NCML aggregation and variableAgg

[John Caron]

Hi Jon:

How do you distinguish between variables that should be aggregated and 
those that shouldnt? for example, often adding a time dimension to the 
coordinate variables screws things up for some software.

jdb at mail.nerc-essc.ac.uk wrote:

>Hi all,
>
>I'm creating aggregations of NetCDF files by aggregating on a new time
>dimension, whose values come from the names of the files.  My .ncml file looks
>like this:
>
><netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2">
>  <aggregation dimName="time" type="joinNew">
>    <variableAgg name="ICEC"/>
>    <variableAgg name="ICETK"/>
>    <variableAgg name="M"/>
>    <variableAgg name="...etc"/>
>    <scan location="C:/data/FOAM_one/" suffix=".nc"
>dateFormatMark="FOAM_#yyyyMMdd.HH" />
>  </aggregation>
></netcdf>
>
>It's a bit tedious to have to specify explicitly all the variables I want to
>aggregate.  I want to aggregate all variables so I would like to be able to
>have:
>
><netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2">
>  <aggregation dimName="time" type="joinNew">
>    <variableAgg name="*"/>
>    <scan location="C:/data/FOAM_one/" suffix=".nc"
>dateFormatMark="FOAM_#yyyyMMdd.HH" />
>  </aggregation>
></netcdf>
>
>or something like that.  Is this possible?  If I try that, no variables get
>aggregated (when I open a GridDataset, there is no time dimension).
>
>Thanks in advance,
>Jon
>
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