Geodesy, engineering survey.
Replaced by IGN78 height (CRS code 5721)
Definition: OGC Well Known Text 2 (2019)
VERTCRS["NGC 1948 height", VDATUM["Nivellement General de la Corse 1948"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, engineering survey."], AREA["France - Corsica onshore."], BBOX[41.31,8.5,43.07,9.63]], ID["EPSG",5791]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "NGC 1948 height", "datum": { "type": "VerticalReferenceFrame", "name": "Nivellement General de la Corse 1948" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Geodesy, engineering survey.", "area": "France - Corsica onshore.", "bbox": { "south_latitude": 41.31, "west_longitude": 8.5, "north_latitude": 43.07, "east_longitude": 9.63 }, "id": { "authority": "EPSG", "code": 5791 } }
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 ( 5791, 'EPSG', 5791, '+vunits=m +no_defs +type=crs', 'VERT_CS["NGC 1948 height",VERT_DATUM["Nivellement General de la Corse 1948",2005,AUTHORITY["EPSG","5189"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5791"]]');