> At what point due to curvature of the earth would we be forced to move > from the cartesian coordinant system?
At 0.338 miles, the deviation due to earth's curvature is about a quarter of an inch. That doesn't mean we can't still build (or at least design) flat things that big. _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user