metre
Topographic mapping (medium and small scale).
None
Cameroon - coastal area.
Data Source: EPSG v11.016 2024-08-31
Datum: Douala 1948
Coordinate System: cartesian
Projection: French Equatorial Africa west zone
Geodetic CRS: Douala 1948
PROJCRS["Douala 1948 / AEF west",
BASEGEOGCRS["Douala 1948",
DATUM["Douala 1948",
ELLIPSOID["International 1924",6378388,297,
LENGTHUNIT["metre",1]]],
PRIMEM["Greenwich",0,
ANGLEUNIT["degree",0.0174532925199433]],
ID["EPSG",4192]],
CONVERSION["French Equatorial Africa west zone",
METHOD["Transverse Mercator",
ID["EPSG",9807]],
PARAMETER["Latitude of natural origin",0,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8801]],
PARAMETER["Longitude of natural origin",10.5,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8802]],
PARAMETER["Scale factor at natural origin",0.999,
SCALEUNIT["unity",1],
ID["EPSG",8805]],
PARAMETER["False easting",1000000,
LENGTHUNIT["metre",1],
ID["EPSG",8806]],
PARAMETER["False northing",1000000,
LENGTHUNIT["metre",1],
ID["EPSG",8807]]],
CS[Cartesian,2],
AXIS["(E)",east,
ORDER[1],
LENGTHUNIT["metre",1]],
AXIS["(N)",north,
ORDER[2],
LENGTHUNIT["metre",1]],
USAGE[
SCOPE["Topographic mapping (medium and small scale)."],
AREA["Cameroon - coastal area."],
BBOX[2.16,8.45,4.99,10.4]],
ID["EPSG",3119]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "ProjectedCRS",
"name": "Douala 1948 / AEF west",
"base_crs": {
"name": "Douala 1948",
"datum": {
"type": "GeodeticReferenceFrame",
"name": "Douala 1948",
"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": 4192
}
},
"conversion": {
"name": "French Equatorial Africa west zone",
"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": 10.5,
"unit": "degree",
"id": {
"authority": "EPSG",
"code": 8802
}
},
{
"name": "Scale factor at natural origin",
"value": 0.999,
"unit": "unity",
"id": {
"authority": "EPSG",
"code": 8805
}
},
{
"name": "False easting",
"value": 1000000,
"unit": "metre",
"id": {
"authority": "EPSG",
"code": 8806
}
},
{
"name": "False northing",
"value": 1000000,
"unit": "metre",
"id": {
"authority": "EPSG",
"code": 8807
}
}
]
},
"coordinate_system": {
"subtype": "Cartesian",
"axis": [
{
"name": "Easting",
"abbreviation": "E",
"direction": "east",
"unit": "metre"
},
{
"name": "Northing",
"abbreviation": "N",
"direction": "north",
"unit": "metre"
}
]
},
"scope": "Topographic mapping (medium and small scale).",
"area": "Cameroon - coastal area.",
"bbox": {
"south_latitude": 2.16,
"west_longitude": 8.45,
"north_latitude": 4.99,
"east_longitude": 10.4
},
"id": {
"authority": "EPSG",
"code": 3119
}
}
{'crs_wkt': 'PROJCRS["Douala 1948 / AEF west",BASEGEOGCRS["Douala '
'1948",DATUM["Douala 1948",ELLIPSOID["International '
'1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4192]],CONVERSION["French '
'Equatorial Africa west zone",METHOD["Transverse '
'Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural '
'origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
'of natural '
'origin",10.5,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
'factor at natural '
'origin",0.999,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
'easting",1000000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
'northing",1000000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["(E)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["(N)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Topographic '
'mapping (medium and small scale)."],AREA["Cameroon - coastal '
'area."],BBOX[2.16,8.45,4.99,10.4]],ID["EPSG",3119]]',
'false_easting': 1000000.0,
'false_northing': 1000000.0,
'geographic_crs_name': 'Douala 1948',
'grid_mapping_name': 'transverse_mercator',
'horizontal_datum_name': 'Douala 1948',
'inverse_flattening': 297.0,
'latitude_of_projection_origin': 0.0,
'longitude_of_central_meridian': 10.5,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'projected_crs_name': 'Douala 1948 / AEF west',
'reference_ellipsoid_name': 'International 1924',
'scale_factor_at_central_meridian': 0.999,
'semi_major_axis': 6378388.0,
'semi_minor_axis': 6356911.9461279465}