Identifying STC-S footprints in SIA

[Thomas Boch]

Hi Tom,

This discussion sounds familiar to me, the issue was raised one year 
ago, cf. http://www.ivoa.net/pipermail/dal/2012-January/006315.html
AFAIK, no definitive consensus was reached.

I found the following different possibilities in SIAP services 
outputting STC-S footprints :
<FIELD name="position_bounds" unit="deg" xtype="adql:REGION" 
datatype="char" arraysize="*">
or
<FIELD name="stcs" datatype="char" arraysize="*" 
ucd="phys.area;obs.field" unit="deg">
or
<FIELD ID="regionSTCS" name="regionSTCS" datatype="char" arraysize="*">

Cheers,
Thomas

Le 20/02/13 18:22, Tom Donaldson a écrit :
> Hi All,
>
> Specifying image footprints using STC-S expressions, like the Chandra example below, has proven useful in a number of circumstances.
>
> Polygon J2000 40.57783 0.08684 40.57783 0.08048 40.66467 -0.02850 40.67115 -0.02850 40.67116 -0.02850 40.68450 -0.01787 40.68450 -0.01786 40.68450 -0.01151 40.59767 0.09748 40.59118 0.09748 40.59117 0.09747 40.57784 0.08685
>
> I was wondering if there is consensus on what UType/UCD combination should be used for such FIELDs in an SIA result.  As a provider, I'd like to use the latest/best recommendation.
>
>  From the consumer's point of view, does anyone have insight on whether there is perhaps a small array of possibilities I should look for, based on precedent or current provider behavior?
>
> Thanks!
> Tom
>


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Thomas Boch
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