Global Mapper Pro

Loading Data from two sources with different projection

scr Global Mapper UserTrusted User
Hi there

In Switzerland we changed the coordinate system lately. So we have to deal with different systems all the time.
I have vector data with the projection "PROJ_DESC=Swiss Grid / CH1903 / meters PROJ_DATUM=SWISS GRID (CH1903)" and another source with data with the projection "PROJ_DESC=Swiss Grid (LV95) / CH1903+ / meters PROJ_DATUM=SWISS GRID (CH1903+)"

When I load the two sources in the respective projection I get a small shift in the position.

What is Global Mapper doing? It seems that there is a transformation because the x/y-coordinates are totally different in the two sources.

How can you explain the small shift in my case x 0.8m y 0.15m?
Do I oversee something?

Thank you.


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