Global Mapper Pro

Error by create new projection

vagtazohalottkem Global Mapper UserTrusted User
edited December 2012 in Projection Questions

I'm goreferencing a lot of old maps. I have a paramter list, for the right projection. The projection is an Oblique Stereographic, the ellipsoid is the bessel 1841, and here is 5(!) molodensky parameters:

dx +571
dy -174
dz +571
da 740
df +1e-5

The problem is with the da and df parameters: if i define a new datum, i only can use the first 3 pramaters, the lat two isnt usable. What can i do? I need and other way to make this transformation?



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