powered by MapTiler
Geodetic CRS: Arc 1950
Datum: Arc 1950
Ellipsoid: Clarke 1880 (Arc)
Prime meridian: Greenwich
Data source: EPSG
Information source: US NGA GeoTrans software v3.4 and NGA Standard 0036 v1.0.0 of 2014-07-08.
Revision date: 2020-03-14
Scope: Military survey.
Remarks: Derived at 7 stations. Accuracy 13m, 25m and 7m in X, Y and Z axes. Info source gives source CRS as Arc 1960. From inspection of parameter values, comparison with other CTs and geographic applicability of CRS, OGP believes that this should be Arc 1950.
Method: Geocentric translations (geog2D domain)
Area of use: Malawi.
Description: (-179.0, -81.0, -314.0, 0.0, 0.0, 0.0, 0.0)
&stroke=red&width=2&path=-17.14,32.68|-9.37,32.68|-9.37,35.93|-17.14,35.93|-17.14,32.68)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["Arc 1950 to WGS 84 (11)", VERSION["NGA-Mwi GeoTrans3-4"], SOURCECRS[ GEOGCRS["Arc 1950", DATUM["Arc 1950", ELLIPSOID["Clarke 1880 (Arc)",6378249.145,293.4663077, 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",4209]]], TARGETCRS[ GEOGCRS["WGS 84", ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)"], MEMBER["World Geodetic System 1984 (G730)"], MEMBER["World Geodetic System 1984 (G873)"], MEMBER["World Geodetic System 1984 (G1150)"], MEMBER["World Geodetic System 1984 (G1674)"], MEMBER["World Geodetic System 1984 (G1762)"], MEMBER["World Geodetic System 1984 (G2139)"], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[2.0]], 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",4326]]], METHOD["Geocentric translations (geog2D domain)", ID["EPSG",9603]], PARAMETER["X-axis translation",-179, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",-81, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",-314, LENGTHUNIT["metre",1], ID["EPSG",8607]], OPERATIONACCURACY[29.0], USAGE[ SCOPE["Military survey."], AREA["Malawi."], BBOX[-17.14,32.68,-9.37,35.93]], ID["EPSG",6904], REMARK["Derived at 7 stations. Accuracy 13m, 25m and 7m in X, Y and Z axes. Info source gives source CRS as Arc 1960. From inspection of parameter values, comparison with other CTs and geographic applicability of CRS, OGP believes that this should be Arc 1950."]]
Definition: PROJ.4
+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.4663077 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.4663077 +step +proj=helmert +x=-179 +y=-81 +z=-314 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:6904","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.4663077 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.4663077 +step +proj=helmert +x=-179 +y=-81 +z=-314 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +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": "Arc 1950 to WGS 84 (11)", "source_crs": { "type": "GeographicCRS", "name": "Arc 1950", "datum": { "type": "GeodeticReferenceFrame", "name": "Arc 1950", "ellipsoid": { "name": "Clarke 1880 (Arc)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.4663077 } }, "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": 4209 } }, "target_crs": { "type": "GeographicCRS", "name": "WGS 84", "datum_ensemble": { "name": "World Geodetic System 1984 ensemble", "members": [ { "name": "World Geodetic System 1984 (Transit)", "id": { "authority": "EPSG", "code": 1166 } }, { "name": "World Geodetic System 1984 (G730)", "id": { "authority": "EPSG", "code": 1152 } }, { "name": "World Geodetic System 1984 (G873)", "id": { "authority": "EPSG", "code": 1153 } }, { "name": "World Geodetic System 1984 (G1150)", "id": { "authority": "EPSG", "code": 1154 } }, { "name": "World Geodetic System 1984 (G1674)", "id": { "authority": "EPSG", "code": 1155 } }, { "name": "World Geodetic System 1984 (G1762)", "id": { "authority": "EPSG", "code": 1156 } }, { "name": "World Geodetic System 1984 (G2139)", "id": { "authority": "EPSG", "code": 1309 } } ], "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "accuracy": "2.0", "id": { "authority": "EPSG", "code": 6326 } }, "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": 4326 } }, "method": { "name": "Geocentric translations (geog2D domain)", "id": { "authority": "EPSG", "code": 9603 } }, "parameters": [ { "name": "X-axis translation", "value": -179, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": -81, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": -314, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } } ], "accuracy": "29.0", "scope": "Military survey.", "area": "Malawi.", "bbox": { "south_latitude": -17.14, "west_longitude": 32.68, "north_latitude": -9.37, "east_longitude": 35.93 }, "id": { "authority": "EPSG", "code": 6904 }, "remarks": "Derived at 7 stations. Accuracy 13m, 25m and 7m in X, Y and Z axes. Info source gives source CRS as Arc 1960. From inspection of parameter values, comparison with other CTs and geographic applicability of CRS, OGP believes that this should be Arc 1950." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "inv" "proj=longlat" "a=6378249.145" "rf=293.4663077" "step" "proj=push" "v_3" "step" "proj=cart" "a=6378249.145" "rf=293.4663077" "step" "proj=helmert" "x=-179" "y=-81" "z=-314" "step" "inv" "proj=cart" "ellps=WGS84" "step" "proj=pop" "v_3" "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 +inv +proj=longlat +a=6378249.145 +rf=293.4663077 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.4663077 +step +proj=helmert +x=-179 +y=-81 +z=-314 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +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 +inv +proj=longlat +a=6378249.145 +rf=293.4663077 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.4663077 +step +proj=helmert +x=-179 +y=-81 +z=-314 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +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 ( 6904, 'EPSG', 6904, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.4663077 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.4663077 +step +proj=helmert +x=-179 +y=-81 +z=-314 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
Find a coordinate system and get position on a map. Powered by EPSG database 11.001
Copyright © 2024
