hello. i'm using postgis 1.3 i had some problematic polygons in the same feature class: some with ... NOTICE: Self-intersection at or near point ... some with ... NOTICE: Ring Self-intersection at or near point ...
I ran poor man's fixing for self-intersections, as you know: update ... set the_geom = st_buffer(the_geom,0) The question is: if i check geometry validation with isvalid(the_geom) after updating, no records are found. Why? The ring self-intersection is still there but does not raise notice now. Second question: Why postgis have sometimes problems running an intersection and sometimes not? For example I can normally execute st_intersects and st_intersection with these invalid features (before updating). But maybe with ohter feature classes it would be in trobules. Maybe the borders? (no borders are intersecting the "ring-self intersection" problematic zone) Thanks toni _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
