daniel added a comment.
@Christopher I don't see why we shouldn't use wikidata URIs as CRS identifiers. However, I agree that Q2 and Q111 are too unspecific to be used as a coordinate system. We would want to use something like Q11902211. This points out a problem in our use of the "reference globe" in the GlobeCoordinate data type: the intention was to specify the exact datum used. But in practice, this is often not known to the people who enter the coordinates, and not stated in their source either. Also, when querying by location, we typically want to filter by celestial body (earth, moon, mars, etc), not by coordinate system. I do not think we should use a different data type for non-earth coordinates. We would need to duplicate all coordinate properties (location-earth, location-mars, etc). We might however choose to allow the globe and the CRS to be specified separately in the GlobeCoordinate data value. That will make it even more difficult to represent the value meaningfully with a single literal for the simple mapping. TASK DETAIL https://phabricator.wikimedia.org/T129072 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: daniel Cc: daniel, Smalyshev, Christopher, Aklapper, debt, Gehel, D3r1ck01, FloNight, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Deskana, Manybubbles, Mbch331 _______________________________________________ Wikidata-bugs mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata-bugs
