Geodetic CRS: LKS-92
Datum: Latvian geodetic coordinate system 1992
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Geodesy Department, Latvian Geospatial Information Agency. https://www.lgia.gov.lv/
Revision date: 2025-04-10
Scope: Spatial referencing.
Remarks: Accuracy of transformation is at 1 cm level one sigma. Care! The NTv2 format requires longitudes to be positive west. At a given point, LKS-2020 latitude (positive north) has a greater value than LKS-92 latitude and LKS-2020 longitude (positive east) has a lesser value than LKS-92 longitude. For point Odukalns: 56.8283960°N, 24.2727688°E (LKS-92) = 56.8283967°N, 24.2727679°E (LKS-2020).
Method: NTv2
Area of use: Latvia - onshore and offshore.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["LKS-92 to LKS-2020 (1)", VERSION["LGIA-Lva"], SOURCECRS[ GEOGCRS["LKS-92", DATUM["Latvian geodetic coordinate system 1992", 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",4661]]], TARGETCRS[ GEOGCRS["LKS-2020", DATUM["Latvian coordinate system 2020", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[2020.28]], 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",10305]]], METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","LKS92to2020NTv2.gsb"], OPERATIONACCURACY[0.02], USAGE[ SCOPE["Spatial referencing."], AREA["Latvia - onshore and offshore."], BBOX[55.67,19.06,58.09,28.24]], ID["EPSG",10838], REMARK["Accuracy of transformation is at 1 cm level one sigma. Care! The NTv2 format requires longitudes to be positive west. At a given point, LKS-2020 latitude (positive north) has a greater value than LKS-92 latitude and LKS-2020 longitude (positive east) has a lesser value than LKS-92 longitude. For point Odukalns: 56.8283960°N, 24.2727688°E (LKS-92) = 56.8283967°N, 24.2727679°E (LKS-2020)."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:10838","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=lv_lgia_lks92to2020.tif +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": "LKS-92 to LKS-2020 (1)", "source_crs": { "type": "GeographicCRS", "name": "LKS-92", "datum": { "type": "GeodeticReferenceFrame", "name": "Latvian geodetic coordinate system 1992", "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": 4661 } }, "target_crs": { "type": "GeographicCRS", "name": "LKS-2020", "datum": { "type": "GeodeticReferenceFrame", "name": "Latvian coordinate system 2020", "anchor_epoch": 2020.279999999999, "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": 10305 } }, "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "LKS92to2020NTv2.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "accuracy": "0.02", "scope": "Spatial referencing.", "area": "Latvia - onshore and offshore.", "bbox": { "south_latitude": 55.67, "west_longitude": 19.06, "north_latitude": 58.09, "east_longitude": 28.24 }, "id": { "authority": "EPSG", "code": 10838 }, "remarks": "Accuracy of transformation is at 1 cm level one sigma. Care! The NTv2 format requires longitudes to be positive west. At a given point, LKS-2020 latitude (positive north) has a greater value than LKS-92 latitude and LKS-2020 longitude (positive east) has a lesser value than LKS-92 longitude. For point Odukalns: 56.8283960°N, 24.2727688°E (LKS-92) = 56.8283967°N, 24.2727679°E (LKS-2020)." }
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=lv_lgia_lks92to2020.tif" "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=lv_lgia_lks92to2020.tif +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=lv_lgia_lks92to2020.tif +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 ( 10838, 'EPSG', 10838, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=lv_lgia_lks92to2020.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');