Change of height to a different vertical reference surface.
Determined at 5 points. RMS residual 0.013m, maximum residual 0.021m. The Cascais vertical reference surface is below the EVRF2000 vertical reference surface.
Portugal - mainland - onshore.
(0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["Cascais height to EVRF2000 height (1)", VERSION["EuG-Prt"], SOURCECRS[ VERTCRS["Cascais height", VDATUM["Cascais"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",5780]]], TARGETCRS[ VERTCRS["EVRF2000 height", VDATUM["European Vertical Reference Frame 2000"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",5730]]], METHOD["Vertical Offset", ID["EPSG",9616]], PARAMETER["Vertical Offset",-0.315, LENGTHUNIT["metre",1], ID["EPSG",8603]], OPERATIONACCURACY[0.1], USAGE[ SCOPE["Change of height to a different vertical reference surface."], AREA["Portugal - mainland - onshore."], BBOX[36.95,-9.56,42.16,-6.19]], ID["EPSG",5427], REMARK["Determined at 5 points. RMS residual 0.013m, maximum residual 0.021m. The Cascais vertical reference surface is below the EVRF2000 vertical reference surface."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "Cascais height to EVRF2000 height (1)", "source_crs": { "type": "VerticalCRS", "name": "Cascais height", "datum": { "type": "VerticalReferenceFrame", "name": "Cascais" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5780 } }, "target_crs": { "type": "VerticalCRS", "name": "EVRF2000 height", "datum": { "type": "VerticalReferenceFrame", "name": "European Vertical Reference Frame 2000" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5730 } }, "method": { "name": "Vertical Offset", "id": { "authority": "EPSG", "code": 9616 } }, "parameters": [ { "name": "Vertical Offset", "value": -0.315, "unit": "metre", "id": { "authority": "EPSG", "code": 8603 } } ], "accuracy": "0.1", "scope": "Change of height to a different vertical reference surface.", "area": "Portugal - mainland - onshore.", "bbox": { "south_latitude": 36.95, "west_longitude": -9.56, "north_latitude": 42.16, "east_longitude": -6.19 }, "id": { "authority": "EPSG", "code": 5427 }, "remarks": "Determined at 5 points. RMS residual 0.013m, maximum residual 0.021m. The Cascais vertical reference surface is below the EVRF2000 vertical reference surface." }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=geogoffset +dh=-0.315"> <Layer srs="+proj=geogoffset +dh=-0.315"> </Layer> </Map>