That functionality doesn't exists in TDS. You will need to postprocess the
files, or use F-TDS (Ferret TDS) to accomplish:
http://ferret.pmel.noaa.gov/LAS/documentation/the-ferret-thredds-data-server-f-tds/
---------
Kyle Wilcox, Engineer
Applied Science Associates
55 Village Square Drive
South Kingstown, RI 02879
p: (401) 789-6224
e: kwilcox@xxxxxxxxxxxxxx
> -----Original Message-----
> From: thredds-bounces@xxxxxxxxxxxxxxxx [mailto:thredds-
> bounces@xxxxxxxxxxxxxxxx] On Behalf Of Ivan PRICE
> Sent: Friday, April 01, 2011 11:14 AM
> To: thredds@xxxxxxxxxxxxxxxx
> Subject: [thredds] aggregation / arithmetic between variables
>
>
> Hi again,
>
> I'm sorry to ask so many questions, i am looking around before asking
> these..
>
> My next problem is that I'd like to define a 'virtual variable' that is
> the result of simple operations on existing variables, for example a
> new
> variable that is the sum of 2 existing ones.
>
> I have read all about aggregating between datasets and over dimensions
> such as time, but i think this is different. My goal is to have a
> virtual WMS layer that is the result of the relationship between
> existing variables.
>
> Does this sort of functionality exist at this stage, or should i be
> pre-processing the dataset before the thredds stage ?
>
> cheers and have great weekends
>
> -i
>
>
>
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