heres my try, adding st_collect() per mark given a Table of POINT, geometry field geom_pts, chars feature_code
select st_convexhull( st_collect( e.geom_pts) ) from (select * from gectable g where g.feature_code = 'MT') as e doesn't work.. ERROR: function st_collect(geometry) does not exist ?? -Brian _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
