Geodesy, engineering survey, topographic mapping.
New Zealand - South Island - between approximately 44°S and 46°S - Dunedin vertical CRS area.
-45.11 169.5
-46.4 167.73
-43.82 171.28
167.73 -46.4
171.28 -43.82
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Dunedin 1958 height", VDATUM["Dunedin 1958"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, engineering survey, topographic mapping."], AREA["New Zealand - South Island - between approximately 44°S and 46°S - Dunedin vertical CRS area."], BBOX[-46.4,167.73,-43.82,171.28]], ID["EPSG",5761]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Dunedin 1958 height", "datum": { "type": "VerticalReferenceFrame", "name": "Dunedin 1958" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Geodesy, engineering survey, topographic mapping.", "area": "New Zealand - South Island - between approximately 44°S and 46°S - Dunedin vertical CRS area.", "bbox": { "south_latitude": -46.4, "west_longitude": 167.73, "north_latitude": -43.82, "east_longitude": 171.28 }, "id": { "authority": "EPSG", "code": 5761 } }
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 ( 5761, 'EPSG', 5761, '+vunits=m +no_defs +type=crs', 'VERT_CS["Dunedin 1958 height",VERT_DATUM["Dunedin 1958",2005,AUTHORITY["EPSG","5159"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5761"]]');