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Method: NTv2
Grid Files: GDA94_GDA2020_conformal.gsb
Remarks: Gives identical results to Helmert transformation GDA94 to GDA2020 (1) (code 8048). See GDA94 to GDA2020 (2) (code 8447) for alternative with local distortion modelling included. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use.
Information source: GDA2020 Technical Manual and ICSM Datum Technical Fact Sheet TN1 (http://www.icsm.gov.au).
Revision date: 2019-09-17
Unit: metre
Geodetic CRS: GDA94
Datum: Geocentric Datum of Australia 1994
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Geocentric Datum of Australia Technical Manual, Intergovernmental Committee on Surveying and Mapping.
Revision date: 2014-02-15
Scope: Engineering survey, topographic mapping.
Area of use: Australia including Lord Howe Island and Macquarie Island - onshore and offshore between 156°E and 162°E.
Coordinate system: Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["GDA94 / MGA zone 57", BASEGEOGCRS["GDA94", DATUM["Geocentric Datum of Australia 1994", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4283]], CONVERSION["Map Grid of Australia zone 57", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",159, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",10000000, 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["Engineering survey, topographic mapping."], AREA["Australia including Lord Howe Island and Macquarie Island - onshore and offshore between 156°E and 162°E."], BBOX[-60.56,156,-14.08,162.01]], ID["EPSG",28357]]], TARGETCRS[ GEOGCRS["GDA2020", DATUM["Geocentric Datum of Australia 2020", ELLIPSOID["GRS 1980",6378137,298.257222101, 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]], USAGE[ SCOPE["Geodesy, cadastre, engineering survey, topographic mapping."], AREA["Australia including Lord Howe Island, Macquarie Island, Ashmore and Cartier Islands, Christmas Island, Cocos (Keeling) Islands, Norfolk Island. All onshore and offshore."], BBOX[-60.55,93.41,-8.47,173.34]], ID["EPSG",7844]]], ABRIDGEDTRANSFORMATION["GDA94 to GDA2020 (3)", METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","GDA94_GDA2020_conformal.gsb"], USAGE[ SCOPE["Transformation of GDA94 coordinates that have been derived through GNSS CORS."], AREA["Australia - Australian Capital Territory; New South Wales; Northern Territory; Queensland; South Australia; Tasmania; Western Australia; Victoria."], BBOX[-43.7,112.85,-9.86,153.69]], ID["EPSG",8446], REMARK["Gives identical results to Helmert transformation GDA94 to GDA2020 (1) (code 8048). See GDA94 to GDA2020 (2) (code 8447) for alternative with local distortion modelling included. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "GDA94 / MGA zone 57", "base_crs": { "name": "GDA94", "datum": { "type": "GeodeticReferenceFrame", "name": "Geocentric Datum of Australia 1994", "ellipsoid": { "name": "GRS 1980", "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": 4283 } }, "conversion": { "name": "Map Grid of Australia zone 57", "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": 159, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9996, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 500000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 10000000, "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" } ] }, "id": { "authority": "EPSG", "code": 28357 } }, "target_crs": { "type": "GeographicCRS", "name": "GDA2020", "datum": { "type": "GeodeticReferenceFrame", "name": "Geocentric Datum of Australia 2020", "ellipsoid": { "name": "GRS 1980", "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": 7844 } }, "transformation": { "name": "GDA94 to GDA2020 (3)", "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "GDA94_GDA2020_conformal.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "id": { "authority": "EPSG", "code": 8446 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=utm +zone=57 +south +ellps=GRS80 +units=m +no_defs +type=crs"> <Layer srs="+proj=utm +zone=57 +south +ellps=GRS80 +units=m +no_defs +type=crs"> </Layer> </Map>
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