[talk-ch] Fwd: [OSM-talk-fr] OSM et Wikidata

Charles Andres charles.andres.wmch at gmail.com
Sat May 10 11:58:27 CEST 2014


One if the many outcomes of the Hackathon in Zurich this week end.

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[Maps-l] WP-geocoordinates filter by using Wikidata classes

Tim Alder tim at alder-digital.de 
Fri May 9 22:01:39 UTC 2014
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Hello, I'm glad to can announce my last experiment to work with Wikidata and Wikipedia-coordinates: http://tools.wmflabs.org/wp-world/wikidata/superclasses.php?lang=en This list shows how many objects we have in different classes and provide links to maps with only this specific class. I think it's much more useful than in the past where 80% of our coordinates were simply a "landmark". To create this tool I used properties "is instance of"[1] and "is subclass of"[2]. To extract this properties it was necessary to use "Wikidata Query". Now all classes, where an object is a member, are in a numerical array-element in the database. So with an index on this array it should have a good performances. Next steps are to try to bring more order inside this list and support the community to create more "is instance of"-entries in Wikidata. (Only 30% off all objects have such an entry). Greetings from Switzerland Kolossos [1]https://www.wikidata.org/wiki/Property:P31 [2]https://www.wikidata.org/wiki/Property:P279
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