metre
Engineering survey, topographic mapping.
None
Finland - between 28°30'E and 31°30'E.
Data Source: EPSG v11.016 2024-08-31
Datum: Kartastokoordinaattijarjestelma (1966)
Coordinate System: cartesian
Projection: Finland zone 4
Geodetic CRS: KKJ
PROJCRS["KKJ / Finland zone 4",
BASEGEOGCRS["KKJ",
DATUM["Kartastokoordinaattijarjestelma (1966)",
ELLIPSOID["International 1924",6378388,297,
LENGTHUNIT["metre",1]]],
PRIMEM["Greenwich",0,
ANGLEUNIT["degree",0.0174532925199433]],
ID["EPSG",4123]],
CONVERSION["Finland zone 4",
METHOD["Transverse Mercator",
ID["EPSG",9807]],
PARAMETER["Latitude of natural origin",0,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8801]],
PARAMETER["Longitude of natural origin",30,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8802]],
PARAMETER["Scale factor at natural origin",1,
SCALEUNIT["unity",1],
ID["EPSG",8805]],
PARAMETER["False easting",4500000,
LENGTHUNIT["metre",1],
ID["EPSG",8806]],
PARAMETER["False northing",0,
LENGTHUNIT["metre",1],
ID["EPSG",8807]]],
CS[Cartesian,2],
AXIS["northing (X)",north,
ORDER[1],
LENGTHUNIT["metre",1]],
AXIS["easting (Y)",east,
ORDER[2],
LENGTHUNIT["metre",1]],
USAGE[
SCOPE["Engineering survey, topographic mapping."],
AREA["Finland - between 28°30'E and 31°30'E."],
BBOX[60.94,28.5,69.81,31.5]],
ID["EPSG",2394]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "ProjectedCRS",
"name": "KKJ / Finland zone 4",
"base_crs": {
"name": "KKJ",
"datum": {
"type": "GeodeticReferenceFrame",
"name": "Kartastokoordinaattijarjestelma (1966)",
"ellipsoid": {
"name": "International 1924",
"semi_major_axis": 6378388,
"inverse_flattening": 297
}
},
"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": 4123
}
},
"conversion": {
"name": "Finland zone 4",
"method": {
"name": "Transverse Mercator",
"id": {
"authority": "EPSG",
"code": 9807
}
},
"parameters": [
{
"name": "Latitude of natural origin",
"value": 0,
"unit": "degree",
"id": {
"authority": "EPSG",
"code": 8801
}
},
{
"name": "Longitude of natural origin",
"value": 30,
"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": 4500000,
"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": "Northing",
"abbreviation": "X",
"direction": "north",
"unit": "metre"
},
{
"name": "Easting",
"abbreviation": "Y",
"direction": "east",
"unit": "metre"
}
]
},
"scope": "Engineering survey, topographic mapping.",
"area": "Finland - between 28°30'E and 31°30'E.",
"bbox": {
"south_latitude": 60.94,
"west_longitude": 28.5,
"north_latitude": 69.81,
"east_longitude": 31.5
},
"id": {
"authority": "EPSG",
"code": 2394
}
}
{'crs_wkt': 'PROJCRS["KKJ / Finland zone '
'4",BASEGEOGCRS["KKJ",DATUM["Kartastokoordinaattijarjestelma '
'(1966)",ELLIPSOID["International '
'1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4123]],CONVERSION["Finland '
'zone 4",METHOD["Transverse '
'Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural '
'origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
'of natural '
'origin",30,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
'factor at natural '
'origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
'easting",4500000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
'northing",0,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["northing '
'(X)",north,ORDER[1],LENGTHUNIT["metre",1]],AXIS["easting '
'(Y)",east,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Engineering '
'survey, topographic mapping."],AREA["Finland - between 28°30\'E '
'and 31°30\'E."],BBOX[60.94,28.5,69.81,31.5]],ID["EPSG",2394]]',
'false_easting': 4500000.0,
'false_northing': 0.0,
'geographic_crs_name': 'KKJ',
'grid_mapping_name': 'transverse_mercator',
'horizontal_datum_name': 'Kartastokoordinaattijarjestelma (1966)',
'inverse_flattening': 297.0,
'latitude_of_projection_origin': 0.0,
'longitude_of_central_meridian': 30.0,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'projected_crs_name': 'KKJ / Finland zone 4',
'reference_ellipsoid_name': 'International 1924',
'scale_factor_at_central_meridian': 1.0,
'semi_major_axis': 6378388.0,
'semi_minor_axis': 6356911.9461279465}