Data source: EPSG
Information source: Conseil National de l'Information Geographique groupe de travail "Reseaux de Nivellement" recommendations v5.1 April 1994.
Revision date: 2012-01-21
Scope: Geodesy, engineering survey, topographic mapping.
Remarks: Uses Normal heights.
Area of use: France - mainland onshore.
Definition: OGC Well Known Text
VERT_DATUM["Nivellement General de la France - IGN69",2005, AUTHORITY["EPSG","5119"]]
Definition: OGC Well Known Text 2 (2019)
VDATUM["Nivellement General de la France - IGN69", ID["EPSG",5119]]
Definition: ESRI Well Known Text
VDATUM["Nivellement_General_de_la_France_IGN69"]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Nivellement General de la France - IGN69", "scope": "Geodesy, engineering survey, topographic mapping.", "area": "France - mainland onshore.", "bbox": { "south_latitude": 42.33, "west_longitude": -4.87, "north_latitude": 51.14, "east_longitude": 8.23 }, "id": { "authority": "EPSG", "code": 5119 } }