The Napkin Representation

Brad Cavanagh b.cavanagh at jach.hawaii.edu
Mon Jul 2 14:29:01 PDT 2007


On Mon, 2 Jul 2007, Alasdair Allan wrote:

> or alternatively like this,
>
> <TimeSeries type="delta_t">
>  <Meta>
>     <Param name="first" value="2007-07-01T21:44:00+0000" ucd="time.epoch;"
>  units="iso8601" />
>  </Meta>
>  <Data>
>     <Row number="1">
>        <Time units="s" uncertainty="0.5">0/Time>
>        <Flux type="mag" band="R" uncertainty="0.01">13.2</Flux>
>     </Row>
>     <Row number="2">
>        <Time units="s" uncertainty="0.5">35/Time>
>        <Flux type="mag" band="R" uncertainty="0.01">13.3</Flux>
>     </Row>
>       .
>       .
>       .
> </Data>
> </TimeSeries>

Would a more compact version like this work?

<TimeSeries type="delta_t">
   <Meta>
     <Param name="first" value="2007-07-01T21:44:00+0000" ucd="time.epoch;" 
units="iso8601" />
     <Time units="s" uncertainty="0.5" />
     <Flux type="mag" band="R" uncertainty="0.01" />
   </Meta>
   <Data>
     <Row number="1">
       <Time>0</Time>
       <Flux>13.2</Flux>
     </Row>
     <Row number="2">
       <Time>1</Time>
       <Flux>13.3</Flux>
     </Row>
      .
      .
      .
   </Data>
</TimeSeries>

...i.e. set up default Time/Flux metainfo that would apply to all 
Time/Flux values in the Data section, allowing them to be overridden 
through explicit values in the Time/Flux sections in Al's quoted example?

(of course, I still don't see why a VOTable wouldn't work, but that was my 
chief objection at the HTN/VOEvent meeting where The Napkin was wrote 
upon, blessing us all with The Napkin Representation, but hey... :-) )

Cheers,
  Brad.



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