GPS, for example, usesWGS84as the global coordinate system, and with it is the WGS84 ellipsoid. HAE, or Height Above Ellipsoid, or "elevation above surface of ellipsoid", is commonly the form of altitude a GPS receiver returns. It differs fromAGL(height above ground level) and MSL (heigh...
However, GPS elevation data is accurate within only 20m, and there may be significant differences from a measured ground point. The WGS84 ellipsoid is also very different from the actual sea levels in many places by over 50m. Ground Control Points or AeroPoints If you use ground co...
Sea level is—and has always been—in equilibrium with the planet's gravity, which pulls the water toward the earth's center of mass, and the outward centrifugal force, which results from the earth's rotation. After a few billion years of spinning, the earth has taken on the shape of a...
WGS84 (EPSG:4326) is standard for GPS The Global Positioning System uses the World Geodetic System (WGS84) as its reference coordinate system. It comprises of a reference ellipsoid, a standard coordinate system, altitude data and a geoid. See https://gisgeography.com/wgs84-world-geodetic-syst...
Regenerate path data using "Relative" altitude mode to enable. [Item #15253] o Fixed issue where fly-through view would not be correct if path layer is not in global projection. [Item #16125] Path Profile/Line of Sight Function Changes o [LIDAR MODULE ONLY] Allow undeleting deleted...
The GeoJSON spec says "The default CRS is a geographic coordinate reference system, using the WGS84 datum, and with longitude and latitude units of decimal degrees". It doesn't seem to specify what the units of elevation/altitude/z are for points. Is there a default unit of altit...
3D Point Models now take altitude mode into account. Added a dozen new 3D point styles to choose from. Prevent vector features from drawing in the 3D viewer when “Display Lidar Features” is checked in the 3D View Properties, and “Display 3D Vector Features in Space Above/Below Terrain Su...