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Method: NTv2
Grid Files: TN15-ETRS89-to-GWWWA22-IRF.gsb
Remarks: In conjunction with the GW22-LCC map projection (code 10211) applied to GWWWA22-IRF (code 10219), emulates the GWWWA22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines GWWWA22-IRF hence is errorless.
Information source: Network Rail.
Revision date: 2023-01-12
Unit: metre
Geodetic CRS: ETRS89
Datum: European Terrestrial Reference System 1989 ensemble
Data source: EPSG
Information source: Norwegian Mapping Authority
Revision date: 2020-03-30
Scope: Engineering survey.
Remarks: ETRS89 / UTM is the projected CRS for Norway recommended by the Norwegian Mapping Authority. This CRS using NTM is an alternative when UTM scale is too far from unity, in particular for construction projects.
Area of use: Norway - onshore - between 20°E and 21°E.
Coordinate system: Cartesian 2D CS. Axes: northing, easting (N,E). Orientations: north, east. UoM: m.
&stroke=red&width=2&path=51.55,-5.16|52.06,-5.16|52.06,-3.6|51.55,-3.6|51.55,-5.16)
Center coordinates
-1601844.07 609049.59
Projected bounds:
-1664533.17 562610.69
-1539697.14 655995.47
WGS84 bounds:
-5.16 51.55
-3.6 52.06
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["ETRS89 / NTM zone 20", BASEGEOGCRS["ETRS89", ENSEMBLE["European Terrestrial Reference System 1989 ensemble", MEMBER["European Terrestrial Reference Frame 1989"], MEMBER["European Terrestrial Reference Frame 1990"], MEMBER["European Terrestrial Reference Frame 1991"], MEMBER["European Terrestrial Reference Frame 1992"], MEMBER["European Terrestrial Reference Frame 1993"], MEMBER["European Terrestrial Reference Frame 1994"], MEMBER["European Terrestrial Reference Frame 1996"], MEMBER["European Terrestrial Reference Frame 1997"], MEMBER["European Terrestrial Reference Frame 2000"], MEMBER["European Terrestrial Reference Frame 2005"], MEMBER["European Terrestrial Reference Frame 2014"], ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[0.1]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4258]], CONVERSION["Norway TM zone 20", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",58, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",20.5, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",1, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",100000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",1000000, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["northing (N)",north, ORDER[1], LENGTHUNIT["metre",1]], AXIS["easting (E)",east, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey."], AREA["Norway - onshore - between 20°E and 21°E."], BBOX[68.37,20,70.37,21.01]], ID["EPSG",5120]]], TARGETCRS[ GEOGCRS["GWWWA22-IRF", DATUM["GWWWA22 Intermediate Reference Frame", 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["Engineering survey and topographic mapping for railway applications."], AREA["United Kingdom (UK) - on or related to the rail routes from Swansea to Pembroke Dock, Milford Haven and Fishguard."], BBOX[51.55,-5.16,52.06,-3.6]], ID["EPSG",10219]]], ABRIDGEDTRANSFORMATION["ETRS89 to GWWWA22-IRF (1)", METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","TN15-ETRS89-to-GWWWA22-IRF.gsb"], USAGE[ SCOPE["Engineering survey and topographic mapping for railway applications."], AREA["United Kingdom (UK) - on or related to the rail routes from Swansea to Pembroke Dock, Milford Haven and Fishguard."], BBOX[51.55,-5.16,52.06,-3.6]], ID["EPSG",10220], REMARK["In conjunction with the GW22-LCC map projection (code 10211) applied to GWWWA22-IRF (code 10219), emulates the GWWWA22 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines GWWWA22-IRF hence is errorless. "]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "ETRS89 / NTM zone 20", "base_crs": { "name": "ETRS89", "datum_ensemble": { "name": "European Terrestrial Reference System 1989 ensemble", "members": [ { "name": "European Terrestrial Reference Frame 1989", "id": { "authority": "EPSG", "code": 1178 } }, { "name": "European Terrestrial Reference Frame 1990", "id": { "authority": "EPSG", "code": 1179 } }, { "name": "European Terrestrial Reference Frame 1991", "id": { "authority": "EPSG", "code": 1180 } }, { "name": "European Terrestrial Reference Frame 1992", "id": { "authority": "EPSG", "code": 1181 } }, { "name": "European Terrestrial Reference Frame 1993", "id": { "authority": "EPSG", "code": 1182 } }, { "name": "European Terrestrial Reference Frame 1994", "id": { "authority": "EPSG", "code": 1183 } }, { "name": "European Terrestrial Reference Frame 1996", "id": { "authority": "EPSG", "code": 1184 } }, { "name": "European Terrestrial Reference Frame 1997", "id": { "authority": "EPSG", "code": 1185 } }, { "name": "European Terrestrial Reference Frame 2000", "id": { "authority": "EPSG", "code": 1186 } }, { "name": "European Terrestrial Reference Frame 2005", "id": { "authority": "EPSG", "code": 1204 } }, { "name": "European Terrestrial Reference Frame 2014", "id": { "authority": "EPSG", "code": 1206 } } ], "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 }, "accuracy": "0.1", "id": { "authority": "EPSG", "code": 6258 } }, "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": 4258 } }, "conversion": { "name": "Norway TM zone 20", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 58, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": 20.5, "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": 100000, "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": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre" }, { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5120 } }, "target_crs": { "type": "GeographicCRS", "name": "GWWWA22-IRF", "datum": { "type": "GeodeticReferenceFrame", "name": "GWWWA22 Intermediate Reference Frame", "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": 10219 } }, "transformation": { "name": "ETRS89 to GWWWA22-IRF (1)", "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "TN15-ETRS89-to-GWWWA22-IRF.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "id": { "authority": "EPSG", "code": 10220 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=tmerc +lat_0=58 +lon_0=20.5 +k=1 +x_0=100000 +y_0=1000000 +ellps=GRS80 +units=m +no_defs +type=crs"> <Layer srs="+proj=tmerc +lat_0=58 +lon_0=20.5 +k=1 +x_0=100000 +y_0=1000000 +ellps=GRS80 +units=m +no_defs +type=crs"> </Layer> </Map>
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