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Re: Information on NetCDF library

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  • Subject: Re: Information on NetCDF library
  • Date: Fri, 09 Nov 2012 16:51:21 -0700
Hi Enrico:
The problem is that the hdf4 file has groups, and FileWriter.writeToFile() writes netcdf3 files, which does not. 

4.3.14 will have the ability to write to netcdf4 files.

John

On 11/5/2012 10:03 AM, Enrico Boldrini wrote:

Dear John,

I'm a colleague of Stefano Nativi (CNR, Italy). I'm using your very
helpful Java library for NetCDF; I've found a potential problem trying
to convert a hdf file to a NetCDF file, with the following code:

     NetcdfFile ncFile =
NetcdfFile.open("/home/boldrini/Downloads/MOD17A3.C5.1.GEO.2000.hdf");
     File outFile = File.createTempFile("HDF", ".nc");
     ucar.nc2.FileWriter.writeToFile(ncFile, outFile.getAbsolutePath());

(The input file can be downloaded at:
ftp://nacp.ornl.gov/synthesis/2008/firenze/continental/ARCHIVAL/original/OM_MODIS_GPP/MOD17A3.C5.1.GEO.2000.hdf)


The stack trace I get is the following:

Exception in thread "main" java.lang.IllegalArgumentException: illegal
netCDF-3 object name
     at
ucar.nc2.NetcdfFileWriteable.addDimension(NetcdfFileWriteable.java:234)
     at ucar.nc2.FileWriter.writeToFile(FileWriter.java:135)
     at ucar.nc2.FileWriter.writeToFile(FileWriter.java:82)
     at eu.floraresearch.sdi.gt_coverage.gt.HDFTest.main(HDFTest.java:11)

(it seems related to escaped names.. just guessing)

Am I missing/misusing something? Any feedback is appreciated, thank you!

Enrico Boldrini