metre
EPSG
General Directorate of Land, http://www.dgterritorio.pt/
2013-03-15
Geodesy, engineering survey, topographic mapping.
38.64 -28.04
38.48 -28.37
38.8 -27.71
-28.37 38.48
-27.71 38.8
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Cais das Velas height", VDATUM["Cais das Velas"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, engineering survey, topographic mapping."], AREA["Portugal - central Azores - Sao Jorge island onshore."], BBOX[38.48,-28.37,38.8,-27.71]], ID["EPSG",6180]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Cais das Velas height", "datum": { "type": "VerticalReferenceFrame", "name": "Cais das Velas" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Geodesy, engineering survey, topographic mapping.", "area": "Portugal - central Azores - Sao Jorge island onshore.", "bbox": { "south_latitude": 38.48, "west_longitude": -28.37, "north_latitude": 38.8, "east_longitude": -27.71 }, "id": { "authority": "EPSG", "code": 6180 } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+vunits=m +no_defs +type=crs"> <Layer srs="+vunits=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6180, 'EPSG', 6180, '+vunits=m +no_defs +type=crs', 'VERT_CS["Cais das Velas height",VERT_DATUM["Cais das Velas",2005,AUTHORITY["EPSG","1103"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","6180"]]');