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Method: Geocentric translations (geog2D domain)
Remarks: Derived at 6 stations. Accuracy 10m, 8m and 6m in X, Y and Z axes.
Information source: U.S. Defense Mapping Agency TR8350.2 September 1987.
Revision date: 2020-03-14
Unit: British chain (Benoit 1895 B)
Geodetic CRS: Kertau 1968
Datum: Kertau 1968
Ellipsoid: Everest 1830 Modified
Prime meridian: Greenwich
Data source: EPSG
Revision date: 1999-10-20
Scope: Engineering survey, topographic mapping.
Remarks: Adopts metric conversion of 39.370113 inches per metre.
Area of use: Malaysia - West Malaysia onshore.
Coordinate system: Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: chBnB.
&stroke=red&width=2&path=1.13,99.59|7.81,99.59|7.81,105.82|1.13,105.82|1.13,99.59)
Center coordinates
26028.54 24573.36
Projected bounds:
8755.83 6210.94
43238.88 42992.18
WGS84 bounds:
99.59 1.13
105.82 7.81
Definition: OGC Well Known Text
PROJCS["Kertau / R.S.O. Malaya (ch)", GEOGCS["Kertau 1968", DATUM["Kertau_1968", SPHEROID["Everest 1830 Modified",6377304.063,300.8017], TOWGS84[-11,851,5,0,0,0,0]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4245"]], PROJECTION["Hotine_Oblique_Mercator"], PARAMETER["latitude_of_center",4], PARAMETER["longitude_of_center",102.25], PARAMETER["azimuth",323.0257905], PARAMETER["rectified_grid_angle",323.130102361111], PARAMETER["scale_factor",0.99984], PARAMETER["false_easting",40000], PARAMETER["false_northing",0], UNIT["British chain (Benoit 1895 B)",20.1167824943759], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","24571"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["Kertau / R.S.O. Malaya (ch)", BASEGEOGCRS["Kertau 1968", DATUM["Kertau 1968", ELLIPSOID["Everest 1830 Modified",6377304.063,300.8017, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4245]], CONVERSION["Rectified Skew Orthomorphic Malaya Grid", METHOD["Hotine Oblique Mercator (variant A)", ID["EPSG",9812]], PARAMETER["Latitude of projection centre",4, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8811]], PARAMETER["Longitude of projection centre",102.25, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8812]], PARAMETER["Azimuth of initial line",323.0257905, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8813]], PARAMETER["Angle from Rectified to Skew Grid",323.130102361111, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8814]], PARAMETER["Scale factor on initial line",0.99984, SCALEUNIT["unity",1], ID["EPSG",8815]], PARAMETER["False easting",40000, LENGTHUNIT["British chain (Benoit 1895 B)",20.1167824943759], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["British chain (Benoit 1895 B)",20.1167824943759], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["British chain (Benoit 1895 B)",20.1167824943759]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["British chain (Benoit 1895 B)",20.1167824943759]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Malaysia - West Malaysia onshore."], BBOX[1.21,99.59,6.72,104.6]], ID["EPSG",24571]]
Definition: ESRI Well Known Text
PROJCS["Kertau_RSO_Malaya_Chains", GEOGCS["GCS_Kertau", DATUM["D_Kertau", SPHEROID["Everest_1830_Modified",6377304.063,300.8017]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Rectified_Skew_Orthomorphic_Natural_Origin"], PARAMETER["False_Easting",40000.0], PARAMETER["False_Northing",0.0], PARAMETER["Scale_Factor",0.99984], PARAMETER["Azimuth",-36.9742095], PARAMETER["Longitude_Of_Center",102.25], PARAMETER["Latitude_Of_Center",4.0], PARAMETER["XY_Plane_Rotation",-36.869897638889], UNIT["British chain (Benoit 1895 B)",20.1167824943759]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:24571","+proj=omerc +no_uoff +lat_0=4 +lonc=102.25 +alpha=323.0257905 +gamma=323.130102361111 +k=0.99984 +x_0=804671.299775036 +y_0=0 +ellps=evrst48 +towgs84=-11,851,5,0,0,0,0 +to_meter=20.1167824943759 +no_defs +type=crs");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "Kertau / R.S.O. Malaya (ch)", "base_crs": { "name": "Kertau 1968", "datum": { "type": "GeodeticReferenceFrame", "name": "Kertau 1968", "ellipsoid": { "name": "Everest 1830 Modified", "semi_major_axis": 6377304.063, "inverse_flattening": 