Using this query : http://nominatim.openstreetmap.org/reverse?format=xml&osm_type=N&osm_id=1914299432&accept-language=fr I retrieve no informations and I can't understand why. I looking for data for every station of this relation, only two return nothing : the one I gave above and the same station in the opposite direction. asked 11 Jun '14, 18:53  Kyro |
One Answer:
I looked at the node above. Then at the first three nodes of Relation: A : Fontaine => Echirolles (2396015). Those three all have the tag railway=tram_stop. For the node that doesn't give results this tag was removed. Can this be the cause? answered 11 Jun '14, 19:07  cartinus |
Yep, that does it. Any idea why ?
Once upon a time Openstreetmap contained a lot less data. People mapped a whole tram stop with a single node with the tag
railway=tram_stop. The dual rail line would at that time probably be mapped with a single way. So a node with the tagrailway=tram_stopwas a point of interest (POI).Over time we started mapping more and more detail. First the single way would become two ways, so there would also be two tram stops. Then we started adding the platforms. And lastly some people invented a relation to tie it all together.
Nominatim can't index all objects in the world, so only "interesting" objects are indexed. If you search for Echirolles Gare, you'll see that the platforms are indexed (because that is where you actually go to wait for the tram) and the tram stop is indexed (because in the past that was the whole POI). The stop position of the tram is however not very interesting for a lot of people and applications. Besides it is always very near the platform.