Re: NullPointerException during aggregation

  • Subject: Re: NullPointerException during aggregation
  • From: John Caron <caron@xxxxxxxxxxxxxxxx>
  • Date: Fri, 03 Nov 2006 10:23:49 -0700
Hi Jon:

Can you check if you get the same error in the latest 2.2.17 release?
I have fixed some bugs in aggregation, but im not sure if thats one of them.


Jon Blower wrote:
Hi all,

I'm having problems working with NcML aggregations and the 2.2.16
version of the Java NetCDF libraries.  I would like to aggregate

along the time dimension.  I tried an NcML file like this:

<netcdf xmlns="";>
  <aggregation dimName="time" type="joinNew">
    <variableAgg name="temperature"/>
    <variableAgg name="salinity"/>
    <scan location="/path/to/files/" suffix=".nc"
dateFormatMark="NATL_1_#ddMMyyyy" />

This gave me a NullPointerException:


I think I know why this is.  There are other files in the same
directory of the form "" and I think the
aggregator is trying to match these.  Can I arrange it so that only
files that match the pattern "" are aggregated, and
all others are simply ignored?

I am reluctant to change the directory structure of my data because
other applications may depend on it.

Thanks in advance,

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