On 18 July 2012 09:46, Mike Toews <mwto...@gmail.com> wrote: > with data as (select 'POLYGON((0 0, 1 0, 1 1, 0 1, 0 0))'::geometry AS geom1, > 'POLYGON((0 0, 1 0, 1 1, 0 1, 0 0, 1 0, 1 1, 0 1, 0 0))'::geometry AS geom2) > select st_isvalid(geom1), st_area(geom1), > st_isvalid(geom2), st_area(geom2) > from data;
Hmm, on further analysis, valid geometries shouldn't matter as much for ST_Intersection: with data as (select 'POLYGON((0 0, 1 0, 1 1, 0 1, 0 0))'::geometry AS geom1, 'POLYGON((0 0, 1 0, 1 1, 0 1, 0 0, 1 0, 1 1, 0 1, 0 0))'::geometry AS geom2) select st_isvalid(st_intersection(geom1, geom1)), st_area(st_intersection(geom1, geom1)) from data; -MIke _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
