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Geodetic CRS: CIGD11
Datum: Cayman Islands Geodetic Datum 2011
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Lands and Surveys Department, Cayman Islands Government.
Revision date: 2021-02-05
Scope: Reversible geoid model transformation.
Remarks: Reversible alternative to CIGD11 to CBVD61 height (ft) (1) (code 6140). Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet.
Method: Geog3D to Geog2D+GravityRelatedHeight (CI)
Area of use: Cayman Islands - Cayman Brac.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["CIGD11 to CIGD11 + CBVD61 height (ft) (1)", VERSION["LSD-Cym"], SOURCECRS[ GEOGCRS["CIGD11", DATUM["Cayman Islands Geodetic Datum 2011", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",6134]]], TARGETCRS[ COMPOUNDCRS["CIGD11 + CBVD61 height (ft)", GEOGCRS["CIGD11", DATUM["Cayman Islands 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]]], VERTCRS["CBVD61 height (ft)", VDATUM["Cayman Brac Vertical Datum 1961"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["foot",0.3048]]], ID["EPSG",9502]]], METHOD["Geog3D to Geog2D+GravityRelatedHeight (CI)", ID["EPSG",1091]], PARAMETERFILE["Geoid (height correction) model file","CBGM0811.TXT"], INTERPOLATIONCRS[ GEOGCRS["CIGD11", DATUM["Cayman Islands 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]]]], OPERATIONACCURACY[0.03], USAGE[ SCOPE["Reversible geoid model transformation."], AREA["Cayman Islands - Cayman Brac."], BBOX[19.66,-79.92,19.78,-79.69]], ID["EPSG",9602], REMARK["Reversible alternative to CIGD11 to CBVD61 height (ft) (1) (code 6140). Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:9602","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=CBGM0811.TXT +multiplier=1 +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": "CIGD11 to CIGD11 + CBVD61 height (ft) (1)", "source_crs": { "type": "GeographicCRS", "name": "CIGD11", "datum": { "type": "GeodeticReferenceFrame", "name": "Cayman Islands 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" }, { "name": "Ellipsoidal height", "abbreviation": "h", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 6134 } }, "target_crs": { "type": "CompoundCRS", "name": "CIGD11 + CBVD61 height (ft)", "components": [ { "type": "GeographicCRS", "name": "CIGD11", "datum": { "type": "GeodeticReferenceFrame", "name": "Cayman Islands 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" } ] } }, { "type": "VerticalCRS", "name": "CBVD61 height (ft)", "datum": { "type": "VerticalReferenceFrame", "name": "Cayman Brac Vertical Datum 1961" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": { "type": "LinearUnit", "name": "foot", "conversion_factor": 0.3048 } } ] } } ], "id": { "authority": "EPSG", "code": 9502 } }, "interpolation_crs": { "type": "GeographicCRS", "name": "CIGD11", "datum": { "type": "GeodeticReferenceFrame", "name": "Cayman Islands 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": 6135 } }, "method": { "name": "Geog3D to Geog2D+GravityRelatedHeight (CI)", "id": { "authority": "EPSG", "code": 1091 } }, "parameters": [ { "name": "Geoid (height correction) model file", "value": "CBGM0811.TXT", "id": { "authority": "EPSG", "code": 8666 } } ], "accuracy": "0.03", "scope": "Reversible geoid model transformation.", "area": "Cayman Islands - Cayman Brac.", "bbox": { "south_latitude": 19.66, "west_longitude": -79.92, "north_latitude": 19.78, "east_longitude": -79.69 }, "id": { "authority": "EPSG", "code": 9602 }, "remarks": "Reversible alternative to CIGD11 to CBVD61 height (ft) (1) (code 6140). Care: source CRS heights are in metres, transformation file parameter values and target CRS heights are in feet." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "inv" "proj=vgridshift" "grids=CBGM0811.TXT" "multiplier=1" "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=vgridshift +grids=CBGM0811.TXT +multiplier=1 +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=vgridshift +grids=CBGM0811.TXT +multiplier=1 +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 ( 9602, 'EPSG', 9602, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=CBGM0811.TXT +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
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