metre
EPSG
Land Information New Zealand (LINZ) standard S25004.
2011-01-25
Geodesy, engineering survey, topographic mapping.
New Zealand - South Island - Dunedin-Bluff vertical CRS area.
-45.62 168.16
-46.73 166.37
-44.52 169.95
166.37 -46.73
169.95 -44.52
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Dunedin-Bluff 1960 height", VDATUM["Dunedin-Bluff 1960"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, engineering survey, topographic mapping."], AREA["New Zealand - South Island - Dunedin-Bluff vertical CRS area."], BBOX[-46.73,166.37,-44.52,169.95]], ID["EPSG",4458]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Dunedin-Bluff 1960 height", "datum": { "type": "VerticalReferenceFrame", "name": "Dunedin-Bluff 1960" }, "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 - Dunedin-Bluff vertical CRS area.", "bbox": { "south_latitude": -46.73, "west_longitude": 166.37, "north_latitude": -44.52, "east_longitude": 169.95 }, "id": { "authority": "EPSG", "code": 4458 } }
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 ( 4458, 'EPSG', 4458, '+vunits=m +no_defs +type=crs', 'VERT_CS["Dunedin-Bluff 1960 height",VERT_DATUM["Dunedin-Bluff 1960",2005,AUTHORITY["EPSG","1040"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","4458"]]');