> I've seen commercial tools that have some predefined grids like rectangular, > polar, smith but so far none have taken it to the next level of letting you > add custom ones or the custom readout.
Just in case you missed it - qucs has a number of plotting outputs including a Smith chart. I don't recall how good it is in terms of the interactivity with datapoints on the various graphs. Geoff _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user