<div dir="ltr"><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The semantics column in DataLink is supposed to clarify the relationship of the linked item with the thing with the specified ID -- so it doesn't necessarily tell you what the resource *is* but rather how it is related. There are cases where it looks like semantics says what something is: preview sounds like it is saying "this is a preview" but it is really saying "this is a preview of the #this resource".</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"></div><div class="gmail_default" style="font-size:small">Currently, only the contentType tells you something about what the download is and that is admittedly not conveying this kind of detail. It could, or another (new) column could... we should discuss a detailed example. <br></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div>--<br></div><div>Patrick Dowler<br></div>Canadian Astronomy Data Centre<br></div>Victoria, BC, Canada<br></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 11 Oct 2019 at 08:59, NEBOT GOMEZ-MORAN Ada (OBS) <<a href="mailto:ada.nebot@astro.unistra.fr">ada.nebot@astro.unistra.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi All, <br>
<br>
Following the DAL session this afternoon we need a specification to know the content of datalink. <br>
<br>
Having a look at it it looks like the field “semantics” is the place? <br>
<br>
This is important for time series data, which is distributed via datalink more and more often. <br>
<br>
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>
<br>
timeseries-lightcurve<br>
timeseries-radialvelocities<br>
timeseries-spectra<br>
timeseries-images<br>
<br>
Opinions or comments? Does this make sense to you?<br>
<br>
Ada<br>
</blockquote></div>