st_extent for a minimal bounding box st_convexhull for a hull
On Sat, Apr 5, 2008 at 1:08 PM, Paul Tomblin <[EMAIL PROTECTED]> wrote: > I have a table with a point column. Is there a way to find the boundary or > convex hull of some of the entries in that table? For instance, if I want > to find the extents of each country in the table, can I say > insert into country_extents (country, geom) values (select country, > ST_XXX(point) from waypoint group by country)); > > -- > Paul Tomblin <[EMAIL PROTECTED]> http://blog.xcski.com/ > "I'm cruising down the Information Superhighway in high gear, surfing the > waves of the Digital Ocean, exploring the uncharted regions of Cyberspace. > Actually I'm sitting on my butt staring at a computer screen." > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
