Re: [netcdf-java] Variable "values" within NcML Structure

• To: Doug Lindholm <doug.lindholm@xxxxxxxxxxxxxxxxx>
• Subject: Re: [netcdf-java] Variable "values" within NcML Structure
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Wed, 19 Nov 2008 15:56:30 -0700

Thanks Doug, this is probably a bug, ill try to reproduce it.


Doug Lindholm wrote:
> Hi,
> 
> I'm trying to define the "values" in a "variable" that is within a 
> "structure" type "variable". When I try to read them, I get:
> 
> java.lang.NullPointerException
>       at ucar.nc2.dataset.NetcdfDataset.readMemberData(NetcdfDataset.java:961)
>       at ucar.nc2.Variable._readMemberData(Variable.java:931)
>       at ucar.nc2.dataset.VariableDS._readMemberData(VariableDS.java:302)
>       at ucar.nc2.Variable.readMemberOfStructureFlatten(Variable.java:659)
>       at ucar.nc2.Variable.read(Variable.java:635)
> 
> It looks like it is trying to delegate the reading to "orgFile" which is 
> apparently null. My NcML has no referenced dataset. I am using 
> "explicit". The reading of values works fine in a top level variable.
> 
> I'm using toolsUI-2.2.20.jar.
> 
> The key bits of my NcML look like:
> 
>      <variable name="time" type="double">
>          <values start="0.0" increment="3600000.0"/>
>      </variable>
> 
>      <variable name = "spectrum" type="structure">
>          <variable name="frequency" type="double">
>              <values start="0.0" increment="10.0"/>
>          </variable>
>          <variable name="value" type="double">
>          </variable>
>      </variable>
> 
> 
> Thanks,
> Doug
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• References:
  • [netcdf-java] Variable "values" within NcML Structure
    • From: Doug Lindholm