Well thats an easy one. If they *exactly* join, http://postgis.refractions.net/documentation/manual-1.4/ST_Union.html
if they are a bit squishy, then one simple way is to: - st_buffer the multiple polygons all individually outwards by say 10km, - st_union them into a single polygon - st_buffer that one polygon inwards (negative) 10km Hopefully helpful contribution from one noob to another. P. Max Pyziur wrote:
Greetings, Could someone please recommend how to create a polygon from a set of polygons? Specifically, a group of states (say, a set of contiguous northeastern United States) and from that form the polygon containing this region Much thanks, Max Pyziur [email protected] _______________________________________________ postgis-users mailing list [email protected] http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users
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