Hi All,

I was wondering if there is anyone here who has experience or links with a good howto about calibrating self scanned maps against a GPS (i.e to show the GPS position read from a GPS receiver on a self scanned map)
I searched google, found some bits of information,but nothing really that explains this in a practical way.
From what I read, it should be enough to be able to mark 3 points on the scanned image, and from it to calculate the pixel/GPS coordinate...
Since I am working on a project (not commercial) with a very tight time schedule, I am looking for libs and code snipets and howtos on the subject.
Oh, if any of you guys also have any experience or good links about how to control a HAM radio antenna rotor that will be cool as well.

Thanks.