Global Mapper Pro

Loading Data from two sources with different projection

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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.
Rainer



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