API Reference > imodeljs-common > DisplayStyles > TerrainHeightOriginMode TerrainHeightOriginMode Enumeration Correction modes for terrain height see TerrainProps Members Name Value Description Geodetic 0 Height value indicates the geodetic height of the IModel origin (also referred to as ellipsoidal or GPS height) Geoid 1 Height value indicates the geoidal height of the IModel origin (commonly referred to as sea level). Ground 2 Height value indicates the height of the IModel origin relative to ground level at project center. Defined in core/common/src/TerrainSettings.ts Line 41 Last Updated: 29 November, 2022