Geodesy, engineering survey, topographic mapping.
New Zealand - South Island - between approximately 41°20'S and 45°S - Lyttleton vertical CRS area.
-43.26 171.36
-44.92 168.95
-41.6 173.77
168.95 -44.92
173.77 -41.6
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Lyttelton 1937 height", VDATUM["Lyttelton 1937"], 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 41°20'S and 45°S - Lyttleton vertical CRS area."], BBOX[-44.92,168.95,-41.6,173.77]], ID["EPSG",5763]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Lyttelton 1937 height", "datum": { "type": "VerticalReferenceFrame", "name": "Lyttelton 1937" }, "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 41°20'S and 45°S - Lyttleton vertical CRS area.", "bbox": { "south_latitude": -44.92, "west_longitude": 168.95, "north_latitude": -41.6, "east_longitude": 173.77 }, "id": { "authority": "EPSG", "code": 5763 } }
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 ( 5763, 'EPSG', 5763, '+vunits=m +no_defs +type=crs', 'VERT_CS["Lyttelton 1937 height",VERT_DATUM["Lyttelton 1937",2005,AUTHORITY["EPSG","5161"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5763"]]');