Re: [thredds] Union of time-aggregated datasets

• To: Jon Blower <j.d.blower@xxxxxxxxxxxxx>
• Subject: Re: [thredds] Union of time-aggregated datasets
• From: Thomas LOUBRIEU <Thomas.Loubrieu@xxxxxxxxxx>
• Date: Tue, 06 Aug 2013 16:33:56 +0200

Hi Jon,

    <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
         <aggregation dimName="time" type="joinExisting">
            <variableAgg name="PSAL"/>
            <variableAgg name="PSAL_PCTVAR"/>
            <variableAgg name="TEMP"/>
            <variableAgg name="TEMP_PCTVAR"/>
            <netcdf coordValue="14624.0"><!-- timestep 1 -->
               <aggregation dimName="time" type="union">

                          coordValue="14624.0">
                     <variable name="PSAL_PCTVAR" orgName="PCTVAR"/>
                  </netcdf>

                          coordValue="14624.0">
                     <variable name="TEMP_PCTVAR" orgName="PCTVAR"/>
                  </netcdf>
               </aggregation>
            </netcdf>
            <netcdf coordValue="14655.0"><!-- timestep 2 -->
               <aggregation dimName="time" type="union">

                          coordValue="14655.0">
                     <variable name="PSAL_PCTVAR" orgName="PCTVAR"/>
                  </netcdf>

                          coordValue="14655.0">
                     <variable name="TEMP_PCTVAR" orgName="PCTVAR"/>
                  </netcdf>
               </aggregation>
            </netcdf>
            <netcdf coordValue="14683.0"><!-- timestep 3 -->
               <aggregation dimName="time" type="union">

                          coordValue="14683.0">
                     <variable name="PSAL_PCTVAR" orgName="PCTVAR"/>
                  </netcdf>

                          coordValue="14683.0">
                     <variable name="TEMP_PCTVAR" orgName="PCTVAR"/>
                  </netcdf>
               </aggregation>
            </netcdf>
...


cheers,

Thomas

On 08/06/2013 03:49 PM, Jon Blower wrote:

Hi,

I have a dataset consisting of 4 variables, each recorded on around 1000 
timesteps.  Unfortunately each variable and each timestep is provided as a 
separate NetCDF file, so I have about 4000 files.  Ideally I'd like to create a 
single dataset aggregating all of these variables and timesteps. How can I 
structure my THREDDS catalog to do this?

(It's not a forecast model so there are no overlapping times, so I'd like to 
avoid the FMRC aggregation type if possible.)

Cheers,
Jon

--
Dr Jon Blower
Technical Director, Reading e-Science Centre
School of Mathematical and Physical Sciences
University of Reading, UK
Tel: +44 (0)118 378 5213
Mob: +44 (0)7919 112687
http://www.resc.reading.ac.uk


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-------------------------------------------------------------
Thomas LOUBRIEU
IFREMER IDM/ISI
BP70
29280 Plouzane
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WWW  : http://www.coriolis.eu.org/cdc
Tel.:  (+33) (0)2 98 22 48 53
Fax:   (+33) (0)2 98 22 46 44

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• References:
  • [thredds] Union of time-aggregated datasets
    • From: Jon Blower