Thanks for this work - it's fascinating to see the huge gaps in the
data and I was wondering if maybe this reflects the work of lots of
individuals who have input those properties by hand, or whether some
people have enabled clever bots for their regions that other regions
could reuse? (hopefully)

I can see at a glance in the case of the Netherlands that not all
objects in the subclass lists that are in the English (or Dutch!)
Wikipedia with geo-coordinates are in the overlay maps, so I was
wondering how the data got in there. I was also interested to see some
slight incorrections in the coordinates for certain subclasses
(probably based on some older geocoordinate conversion software for
some specific database).


2014-05-10 10:19 GMT+02:00, Tim Alder <t...@alder-digital.de>:
> Hello,
> I'm glad to can announce my last experiment working 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". Now we have maps full with roller
> coaster or with museums.
> 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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