...thanks, what a terrific thread ! Haven't been all through it yet. Didn't see any mention of reference ellipsoid either, surprising as I thought that's how gps goes from earth centic cartesian to map + height.
Some of these threads can get surprisingly energetic: begining to wonder why some std pax abuse isn't included with the initial formalities ('..will you clowns please pay attention, even those of you who can't read and paid a stupidly small price for the service we provide..')
