Expressing 2- and 3-D coordinates

[Francois Bonnarel]

Hi all,
  I didn't take part to the discussion last week (starting reading it when it
was nearly over - typical time scale problem for me ;-) ), but I am
strongly in favor of Arnold's compromise. For me the point is
not only that lists are presently not supported but that spatial
coordinates play really a slightly different role. (at least in the
case of RA and DEC, mais be different for a X,Y,Z frame for interplanetary
medium description) . Building the Characterization model which maakes reuse of STC
components we faced this list syntax problems monthes ago to build our 
utypes and I was in favor of this splitting out. I am glad to see that
VOEvent people have shared the same concerns, and I would like to thank 
Armold for the effort. By the Way I have nothing using lists in XML in general
of course, as was allready pointed out by other people even VOTable allows arrays
of values...

Best regards to all
François

>From: Rob Seaman <seaman at noao.edu>
>Subject: Re: Expressing 2- and 3-D coordinates
>Date: Mon, 19 Dec 2005 16:55:38 -0700
>To: dm at ivoa.net
>X-Scanned-By: MIMEDefang 2.35
>
>On Dec 19, 2005, at 2:27 PM, Arnold Rots wrote:
>
>< STC for the time being converts to enumerating the vector  
>< components as in my first message, and may change back to list  
>< types when list support is firmly there.  [...[  The STC schemata  
>< will be adapted accordingly.
>
>That seems like a good compromise to me.  The question remains  
>whether there is a consensus from all parties in support of this.   
>This isn't the best time of year to promote efficient communication,  
>but folks should comment if they are either in strong support or  
>strong disagreement.  Those who are in the fuzzy middle are either  
>more interested in seeing a consensus than in what that consensus  
>might be (like me) - or else simply don't care much either way.
>
>Thanks to Arnold for remaining flexible and patient.
>
>Rob
>

=====================================================================
Francois   Bonnarel               Observatoire Astronomique de Strasbourg
CDS (Centre de donnees          11, rue de l'Universite
astronomiques de Strasbourg)    F--67000 Strasbourg (France)

Tel: +33-(0)3 90 24 24 11       WWW: http://cdsweb.u-strasbg.fr/people/fb.html
Fax: +33-(0)3 90 24 24 25       E-mail: bonnarel at astro.u-strasbg.fr
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