Am Mittwoch, den 19.11.2008, 22:05 +0000 schrieb Peter Clifton: > > Fine over a small component, however if you're trying to position > mechanical items on a large board, you don't want accumulated drift. > (This said.. perhaps it would still be acceptable if the internal units > are small enough). >
Yes I know. One problem is user input, one spacing of pads of components. I think for user input there is no drift. For components there is -- I think this was the reason that internal coordinates moved from 1 mil to 0.01mil to have less drift or variation in pin to pin spacing for mm parts. I think for parts with 100 pins there is now a total error of maximum 1 mil (100*0.01mil). Parts with arbitrary spaced pins can never lie exactly on the grid -- this is clear. This may result to very short traces if these pins are connected to grid points -- this is clear. I think no one would call this a bug -- a routine which removes unnecessary short lines may beautify the result. Best wishes, Stefan Salewski _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user