On Tue, Aug 09, 2011 at 04:44:48PM +0300, Antonio Rodriges wrote: > Dear all, > > I have the table "contours" which stores geography column > "coordinates" - these are closed polylines, many of them span a half > of a globe.
Closed polylines contain each other only if there's NO point in one of them being OUTSIDE or ON THE BOUNDARY of the other. --strk; () Free GIS & Flash consultant/developer /\ http://strk.keybit.net/services.html _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users