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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi,The netCDF 3 file format doesn't support structures so you can't currently create/write structures. (You should be able to once netCDF 4 comes out.) What you can do structure-wise with netCDF 3 fils is think of all the variables that use the record (unlimited) dimension as a structure. The creation (in the netCDF-java object model, not on file) of a "record" structure variable is what the addRecordStructure() method does. So, to use structures in netCDF 3 files, you need to write the files with an unlimited dimension and when you read the files use the addRecordStructure().
Here is a recently (or soon to be) released document on structures in netCDF 3 files (sorry if this is what Russ already sent you):
http://www.unidata.ucar.edu/packages/netcdf-java/formats/RecordsInNetcdf3.html Hope this helps, Ethan Russ Rew wrote:
Thanks for the pointers. I have been reading through the Structures examples and that looks like what I need to do. Do you happen to have any example of how to create and write structures using the Java NetCDF API? I haven't used the Java library before and addRecordStructure() is always returning false, 2.2 alpha build.Sorry, I don't know of any examples for that. I'm CC:ing Ethan Davis and John Caron, in case they have an example they could point to or know why addRecordStructure() might be returning false. --Russ
-- Ethan R. Davis Telephone: (303) 497-8155 Software Engineer Fax: (303) 497-8690 UCAR Unidata Program Center E-mail: address@hidden P.O. Box 3000 Boulder, CO 80307-3000 http://www.unidata.ucar.edu/ ---------------------------------------------------------------------------