From: dalai lamah on 29 Nov 2009 12:41
Un bel giorno Rune Allnor digit�:
> I'm working in cm precision in areas of size km x km.
Use floating point coordinates, but referred to the center of your zone of
interest. Removing the integer part of the coordinates (or most of it)
gives you a much better absolute resolution (in the mm domain, IIRC).