Re: [netcdf-java] joinExisting aggregation

• To: netcdf-java@xxxxxxxxxxxxxxxx
• Subject: Re: [netcdf-java] joinExisting aggregation
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Fri, 07 Jun 2013 15:18:18 -0600

Hi Eli:

John

On 6/7/2013 2:31 PM, Eli Hunter wrote:

Hello,

I'm trying to aggregate a set on Netcdf files and have run into a
problem. The dimension I am trying to aggregate over is called datum,
but there is no datum variable, just a number of variables with
dimension datum. So I get an error like:

no coordinate variable for agg dimension= datum


My understanding is that I can create a variable datum using NCML in
this way:

<?xml version="1.0" encoding="UTF-8"?>
          <netcdf
xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
          <variable name="datum" shape="datum" type="int">
             <values start="0" increment="1" />
         </variable>
         <aggregation dimName="datum" type="joinExisting"
recheckEvery="15 min">
                <scan location="." suffix=".nc" />
          </aggregation>
  </netcdf>

But I continue to get the same error, as if no new variable is created.
Perhaps I am unable to use this method with the scan object? Or must the
dimension and variable be called "time".

Any insight would be appreciated.

Thanks,
Eli

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• References:
  • [netcdf-java] joinExisting aggregation
    • From: Eli Hunter