Is there a function for obtaining the best-fitting plane from a large number of points (something like 25.000 points)? Thank you... Luca -- Email.it, the professional e-mail, gratis per te: http://www.email.it/f Sponsor: Gioca con i Supereroi Marvel sul cellulare! Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=7752&d=8-4