SSA-1.1

[Almudena Velasco]

Hello Patrick,

If you remember I made a presentation proposing some minor changes that 
would make the SSAP extensible to light curves, in the last Interop in 
Nara. Here is a summary of them. The SVO propose to include them in this 
version or, preferably in the 1.2 version.

1. There is a way to define the Flux and Spectral Axis column names, but 
not for Time Axis column name if we deal with light curves in native 
format. So that, it would be necessary to add TimeAxis in the Dataset 
Metadata.

2. The SSAP defines a DatasetType value which is always “spectrum”. It 
would be necessary to have the possibility to set a “TimeSeries” type, 
as well as the new MIME types for light curves, for example; 
timeseries/fits.

3. The parameter Char.SpectralAxis.Coverage.Bounds.Extend could be set 
as recommended, same to the parameter
Char.TimeAxis.Coverage.Bounds.Extend , instead mandatory, as is now.

4. For the SDM, the field 'Data.SpectralAxis.Value” is set as mandatory 
while the TimeAxis.Value is optional. We think it could be changed to 
optional.

5. Also, we think that a way to identify time series services in the 
registry is needed. Nowadays, as you can see, if we search for SSAP 
services in the registry, we find the timeseries services mixed with 
spectrum services. The solution would be to add two SSAP subtypes, one 
for spectrum services and another for light curves services.


Regards,
Almudena Velasco
Spanish Virtual Observatory



El 14/03/11 17:32, Patrick Dowler escribió:
> The (hopefully) final draft of the minor revision SSA-1.1 has been uploaded to
> the twiki site:
>
> http://www.ivoa.net/cgi-bin/twiki/bin/view/IVOA/SSA_v1_1
>
> Anyone who implemented SSA-1.0 services or applications that interact with
> SSA-1.0 services should look it over and comment before the end of this month
> (March 2011).
>
> Note: This version only has minor bug fixes to the spec and no new
> functionality; new features and/or larger scale changes are to be considered
> in SSA-1.2 only.
>


-- 
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Almudena Velasco Trasmonte ( avelasco at cab.inta-csic.es )
Lab. de Astrofísica Espacial (www.laeff.cab.inta-csic.es)
European Space Astronomy Centre (ESAC)
Villafranca del Castillo - E-28691 Villanueva de la Cañada - Madrid - Spain
Tel.: 91 813 13 09  Fax.: 34 91 8131160
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