EPSG:22291 - Cape / Lo31

Attributes

Unit

metre

Scope

Cadastre, engineering survey, topographic mapping (large and medium scale).

Remarks

None

Area of use

South Africa - onshore between 30°E and 32°E. Eswatini (Swaziland).

Data Source: EPSG v11.016 2024-08-31

Datum: Cape

Coordinate System: cartesian

Projection: South African Survey Grid zone 31

Geodetic CRS: Cape

Export

PROJCRS["Cape / Lo31",
    BASEGEOGCRS["Cape",
        DATUM["Cape",
            ELLIPSOID["Clarke 1880 (Arc)",6378249.145,293.4663077,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4222]],
    CONVERSION["South African Survey Grid zone 31",
        METHOD["Transverse Mercator (South Orientated)",
            ID["EPSG",9808]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",31,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["westing (Y)",west,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["southing (X)",south,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping (large and medium scale)."],
        AREA["South Africa - onshore between 30°E and 32°E. Eswatini (Swaziland)."],
        BBOX[-31.38,29.99,-22.22,32.02]],
    ID["EPSG",22291]]
{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "Cape / Lo31",
  "base_crs": {
    "name": "Cape",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "Cape",
      "ellipsoid": {
        "name": "Clarke 1880 (Arc)",
        "semi_major_axis": 6378249.145,
        "inverse_flattening": 293.4663077
      }
    },
    "coordinate_system": {
      "subtype": "ellipsoidal",
      "axis": [
        {
          "name": "Geodetic latitude",
          "abbreviation": "Lat",
          "direction": "north",
          "unit": "degree"
        },
        {
          "name": "Geodetic longitude",
          "abbreviation": "Lon",
          "direction": "east",
          "unit": "degree"
        }
      ]
    },
    "id": {
      "authority": "EPSG",
      "code": 4222
    }
  },
  "conversion": {
    "name": "South African Survey Grid zone 31",
    "method": {
      "name": "Transverse Mercator (South Orientated)",
      "id": {
        "authority": "EPSG",
        "code": 9808
      }
    },
    "parameters": [
      {
        "name": "Latitude of natural origin",
        "value": 0,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8801
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": 31,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "Scale factor at natural origin",
        "value": 1,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8805
        }
      },
      {
        "name": "False easting",
        "value": 0,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": 0,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8807
        }
      }
    ]
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Westing",
        "abbreviation": "Y",
        "direction": "west",
        "unit": "metre"
      },
      {
        "name": "Southing",
        "abbreviation": "X",
        "direction": "south",
        "unit": "metre"
      }
    ]
  },
  "scope": "Cadastre, engineering survey, topographic mapping (large and medium scale).",
  "area": "South Africa - onshore between 30°E and 32°E. Eswatini (Swaziland).",
  "bbox": {
    "south_latitude": -31.38,
    "west_longitude": 29.99,
    "north_latitude": -22.22,
    "east_longitude": 32.02
  },
  "id": {
    "authority": "EPSG",
    "code": 22291
  }
}
{'crs_wkt': 'PROJCRS["Cape / '
            'Lo31",BASEGEOGCRS["Cape",DATUM["Cape",ELLIPSOID["Clarke 1880 '
            '(Arc)",6378249.145,293.4663077,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4222]],CONVERSION["South '
            'African Survey Grid zone 31",METHOD["Transverse Mercator (South '
            'Orientated)",ID["EPSG",9808]],PARAMETER["Latitude of natural '
            'origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",31,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
            'easting",0,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
            'northing",0,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["westing '
            '(Y)",west,ORDER[1],LENGTHUNIT["metre",1]],AXIS["southing '
            '(X)",south,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Cadastre, '
            'engineering survey, topographic mapping (large and medium '
            'scale)."],AREA["South Africa - onshore between 30°E and 32°E. '
            'Eswatini '
            '(Swaziland)."],BBOX[-31.38,29.99,-22.22,32.02]],ID["EPSG",22291]]'}