Re: [netcdf-java] [Q] Adding new (or overwriting existing) variables from a different file in NcML?

• To: "H. Joe Lee" <hyoklee@xxxxxxxxxxxx>
• Subject: Re: [netcdf-java] [Q] Adding new (or overwriting existing) variables from a different file in NcML?
• From: "Antonio S. Cofiño" <antonio.cofino@xxxxxxxxx>
• Date: Wed, 14 Aug 2013 14:09:59 +0200

The Union aggregation is doing that for you

<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
 <aggregation type="union">
   <netcdf location="data.nc"/>
   <netcdf location="geo.nc"/>
 </aggregation>
</netcdf>

more doc on this:
http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/Aggregation.html#Union

regards

Antonio

--
Antonio S. Cofiño
Grupo de Meteorología de Santander
Dep. de Matemática Aplicada y
       Ciencias de la Computación
Universidad de Cantabria
http://www.meteo.unican.es


El miércoles, 14 de agosto de 2013 6:26:34, H. Joe Lee escribió:

Hi,

  I'm wondering if the following composition is possible in NcML. I
read tutorial on the web but I could not find a solution yet.

Let's assume that data.nc has no coordinate variables but geo.nc has.
I'd like to create a data.ncml like below to import coordinate
variables from a separate NetCDF file (i.e., geo.nc) so that I can
visualize data variables in data.nc with IDV by opening data.ncml.

<netcdf location="data.nc">
   <!-- import geo-location data from external file.  -->
   <variable name="Latitude" location="geo.nc">
   <variable name="Longitude" location="geo.nc">
</netcdf>

Is the above scenario possible with NcML via netcdf-java?
If so, what NcML tag & attribute should I use to import variables from
external files?

Regards,

--
HDF: Software that Powers Science

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