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Re: Hdf5-eos aggregation question



Hi Penny:

A number of changes in the code are needed to handle this file, which will have 
to wait until the
4.0 release is out. Hopefully a version will be ready in the next month or so. 
If you want to test
with a preliminary release, let me know.

Also here is the test NcML I used, a few changes are needed:

<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>

  <dimension name="time" length="2" />
  <variable name="mytime3" type="double" shape="time">
    <attribute name="units" value="days since 2007-06-01 00:00:00"/>
    <attribute name="_CoordinateAxisType" value="Time"/>
    <values>45 76</values>
  </variable>

  <aggregation type="joinNew" dimName="mytime3">
    <netcdf 
location="/testdata/hdf5/eos/aura/TES-Aura_L3-CH4-M2007m07_F01_04.he5"/>
    <netcdf 
location="/testdata/hdf5/eos/aura/TES-Aura_L3-CH4-M2007m08_F01_04.he5"/>
    <variableAgg name="HDFEOS/GRIDS/NadirGrid/Data Fields/CH4"/>
  </aggregation>

</netcdf>

Oots, Penny C. (LARC-E301)[SCIENCE SYSTEMS & APPLICATIONS INC.] wrote:
> I get the following error when trying to aggregate three hdf5-eos files
> in my Thredds (version 3.16.27) server
> 
>  
> 
> Error { code = -1; message = "Server Error on dataset
> TESmethane_aggregation"; };
> 
>  
> 
> In the catalina.out log I see the following error:
> 
> 2008-01-04T09:28:04.030 -0500 [     82575][      18] ERROR -
> thredds.server.opendap.NcDODSServlet - Error
> 
> java.lang.IllegalArgumentException: Variable
> /HDFEOS//HDFEOS/GRIDS//HDFEOS/GRIDS/NadirGrid//HDFEOS/GRIDS/NadirGrid/Data_Fields/CH4
> setDimensions = null null null FAILED, dim doesnt exist=null
> 
>         at ucar.nc2.Variable.setDimensions(Variable.java:1160)
> 
>  
> 
> Here is the catalog.xml code used:
> 
>  
> 
> <dataset name="TESmethane" ID="TESmethane" serviceName="thisDODS"
> 
>    urlPath="TESmethane_aggregation">
> 
>    <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
> 
>  
> 
>    <variable name="mytime3" type="double" shape="time">
> 
>       <attribute name="units" value="days since 2007-06-01 00:00:00"/>
> 
>       <attribute name="_CoordinateAxisType" value="Time"/>
> 
>       <values>15 45 76</values>
> 
>    </variable>
> 
>  
> 
>        <aggregation type="joinNew" dimName="mytime3">
> 
>            <netcdf
> location="/usr/local/tomcat/content/thredds/public/testdata/TES_Aura_L3_CH4_M2007m06_F01_04.he5"/>
> 
>            <netcdf
> location="/usr/local/tomcat/content/thredds/public/testdata/TES-Aura_L3-CH4-M2007m07_F01_04.he5"/>
> 
>            <netcdf
> location="/usr/local/tomcat/content/thredds/public/testdata/TES-Aura_L3-CH4-M2007m08_F01_04.he5"/>
> 
>         <variableAgg name="CH4"/>
> 
>         </aggregation>
> 
>  </netcdf>
> 
>  </dataset>
> 
>  
> 
> Opendap version being used is Hyrax 1.2.1.
> 
>  
> 
> I have successfully aggregated netcdf files using similar code (with
> help from Roland Schweitzer).
> 
>  
> 
> The server I am using is not public but the three data files can be
> downloaded from  
> 
> ftp://l4ftl01.larc.nasa.gov/TES/TL3CH4M.001/
> 
> I am using the files under 2007.06.02, 2007.07.02 and 2007.08.02. 
> (Note, the file name under 2007.06.02 starts with TES_ and the others
> start with TES-.  Not sure why.)
> 
>  
> 
> Would appreciate any help or insight on how to accomplish this aggregation.
> 
> Thanks,
> 
> Penny Oots
> Science Systems & Applications Inc.
> NASA Langley Research Center, MS 157D
> Hampton, VA 23681-2199
> (757) 864-9816
> 
>  
> 


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