Step 1 is necessary to rescale the grid units before using step 2.
OGP
2020-03-14
degree (supplier to define representation)
EPSG
Defence Geographic Centre.
2006-07-24
Metrication of RSO grid.
Used only for metrication of RSO grid. See Kertau 1968 (CRS code 4245) for other purposes. Replaced by GDM2000 (CRS code 4742).
Malaysia - West Malaysia; Singapore.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ GEOGCRS["Kertau (RSO)", DATUM["Kertau (RSO)", ELLIPSOID["Everest 1830 (RSO 1969)",6377295.664,300.8017, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4751]]], TARGETCRS[ GEOGCRS["Kertau 1968", DATUM["Kertau 1968", ELLIPSOID["Everest 1830 Modified",6377304.063,300.8017, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4245]]], ABRIDGEDTRANSFORMATION["Kertau (RSO) to Kertau 1968 (1)", METHOD["Geocentric translations (geog2D domain)", ID["EPSG",9603]], PARAMETER["X-axis translation",0, ID["EPSG",8605]], PARAMETER["Y-axis translation",0, ID["EPSG",8606]], PARAMETER["Z-axis translation",0, ID["EPSG",8607]], ID["EPSG",15896]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "GeographicCRS", "name": "Kertau (RSO)", "datum": { "type": "GeodeticReferenceFrame", "name": "Kertau (RSO)", "ellipsoid": { "name": "Everest 1830 (RSO 1969)", "semi_major_axis": 6377295.664, "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": 4751 } }, "target_crs": { "type": "GeographicCRS", "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 } }, "transformation": { "name": "Kertau (RSO) to Kertau 1968 (1)", "method": { "name": "Geocentric translations (geog2D domain)", "id": { "authority": "EPSG", "code": 9603 } }, "parameters": [ { "name": "X-axis translation", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } } ], "id": { "authority": "EPSG", "code": 15896 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=longlat +ellps=evrst69 +towgs84=-11,851,5,0,0,0,0 +no_defs +type=crs"> <Layer srs="+proj=longlat +ellps=evrst69 +towgs84=-11,851,5,0,0,0,0 +no_defs +type=crs"> </Layer> </Map>