Re: UCDs in SpectrumDM

From: Andrea Preite Martinez <andrea.preitemartinez-at-iasf-roma.inaf.it>
Date: Sat, 23 Jun 2007 22:19:31 +0200


Jonathan,

as you have the right to say:

> I guess I don't feel that
> phot.flux.density;em.wl,stat.max
> (and similar) are 'cumbersome' - I find them much easier
> to understand than extra custom-crafted UCDs like ..perWave.

> I guess I would like a reason based on the standard that it's not right,
> rather than just 'Andrea doesn't like it'...

I think I have the same right to say what I said: that, although perfectly legal, I see the risk of building a cumbersome expression if one adds other qualifiers/modifiers.

> I'm a bit concerned that you give me all this input now
> at/after the end of the RFC period, we were hoping to get approval
> for Spectrum
> at the July 15 exec - if we need to add all these new UCDs, does this
> mean we have to wait for a new update to the words list to be approved
> before Spectrum can go to approval? (Plus, of course, the time required
> for all the implementers to change their implementation, since
> we've published
> essentially the current list of Spectrum UCDs over a year ago and
> everyone is using
> them - this mostly is important for the Flux.Value cases).
>

No, my personal point of view is that the DM WG does not have to wait for a new update to the word list. Remember that the present version of the doc (at pag.23) already proposes some (+ the change of role of pos.eq, not yet standard!).
I don't se why the EXEC should not approve a Rec proposing some modifications/additions to the current version of another standard: btw, they are going to approve Search-by-Cone, where old UCD1 are still used, based on a motivation similar to what you are expressing above (implementers should change their implementations).

> I hope other sci-ucd members will comment.
I agree with you!

Andrea


Andrea Preite Martinez                 andrea.preitemartinez-at-iasf-roma.inaf.it
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Received on 2007-06-23Z20:19:48