metre
Cadastre, engineering survey, topographic mapping (large scale).
None
China - between 91°30'E and 94°30'E.
Data Source: EPSG v11.022 2024-11-05
Datum: China 2000
Coordinate System: cartesian
Projection: 3-degree Gauss-Kruger zone 31
Geodetic CRS: China Geodetic Coordinate System 2000
PROJCRS["CGCS2000 / 3-degree Gauss-Kruger zone 31",
BASEGEOGCRS["China Geodetic Coordinate System 2000",
DATUM["China 2000",
ELLIPSOID["CGCS2000",6378137,298.257222101,
LENGTHUNIT["metre",1]]],
PRIMEM["Greenwich",0,
ANGLEUNIT["degree",0.0174532925199433]],
ID["EPSG",4490]],
CONVERSION["3-degree Gauss-Kruger zone 31",
METHOD["Transverse Mercator",
ID["EPSG",9807]],
PARAMETER["Latitude of natural origin",0,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8801]],
PARAMETER["Longitude of natural origin",93,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8802]],
PARAMETER["Scale factor at natural origin",1,
SCALEUNIT["unity",1],
ID["EPSG",8805]],
PARAMETER["False easting",31500000,
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["Cadastre, engineering survey, topographic mapping (large scale)."],
AREA["China - between 91°30'E and 94°30'E."],
BBOX[27.71,91.5,45.13,94.5]],
ID["EPSG",4519]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "ProjectedCRS",
"name": "CGCS2000 / 3-degree Gauss-Kruger zone 31",
"base_crs": {
"name": "China Geodetic Coordinate System 2000",
"datum": {
"type": "GeodeticReferenceFrame",
"name": "China 2000",
"ellipsoid": {
"name": "CGCS2000",
"semi_major_axis": 6378137,
"inverse_flattening": 298.257222101
}
},
"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": 4490
}
},
"conversion": {
"name": "3-degree Gauss-Kruger zone 31",
"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": 93,
"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": 31500000,
"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": "Cadastre, engineering survey, topographic mapping (large scale).",
"area": "China - between 91°30'E and 94°30'E.",
"bbox": {
"south_latitude": 27.71,
"west_longitude": 91.5,
"north_latitude": 45.13,
"east_longitude": 94.5
},
"id": {
"authority": "EPSG",
"code": 4519
}
}
{'crs_wkt': 'PROJCRS["CGCS2000 / 3-degree Gauss-Kruger zone '
'31",BASEGEOGCRS["China Geodetic Coordinate System '
'2000",DATUM["China '
'2000",ELLIPSOID["CGCS2000",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4490]],CONVERSION["3-degree '
'Gauss-Kruger zone 31",METHOD["Transverse '
'Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural '
'origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
'of natural '
'origin",93,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
'factor at natural '
'origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
'easting",31500000,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["Cadastre, '
'engineering survey, topographic mapping (large '
'scale)."],AREA["China - between 91°30\'E and '
'94°30\'E."],BBOX[27.71,91.5,45.13,94.5]],ID["EPSG",4519]]',
'false_easting': 31500000.0,
'false_northing': 0.0,
'geographic_crs_name': 'China Geodetic Coordinate System 2000',
'grid_mapping_name': 'transverse_mercator',
'horizontal_datum_name': 'China 2000',
'inverse_flattening': 298.257222101,
'latitude_of_projection_origin': 0.0,
'longitude_of_central_meridian': 93.0,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'projected_crs_name': 'CGCS2000 / 3-degree Gauss-Kruger zone 31',
'reference_ellipsoid_name': 'CGCS2000',
'scale_factor_at_central_meridian': 1.0,
'semi_major_axis': 6378137.0,
'semi_minor_axis': 6356752.314140356}