On Mon, Aug 2, 2010 at 7:13 PM, Ben Supnik <[email protected]> wrote: > Hi Y'all, > > Does anyone have a good set of heuristics for the cases where OSM-reading > software should treat outer-way attributes as applying to a multipolygon?
>From a practical point of view, you can use the same heuristic as osm2pgsql does for the mapnik map renderings. http://trac.openstreetmap.org/browser/applications/utils/export/osm2pgsql/output-pgsql.c#L966 970 /* Copy the tags from the outer way(s) if the relation is untagged */ 971 /* or if there is just a name tag, people seem to like naming relations */ 972 if (!listHasData(&tags) || ((countList(&tags)==1) && getItem(&tags, "name"))) { I've no idea how "theoretically correct" it might be, but it's used fairly heavily across many projects! Cheers, Andy _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
