On Tue, Jun 21, 2011 at 01:29:02PM -0700, Russell Dill wrote: > > I've always worried about this too, especially when doing a design in > metric and sending it to an imperial board house. My guess is you need > to calculate the worst case error and add that to the DRC. The > difficult part would be finding all the possible sources of roundoff. > > Perhaps if you could translate the design to a mil grid with a given > precision and *then* run DRC. >
We are working on moving pcb toward metric base units -- then a mm would be 10^6 nm rather than "about 3937.00787 cmils" like we have now. mils would also be an integer (254) number of base units, so hopefully a lot of precision issues will go away. -- Andrew Poelstra Email: asp11 at sfu.ca OR apoelstra at wpsoftware.net Web: http://www.wpsoftware.net/andrew/ _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user