300.8017 } }, "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": 4245 } }, "conversion": { "name": "Rectified Skew Orthomorphic Malaya Grid", "method": { "name": "Hotine Oblique Mercator (variant A)", "id": { "authority": "EPSG", "code": 9812 } }, "parameters": [ { "name": "Latitude of projection centre", "value": 4, "unit": "degree", "id": { "authority": "EPSG", "code": 8811 } }, { "name": "Longitude of projection centre", "value": 102.25, "unit": "degree", "id": { "authority": "EPSG", "code": 8812 } }, { "name": "Azimuth of initial line", "value": 323.0257905, "unit": "degree", "id": { "authority": "EPSG", "code": 8813 } }, { "name": "Angle from Rectified to Skew Grid", "value": 323.130102361111, "unit": "degree", "id": { "authority": "EPSG", "code": 8814 } }, { "name": "Scale factor on initial line", "value": 0.99984, "unit": "unity", "id": { "authority": "EPSG", "code": 8815 } }, { "name": "False easting", "value": 40000, "unit": { "type": "LinearUnit", "name": "British chain (Benoit 1895 B)", "conversion_factor": 20.1167824943759 }, "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": { "type": "LinearUnit", "name": "British chain (Benoit 1895 B)", "conversion_factor": 20.1167824943759 }, "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": { "type": "LinearUnit", "name": "British chain (Benoit 1895 B)", "conversion_factor": 20.1167824943759 } }, { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": { "type": "LinearUnit", "name": "British chain (Benoit 1895 B)", "conversion_factor": 20.1167824943759 } } ] }, "scope": "Engineering survey, topographic mapping.", "area": "Malaysia - West Malaysia onshore.", "bbox": { "south_latitude": 1.21, "west_longitude": 99.59, "north_latitude": 6.72, "east_longitude": 104.6 }, "id": { "authority": "EPSG", "code": 24571 } }
Definition: GeoServer
24571=PROJCS["Kertau / R.S.O. Malaya (ch)",GEOGCS["Kertau 1968",DATUM["Kertau_1968",SPHEROID["Everest 1830 Modified",6377304.063,300.8017],TOWGS84[-11,851,5,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4245"]],PROJECTION["Hotine_Oblique_Mercator"],PARAMETER["latitude_of_center",4],PARAMETER["longitude_of_center",102.25],PARAMETER["azimuth",323.0257905],PARAMETER["rectified_grid_angle",323.130102361111],PARAMETER["scale_factor",0.99984],PARAMETER["false_easting",40000],PARAMETER["false_northing",0],UNIT["British chain (Benoit 1895 B)",20.1167824943759],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","24571"]]
Definition: MapServer - MAPfile
PROJECTION "proj=omerc" "no_uoff" "lat_0=4" "lonc=102.25" "alpha=323.0257905" "gamma=323.130102361111" "k=0.99984" "x_0=804671.299775036" "y_0=0" "ellps=evrst48" "towgs84=-11,851,5,0,0,0,0" "to_meter=20.1167824943759" "no_defs" "type=crs" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=omerc +no_uoff +lat_0=4 +lonc=102.25 +alpha=323.0257905 +gamma=323.130102361111 +k=0.99984 +x_0=804671.299775036 +y_0=0 +ellps=evrst48 +towgs84=-11,851,5,0,0,0,0 +to_meter=20.1167824943759 +no_defs +type=crs"> <Layer srs="+proj=omerc +no_uoff +lat_0=4 +lonc=102.25 +alpha=323.0257905 +gamma=323.130102361111 +k=0.99984 +x_0=804671.299775036 +y_0=0 +ellps=evrst48 +towgs84=-11,851,5,0,0,0,0 +to_meter=20.1167824943759 +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 24571, 'EPSG', 24571, '+proj=omerc +no_uoff +lat_0=4 +lonc=102.25 +alpha=323.0257905 +gamma=323.130102361111 +k=0.99984 +x_0=804671.299775036 +y_0=0 +ellps=evrst48 +towgs84=-11,851,5,0,0,0,0 +to_meter=20.1167824943759 +no_defs +type=crs', 'PROJCS["Kertau / R.S.O. Malaya (ch)",GEOGCS["Kertau 1968",DATUM["Kertau_1968",SPHEROID["Everest 1830 Modified",6377304.063,300.8017],TOWGS84[-11,851,5,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4245"]],PROJECTION["Hotine_Oblique_Mercator"],PARAMETER["latitude_of_center",4],PARAMETER["longitude_of_center",102.25],PARAMETER["azimuth",323.0257905],PARAMETER["rectified_grid_angle",323.130102361111],PARAMETER["scale_factor",0.99984],PARAMETER["false_easting",40000],PARAMETER["false_northing",0],UNIT["British chain (Benoit 1895 B)",20.1167824943759],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","24571"]]');
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