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[netCDFJava #VRE-280309]: Problem converting NcML to NetCDF

<aggregation dimName="ocean_time" type="joinExisting">
  <netcdf 
location="http://omglnx1.meas.ncsu.edu:8080/thredds/dodsC/models/GOMTOX/2008/avg/avg_gom_0036.nc";
 coordValue=" 4724233380 4724278140 "/>
</aggregation>

does not restrict to the first 2 indices of the time dimension.

So the real bug is here:

   float u(ocean_time=2, s_rho=36, eta_u=254, xi_u=223);

where it looks like it did what you wanted. I will have to see if I can fix 
that.

This sort of seems seems to work, though its not a general solution:

<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2"; 
location="http://omglnx1.meas.ncsu.edu:8080/thredds/dodsC/models/GOMTOX/2008/avg/avg_gom_0036.nc";
 >
  <dimension name="ocean_time" length="2"/>
</netcdf>

the result i got had 3 times, im not sure why.


> John & Co,
> 
> I'm not sure this is the problem.  Each record in these files is about
> 80MB, and although that aggregation has 351 time records, I'm only
> trying to read two time records with the NcML.
> 
> If I try instead to access a OpenDAP URL for the same model that has
> only three time steps (with a total file size is 183MB), I get the
> same error:
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
> <aggregation dimName="ocean_time" type="joinExisting">
> <netcdf
> location="http://omglnx1.meas.ncsu.edu:8080/thredds/dodsC/models/GOMTOX/2008/avg/avg_gom_0036.nc";
> coordValue=" 4724233380 4724278140 "/>
> </aggregation>
> </netcdf>
> 
> As I mentioned on the phone yesterday, I was looking for an
> alternative way to extract just a few time records from a remote file
> as NetCDF on my desktop.
> 
> Thanks,
> Rich
> 
> On Tue, Apr 14, 2009 at 6:45 PM, Unidata netCDF Java Support
> <address@hidden> wrote:
> > the problem is that the 3D vars in that file are > 2 Gbytes, eg
> >
> >   float v(ocean_time=351, s_rho=36, eta_v=253, xi_v=224);
> >
> > So you need to use the large format, and i think theres currently not a way 
> > to specify that on on that interface. Ill have to add that.
> >
> > but are you sure you want to write a file that big?
> >
> >> NJ Folks,
> >>
> >> I've created a NcML file that ToolsUI-4.0.jar reads just fine, but
> >> when I try to convert to NetCDF, I get this error:
> >>
> >> C:\RPS\java\jar>java -Xmx1024m -classpath toolsUI-4.0.jar
> >> ucar.nc2.dataset.NetcdfDataset -in test.ncml -out foo.nc
> >>
> >> Read from test.ncml write to foo.nc
> >> Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
> >> at java.lang.System.arraycopy(Native Method)
> >> at ucar.ma2.Array.arraycopy(Array.java:286)
> >> at 
> >> ucar.nc2.ncml.AggregationOuterDimension.read(AggregationOuterDimension.java:314)
> >> at ucar.nc2.dataset.VariableDS._read(VariableDS.java:466)
> >> at ucar.nc2.Variable.read(Variable.java:790)
> >> at ucar.nc2.FileWriter.copyAll(FileWriter.java:294)
> >> at ucar.nc2.FileWriter.copyVarData(FileWriter.java:250)
> >> at ucar.nc2.FileWriter.writeToFile(FileWriter.java:207)
> >> at ucar.nc2.dataset.NetcdfDataset.main(NetcdfDataset.java:1486)
> >>
> >> The NcML file I'm trying to convert looks like this:
> >>
> >> <?xml version="1.0" encoding="UTF-8"?>
> >> <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
> >> <aggregation dimName="ocean_time" type="joinExisting">
> >> <netcdf
> >> location="http://omglnx1.meas.ncsu.edu:8080/thredds/dodsC/gomtox/2005/avg";
> >> coordValue=" 4613955180 4613999940"/>
> >> </aggregation>
> >> </netcdf>
> >>
> >> --
> >> Dr. Richard P. Signell   (508) 457-2229
> >> USGS, 384 Woods Hole Rd.
> >> Woods Hole, MA 02543-1598
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: VRE-280309
> > Department: Support netCDF Java
> > Priority: Normal
> > Status: Open
> >
> >
> 
> 
> 
> --
> Dr. Richard P. Signell   (508) 457-2229
> USGS, 384 Woods Hole Rd.
> Woods Hole, MA 02543-1598
> 
> 


Ticket Details
===================
Ticket ID: VRE-280309
Department: Support netCDF Java
Priority: Normal
Status: Open