UCD stat quantities P/S question

[Mireille Louys]

Hi Mark ,

Thanks for pointing this error.

Yes all these terms should be used similarly and have a S status

explaining the secondary position in the UCD strings.

Sorry for that.

Mireille


Le 20/07/2016 à 13:38, Mark Taylor a écrit :
> Dear semantics,
>
> I have a question about some of the stat.* UCDs.
>
> I see in the UCDlist document:
>
>     S | stat.max
>     S | stat.mean
>     S | stat.median
>     S | stat.min
>
> but
>
>     P | stat.stdev
>     P | stat.variance
>
> Why are max/min/mean/median designated as Secondary but
> stdev and variance as Primary?  I can imagine wanting to use,
> e.g. both
>
>     pos.parallax;stat.mean
>
> and
>
>     pos.parallax;stat.stdev
>
> but the second is apparently not allowed.
> I was expecting all of these to be marked S or maybe Q.
>
> Thanks for enlightenment,
>
> Mark
>
> --
> Mark Taylor   Astronomical Programmer   Physics, Bristol University, UK
> m.b.taylor at bris.ac.uk +44-117-9288776  http://www.star.bris.ac.uk/~mbt/