Simone, I think it was a mistake to add P402 to wikidata. From what I have been told, OSM IDs change too frequently to be reliable, e.g when user edits a road and splits some part of it with a different subset of tags. (Haven't tested it myself)
The reverse tagging is by far more valuable, but at the moment OSM editor does not make it easy -- there is no lookup or autocomplete when entering wikidata ID, and when entered, it shows as a number, not as text from wikidata label.
Hi Yuri,
thanks for the effort.
where do the shapes come from? are they sourced from the WMF instance
of OSM data?
I am wondering if adding P402 (OpenStreetMap Relation identifier) to
wikidata is worth doing. I've been doing it on some italian
municipalities: https://www.wikidata.org/wiki/Q103049
-Simone
On Fri, Jul 1, 2016 at 5:38 AM, Yuri Astrakhan <yastrakhan@wikimedia.org> wrote:
> This week we enabled geo-shapes service (non-production only). Given
> Wikidata ID(s), maps service can give you associated geoshapes (as
> topojson). Moreover, you can actually give it a Wikidata SPARQL query, and
> as long as each ID is unique, it will get geoshapes for each one, and keep
> other values as TopoJSON properties.
>
> What this means is that once its in production, you can do this:
> http://data.wmflabs.org/wiki/Regional_maps
>
> It's a bunch of maps (using graph extension), that are dynamically generated
> by a template! You just give it a country and a few more optional
> parameters, and it draws the regions, and can show images from Commons if
> you hover over the state capitals (black dots).
>
> Next step - adding some interesting data on top of those maps, like election
> results or rates of air pollution. That data will hopefully be stored in a
> central repository, together with non-OSM geoshapes (like historical country
> outlines, bird migration paths, etc).
>
> _______________________________________________
> Maps-l mailing list
> Maps-l@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/maps-l
>
--
-S