[OSM-talk] Adding Wikidata tags to 70k items automatically

[Edward Betts]

Janko Mihelić <janjko at gmail.com> wrote:
> There's one fundamental question about wikidata tags; how do you tag
> multiple objects that have the same wikidata tag? For example, a wikidata
> entry about a church and a connected monastery. When I was writing the
> Wikidata proposal on our wiki, I've put a rule that only one object in OSM
> can have the same wikidata=* tag. So when there are more ways in OSM that
> represent one element in Wikidata, we should put them in a relation and put
> the wikidata tag in the relation.
> 
> Since then I changed my opinion a bit, but I'm not sure if we should just
> put wikidata=* on all ways, or if we should invent a new tag,
> wikidata:part=* and put that tag on all the objects.

For now I've side stepped this problem. If you look at an institution like a
hospital, university or school you'll often find multiple buildings, some
might include a name and be tagged amenity=hospital/university/school. If my
code spots two or more nearby items with the correct tags and matching names
it skips them, so I don't have to deal with multiple OSM items having the same
wikidata tag.

I can also detect if there are two nearby items with the same name but
different tagging. I found an article on Wikipedia that was in the categories
for bridge and monument. In OSM we have a 'way' to represent the bridge and a
'node' in the middle of the bridge for the monument. I skip these as well,
there are just over 200 of them.
-- 
Edward.