Re: [netcdf-java] Problem with aggregation by longitude dimension

Dear Yolanda,

From the ncml doc you can read

http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/AnnotatedSchema4.html
The /forecastModelRunCollection, forecastModelRunSingleCollection, joinExisting /and/joinNew/ aggregation types are called */outer aggregations/* because they work on the outer (first) dimension.

Therefore, looking at your data you can aggregate using the time (outer) dimension but not the lon (inner)dimension.

For the tiled aggregation, I don't have yet an answer.

Regards

Antonio




--
Antonio S. Cofiño
Grupo de Meteorología de Santander
Dep. de Matemática Aplicada y
        Ciencias de la Computación
Universidad de Cantabria
Escuela de Caminos
Avenida de los Castros, 44
39005 Santander, Spain
Tel: (+34) 942 20 1731
Fax: (+34) 942 20 1703
http://www.meteo.unican.es
mailto:antonio.cofino@xxxxxxxxx


El 04/04/2012 10:30, Yolanda Sagarminaga escribió:
Hello,

I have a problem with aggregation by longitude dimension of two netcdf files:

The first one ranges from -35 to 0 (originally from 350 to 360, but I changed 
it) and the second one from 0 to 25

The HTML Access to files and aggregations is in:

http://oceandata.azti.es:8080/thredds/MONTHLY_SEAWIFS_9km.html





My aggregation ncml code is below, I already did an joinexisting aggregation by 
latitude with other datasets with success, but I cannot make it work this one: 
I don't know if the error comes from longitude units, from files or from 
aggregation. Someone could help me?





<dataset name="JOINEXISTING AGGREGATION" ID="Agg2.nc" urlPath="Agg2.nc">

   <serviceName>allServices</serviceName>

   <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>

     <aggregation dimName="lon" type="joinExisting">

                 <netcdf 
location="file:/media/HIST_DATA/SEAWIFS_MONTHLY_9km_BB/monthly_E.nc" />

                 <netcdf 
location="file:/media/HIST_DATA/SEAWIFS_MONTHLY_9km_BB/monthly_Wx.nc" />

                 <!--<scan location="/media/HIST_DATA/SEAWIFS_MONTHLY_9km_BB/" suffix=".nc" 
subdirs="false"/>-->

      </aggregation>

   </netcdf>

</dataset>



In case of I also tried the tiled aggregation without success....



<dataset name="TILED AGGREGATION" ID="Agg.nc" urlPath="Agg.nc">

   <serviceName>allServices</serviceName>

   <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>

         <aggregation dimName="lon" type="tiled">

                 <netcdf 
location="file:/media/HIST_DATA/SEAWIFS_MONTHLY_9km_BB/monthly_E.nc" />

                 <netcdf 
location="file:/media/HIST_DATA/SEAWIFS_MONTHLY_9km_BB/monthly_Wx.nc" />

         </aggregation>

     </netcdf>

</dataset>





Yolanda Sagarminaga Investigador Principal Principal Investigator
Área y Unidad de investigación
Area and Research Division

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