usa questo: http://arcscripts.esri.com/details.asp?dbid=10520
e poi utilizzaa i tuoi shapes come vuoi.

E.


Enrico Bonino
Museum Curator at the Back to the Past Museum, Cancun, Mexico
www.backtothepast.com.mx
www.facebook.com/BackToThePastMuseum/
www.enrico-bonino.eu