Thanks Ben, I'm trying to attack the problem with the geometry approach. I will add your correction just now
Its time for me to do some work, consult the manual and learn from my mistakes. I will post the solution when I finished. Thanks to all again pvaldes _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users