Unit: metre
Geodetic CRS: NAVD88 height
Datum: North American Vertical Datum 1988
Data source: EPSG
Information source: National Geodetic Survey, http://www.ngs.noaa.gov
Revision date: 2019-09-17
Scope: Geodesy, engineering survey, topographic mapping.
Coordinate system: Vertical CS. Axis: height (H). Orientation: up. UoM: m.
Definition: OGC Well Known Text 2 (2019)
VERTCRS["NAVD88 height", VDATUM["North American Vertical Datum 1988"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, engineering survey, topographic mapping."], AREA["Mexico - onshore. United States (USA) - onshore - United States (USA) - Alaska, conterminous (contiguous) lower 48 states (CONUS)."], BBOX[14.51,172.42,71.4,-66.91]], ID["EPSG",5703]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "NAVD88 height", "datum": { "type": "VerticalReferenceFrame", "name": "North American Vertical Datum 1988" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Geodesy, engineering survey, topographic mapping.", "area": "Mexico - onshore. United States (USA) - onshore - United States (USA) - Alaska, conterminous (contiguous) lower 48 states (CONUS).", "bbox": { "south_latitude": 14.51, "west_longitude": 172.42, "north_latitude": 71.4, "east_longitude": -66.91 }, "id": { "authority": "EPSG", "code": 5703 } }
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 ( 5703, 'EPSG', 5703, '+vunits=m +no_defs +type=crs', 'VERT_CS["NAVD88 height",VERT_DATUM["North American Vertical Datum 1988",2005,AUTHORITY["EPSG","5103"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5703"]]');