Hi Stas, +1 for the changes. I believe the reason is not only for the WKT representation, but also to follow the current publication practices of geodata out thre on the Web. Two examples in DBpedia and LinkedGeoData: - http://dbpedia.org/resource/Seattle with the geo:geometry property. - http://linkedgeodata.org/page/triplify/node29546940 with the property ogc:asWKT (http://linkedgeodata.org/page/geometry/node29546940)
I guess there are other properties in the Wikidata RDF dataset that just retrieve lat or long alone.
Best, Ghislain
El dom., 3 abr. 2016 a las 10:11, Stas Malyshev (smalyshev@wikimedia.org) escribió:
Hi!
We are committing a patch that implements a change in RDF format output, specifically how we output coordinates as WKT points.
If you do not use RDF format exports and specifically WKT coordinate literals there, this change has no effect for you.
When we first implemented it, we chose to make it "Point(latitude longitude)". Unfortunately, turns out the standard way in WKT is Point(longitude latitude) and that's how most of the tools that implement WKT format understand it. In general, geo-data formats are split on this question, see http://www.macwright.org/lonlat/. But WKT is pretty universally in lon-lat camp, so we have to follow the established practice.
As such, we are changing the WKT representation and we are bumping the format version (reported as schema:softwareVersion on RDF dumps/exports) from 0.0.1 to 0.0.2 so that the tools could adjust properly.
See more details in: https://phabricator.wikimedia.org/T130049
Thanks,
Stas Malyshev smalyshev@wikimedia.org
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