Generic FIELD/PARAM metadata items in VOTable

[Molinaro, Marco]

Il giorno ven 19 mag 2023 alle ore 10:48 Mark Taylor <
m.b.taylor at bristol.ac.uk> ha scritto:

> On Fri, 19 May 2023, Molinaro, Marco wrote:
>
> > I'm wondering how or whether the key/value, or
> > property/content, would be advertised to the client
> > or documented.
> > Or would this be to allow custom or dedicated
> > server-client interaction only?
>
> Not all clients would be interested in this information, and they
> could certainly ignore it harmlessly.  In the case of STIL its
> internal table model has space for miscellaneous per-column metadata,
> and this would show up in topcat for instance as an additional
> displayed column the Columns Window alongside units, UCD and the rest,
> for each key that's present in any of the columns
> (http://www.starlink.ac.uk/topcat/sun253/ColumnInfoWindow.html).
>
> In other cases clients might go looking for specific items and
> make use of them as appropriate, but I'd expect the documentation
> for such items would exist outside of VOTable, for instance
> in other standards or in service-specific documentation.
>
> The option to include miscellaneous per-column metadata is already
> present in other formats like ECSV, IPAC and arguably FITS, and
> I guess clients have already figured out how to treat, or ignore,
> those items as they wish.
>

OK, so it's the way towards a richer responseformat.
Good, thanks Mark!

Marco



>
> Mark
>
> --
> Mark Taylor  Astronomical Programmer  Physics, Bristol University, UK
> m.b.taylor at bristol.ac.uk          https://www.star.bristol.ac.uk/mbt/
>


-- 
Marco Molinaro
INAF - Istituto Nazionale di AstroFisica
Osservatorio Astronomico di Trieste
email marco.molinaro at inaf.it
tel. [+39] 333 33 20 564 [also Telegram]
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