<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Pat, Francois, Petr,<div class=""><br class=""></div><div class="">Thanks for your comments and responses. </div><div class=""><br class=""></div><div class="">Pat, content_type (the first field I looked into) tells you about the format but not about the actual content. At least this is what I understood.</div><div class="">This is why I point to the ”semantics" field and adding a vocabulary without having to add an extra column for that. </div><div class=""><br class=""></div><div class="">Francois, Associateddata=timeseries-images,… something like that could work. </div><div class=""><br class=""></div><div class="">Petr, Francois is right in his comment as to what I refer to. </div><div class="">I thought about the ucd usage of it, perhaps this is something to look into. </div><div class=""><br class=""></div><div class="">I guess the options/questions are: </div><div class="">1) add a column for that and add a vocabulary </div><div class="">2) use the field semantics and have a controlled </div><div class=""><br class=""></div><div class="">In both cases it points to a vocabulary, and I would vote for 2 in principle since it looks like it would require less effort. </div><div class=""><br class=""></div><div class="">Cheers,</div><div class="">Ada</div><div><br class=""><blockquote type="cite" class=""><div class="">On 12 Oct 2019, at 09:16, François Bonnarel <<a href="mailto:francois.bonnarel@astro.unistra.fr" class="">francois.bonnarel@astro.unistra.fr</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div text="#000000" bgcolor="#FFFFFF" class=""><p class="">Hi Petr<br class="">
</p>
<br class="">
<div class="moz-cite-prefix">Le 12/10/2019 à 01:14, Petr Skoda a
écrit :<br class="">
</div>
<blockquote type="cite" cite="mid:alpine.DEB.2.20.1910120107050.32533@pollux.stel" class="">
<br class="">
<blockquote type="cite" class="">The term timeseries would not be enough by
itself to know what the content of datalink is since it could be
light curves (tabular data), images or spectra. These are the
most common cases, and I would like to propose a common usage,
e.g.:
<br class="">
<br class="">
timeseries-lightcurve
<br class="">
timeseries-radialvelocities
<br class="">
timeseries-spectra
<br class="">
timeseries-images
<br class="">
</blockquote>
<br class="">
timeseries of images is in fact what we are presenting in our
model in Fig.~13 - to every point of a light curve is associated
the link to original image (here we were thinking about placing
the provenenace )
<br class="">
<br class="">
so the time series of images is just a normal time series (where
another "axis" paralel with e.g. flux is an axis of mappings
(links to images)
<br class="">
<br class="">
As I have shown in Sydney 2015, the SPLAT , TOPCAT and ALADIN
understand this well and (Fig.15 in a note) displays the image. We
can even support cutouts ...
<br class="">
</blockquote>
<br class="">
But the point raised by Ada was not to address the case where you
want to modelize this but more simply the case where you want to
attach a timeSeries dataset to a source in a catalog (GAIA use case)<br class="">
USING DAtaLInk<br class="">
<br class="">
Indeed, this is a vocabulary evolution problem. There is a proposal
to extend DataLink vocabulary (semantics field) see (<a class="moz-txt-link-freetext" href="https://wiki.ivoa.net/twiki/bin/view/IVOA/UpdateDatalinkTerms">https://wiki.ivoa.net/twiki/bin/view/IVOA/UpdateDatalinkTerms)</a>
<br class="">
<br class="">
<br class="">
We should extend this a little bit in the direction proposed by Ada<br class="">
<br class="">
Semantics working group will manage the procedure.<br class="">
<br class="">
Cheers<br class="">
François<br class="">
<blockquote type="cite" cite="mid:alpine.DEB.2.20.1910120107050.32533@pollux.stel" class="">
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<br class="">
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<blockquote type="cite" class="">
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Opinions or comments? Does this make sense to you?
<br class="">
<br class="">
Ada
<br class="">
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</blockquote>
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361 *
<br class="">
* Stelarni oddeleni (323)
620361 *
<br class="">
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620250 *
<br class="">
* 251 65 Ondrejov e-mail:
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* Ceska
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</blockquote>
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