +towgs84=-136,-108,-292,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 22281,
  "name": "Cape / Lo21",
  "kind": "projected",
  "area": "South Africa - 20°E to 22°E",
  "unit": "metre",
  "bbox": [
    -34.88,
    19.99,
    -24.76,
    22.01
  ],
  "proj4": "+proj=tmerc +axis=wsu +lat_0=0 +lon_0=21 +k=1 +x_0=0 +y_0=0 +a=6378249.145 +rf=293.4663077 +towgs84=-136,-108,-292,0,0,0,0 +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 (22281, 'EPSG', 22281, '+proj=tmerc +axis=wsu +lat_0=0 +lon_0=21 +k=1 +x_0=0 +y_0=0 +a=6378249.145 +rf=293.4663077 +towgs84=-136,-108,-292,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["Cape / Lo21",GEOGCS["Cape",DATUM["Cape",SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],TOWGS84[-136,-108,-292,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4222"]],PROJECTION["Transverse_Mercator_South_Orientated"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",21],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","22281"]]');

MapServer

MapServer'a nasıl projeksiyon eklerim? →

PROJECTION
  "+proj=tmerc"
  "+axis=wsu"
  "+lat_0=0"
  "+lon_0=21"
  "+k=1"
  "+x_0=0"
  "+y_0=0"
  "+a=6378249.145"
  "+rf=293.4663077"
  "+towgs84=-136,-108,-292,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

GeoServer'a nasıl projeksiyon eklerim? →

22281=PROJCS["Cape / Lo21",GEOGCS["Cape",DATUM["Cape",SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],TOWGS84[-136,-108,-292,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4222"]],PROJECTION["Transverse_Mercator_South_Orientated"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",21],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","22281"]]

İlişkili Koordinat Sistemleri

Mevcut Dönüşümler (3)

Dönüşümler temel CRS'den alınmıştır: EPSG:4222 (Cape)

Dönüşüm	Kaynak → Hedef	Hassasiyet (m)
Cape to WGS 84 (1)	4222 → 4326	9
Cape to WGS 84 (2)	4222 → 4326	15
Cape to Hartebeesthoek94 (1)	4222 → 4148	15

Cape Kullanan Diğer CRS

Sıkça Sorulan Sorular

EPSG:22281 projeksiyonunu GeoServer'a nasıl eklerim?

Aşağıdaki tanımı GeoServer yapılandırma dosyanıza ekleyin:

22281=PROJCS["Cape / Lo21",GEOGCS["Cape",DATUM["Cape",SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],TOWGS84[-136,-108,-292,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4222"]],PROJECTION["Transverse_Mercator_South_Orientated"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",21],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","22281"]]

GeoServer rehberinin tamamını okuyun →

EPSG:22281 projeksiyonunu PostGIS'e nasıl eklerim?

Aşağıdaki tanımı PostGIS yapılandırma dosyanıza ekleyin:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (22281, 'EPSG', 22281, '+proj=tmerc +axis=wsu +lat_0=0 +lon_0=21 +k=1 +x_0=0 +y_0=0 +a=6378249.145 +rf=293.4663077 +towgs84=-136,-108,-292,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["Cape / Lo21",GEOGCS["Cape",DATUM["Cape",SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],TOWGS84[-136,-108,-292,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4222"]],PROJECTION["Transverse_Mercator_South_Orientated"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",21],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","22281"]]');

PostGIS rehberinin tamamını okuyun →

EPSG:22281 projeksiyonunu MapServer'da nasıl kullanırım?

Aşağıdaki tanımı MapServer yapılandırma dosyanıza ekleyin:

PROJECTION
  "+proj=tmerc"
  "+axis=wsu"
  "+lat_0=0"
  "+lon_0=21"
  "+k=1"
  "+x_0=0"
  "+y_0=0"
  "+a=6378249.145"
  "+rf=293.4663077"
  "+towgs84=-136,-108,-292,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

MapServer rehberinin tamamını okuyun →

EPSG:22281 projeksiyonunu Proj4js ile nasıl kullanırım?

Aşağıdaki tanımı Proj4js yapılandırma dosyanıza ekleyin:

proj4.defs("EPSG:22281", "+proj=tmerc +axis=wsu +lat_0=0 +lon_0=21 +k=1 +x_0=0 +y_0=0 +a=6378249.145 +rf=293.4663077 +towgs84=-136,-108,-292,0,0,0,0 +units=m +no_defs +type=crs");

Proj4js rehberinin tamamını okuyun →