I used the following query to make a buffer of 1m iutward to a convexull created by union of a set of polygons. But it gives an error.Why?
SELECT ST_As_Text(ST_Buffer (foo.the_geom, 1)) from (select (ST_ConvexHull(ST_Union(the_geom))) from building_poly) As foo; Sanjjewa
_______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
