Glossary
- QGIS
- QGIS is a geo data server that supports vector data, raster data and database systems. It can be based on several operating systems, such as, Windows, MAC and Linux.
- Quasi geoid
- The quasi geoid is the reference surface for normal height and results from the excavation of normal height off the earth’s surface. The differences between geoid and quasi geoid range between centimetres to decimetres.