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. On Jul 1, 2016 11:15, "Simone Cortesi" simone@cortesi.com wrote:
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