The Swiss coordinate system is a geographic coordinate system used in Switzerland for maps and surveying by the Swiss Federal Office of Topography .
The geodetic datum CH1903 uses as fundamental point the old observatory of Bern ), the current location of the Institut für exakte Wissenschaften of the University of Bern. In order to avoid errors during coordinate transmissions, the coordinates of this point are 600'000 m E / 200'000 m N. The 0 / 0 coordinate is located near Bordeaux, France. Though E coordinate is denoted as y and N coordinate x, E coordinate is the first axis of this Cartesian system, namely a point is denoted as . As an example, the observatory is . This definition invokes the following effects:
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