>> Is it sensible to have a polygon for the boundary and also a node that >> locates precisely the cultural/logical center? Does Nominatim ignore >> the node when there is a same-named boundary? Or is there some way to >> have a relation for a town that has both a polygon and a center? > > http://wiki.openstreetmap.org/wiki/Relation:boundary > > Apparently you can add a node to the relation with role admin_centre.
New version of nominatim supports both admin_centre and label relation members although it will also have a go at automatically merging them even if they are not explicitly tagged. The 'label' member will be merged (name and tags), relation tags win if there is a conflict. 'admin_centre' member will be merged only if the names and 'rank' (effectively admin_level / place=*) match, but other than that same rules. In both cases the node will also be added as the centre point of the polygon - i.e. the location that the map will centre on. This is a new property in the xml and json format and will be release with the new version. While doing this people may also wish to ensure that there is a wikipedia tag [1] which is now used as a basis to calculate relative importance of admin features. Adding this makes the ordering of results far better. -- Brian [1] http://wiki.openstreetmap.org/wiki/Wikipedia _______________________________________________ Talk-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-us
