Skip to main content

Published on 8 January 2024

Reference system as theoretical basis for coordinates

The reference system forms the theoretical basis for calculating coordinates. For this purpose the measurement units, zero point and position of the coordinates system have to be defined. In the reference system the type of map projection is also specified that is to be used for depicting the spherical earth on a map. There are global, European and Swiss reference systems. 

Federal Office of Topography swisstopo

Division Geodesy and Federal Directorate of Cadastral Surveying
Seftigenstrasse 264
3084 Wabern