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Geodetic CRS: Tokyo
Datum: Tokyo
Ellipsoid: Bessel 1841
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2023-01-17
Scope: Engineering survey, topographic mapping.
Remarks: Parameter values from Tokyo to JGD2000 (2) (tfm code 6712) as in area of applicability JGD2011 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2011 (1) (tfm code 6714) for northern Honshu area.
Method: NTv2
Area of use: Japan - onshore, excluding northern prefectures of 'main province' (see remarks).
Description: (0,)
&stroke=red&width=2&path=20.37,122.83|45.54,122.83|45.54,154.05|20.37,154.05|20.37,122.83)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["Tokyo to JGD2011 (2)", VERSION["OGP-Jpn ex N Honshu"], SOURCECRS[ GEOGCRS["Tokyo", DATUM["Tokyo", ELLIPSOID["Bessel 1841",6377397.155,299.1528128, 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",4301]]], TARGETCRS[ GEOGCRS["JGD2011", DATUM["Japanese Geodetic Datum 2011", 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]], ID["EPSG",6668]]], METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","tky2jgd.gsb"], OPERATIONACCURACY[0.2], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Japan - onshore, excluding northern prefectures of 'main province' (see remarks)."], BBOX[20.37,122.83,45.54,154.05]], ID["EPSG",6740], REMARK["Parameter values from Tokyo to JGD2000 (2) (tfm code 6712) as in area of applicability JGD2011 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2011 (1) (tfm code 6714) for northern Honshu area."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:6740","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=tky2jgd.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "Tokyo to JGD2011 (2)", "source_crs": { "type": "GeographicCRS", "name": "Tokyo", "datum": { "type": "GeodeticReferenceFrame", "name": "Tokyo", "ellipsoid": { "name": "Bessel 1841", "semi_major_axis": 6377397.155, "inverse_flattening": 299.1528128 } }, "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": 4301 } }, "target_crs": { "type": "GeographicCRS", "name": "JGD2011", "datum": { "type": "GeodeticReferenceFrame", "name": "Japanese Geodetic Datum 2011", "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": 6668 } }, "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "tky2jgd.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "accuracy": "0.2", "scope": "Engineering survey, topographic mapping.", "area": "Japan - onshore, excluding northern prefectures of 'main province' (see remarks).", "bbox": { "south_latitude": 20.37, "west_longitude": 122.83, "north_latitude": 45.54, "east_longitude": 154.05 }, "id": { "authority": "EPSG", "code": 6740 }, "remarks": "Parameter values from Tokyo to JGD2000 (2) (tfm code 6712) as in area of applicability JGD2011 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2011 (1) (tfm code 6714) for northern Honshu area." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "proj=hgridshift" "grids=tky2jgd.gsb" "step" "proj=unitconvert" "xy_in=rad" "xy_out=deg" "step" "proj=axisswap" "order=2,1" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=tky2jgd.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> <Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=tky2jgd.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6740, 'EPSG', 6740, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=tky2jgd.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
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