Uh, I leave the details to someone who knows better :) - it is a while
since I checked, and it might indeed be underspecified right now.

To the best of my knowledge, there is only one widely used coordinate
system for each Mars and Titan. I might be wrong. But in the worst case we
would need to specify the default system for either.

I am not saying that the whole thing is not a problem - I am just saying
that the data model, as spec'ed and implemented, has a space for solving
it. It is obvious that without support in the UI the whole thing is
slightly moot anyway.

On Fri, Oct 7, 2016 at 2:23 PM Jan Macura <macura...@gmail.com> wrote:

> 2016-10-07 20:34 GMT+02:00 Denny Vrandečić <vrande...@gmail.com>:
> Wikidata allows to set a coordinate system - it is called a globe or
> coordinate system - on every coordinate. This would be the natural place to
> specify whether it is WGS84 or GDA94 or another system. Most of them are
> Q2, which, as per data model, is indeed WGS84
> Hi Denny,
> can you be more specific about this? So when there is no explicit value in
> the *globe* parametre of GlobeCoordinate, then it is treated as Q2 (this
> corelates with the dumps and every RDF serialization)? It would imply
> geographic coordinates (not the same as WGS84!!). Or is it considered to be
> specifically WGS84, which is Q11902211?
> And how you tell the coordinate system for other celestial bodies like
> Q111 (Mars) or Q2565 (Titan)?
> Thanks a lot
>  Jan
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