Re: [talk-ch] Nominatim: Bezirk Rheinfelden

Hi Andrew,

[Nominatim is not accurate]

Does anybody know how to fix this?

Short Answer:

Get the boundaries and import them. (cf. Zurich and its imported boundaries.)

Long Answer:

At the moment the districts of mosts cantons are only represented as a node in OSM. Thus Nominatim has to use some obscure[*] algorithms to guess its area. That may work for streets (which is the nearest village-node?) but not so good for districts.

A help for Nominatim could be the is_in-Key, but even if all is_in's are set, Nominatim still uses other sources to determine the 'correct' district.

Regards, Thomas

[*] I think the source is available somewhere..