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Re: NetCDF Operators and Utilities

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: Re: NetCDF Operators and Utilities
  • Date: Tue, 12 Apr 1994 12:45:37 -0600
> Organization: LANL
> Keywords: 199404121817.AA24687

Hi David,

> I read the document you and Steve Emmerson prepared about
> NetCDF operators.  Since we find ourselves in need of some
> of these operators, we wondered if any have already reached
> a deliverable stage.  If so, how can we access the files?
> If not, how long do you estimate as our wait-time?  As an 
> alternative, we will have to write special purpose code to
> handle the file operations.  So, we would much prefer to
> take advantage of these operators and utility programs.

Three of the operators, ncextr, ncstat, and ncbarne, are implemented and
available as part of the "ncopers" package, which you can get from 
       
        ftp://ftp.unidata.ucar.edu/pub/netcdf/ncopers.tar.Z

An additional operator, nccat, was recently posted to the netcdfgroup
mailing list, so it is available by using the search word "nccat" to search
the netcdfgroup archives from the WWW page

        http://www.unidata.ucar.edu/packages/netcdf/

If you can't get it this way and need me to forward a copy through email,
please let me know.  Development work on the other netCDF operators has been
indefinitely suspended until we finish a higher priority project, as
explained in these two answers from the netCDF FAQ list:

    17. What utilities are available for netCDF? 

       Utilities available in the current netCDF distribution from Unidata
       are ncdump, for converting netCDF files to an ASCII human-readable
       form, and ncgen and for converting from the ASCII human-readable form
       back to a binary netCDF file or a C or FORTRAN program for generating
       the netCDF file. In addition, the first release of the netcdf
       operators package, containing three general-purpose netCDF operators,
       is available via anonymous FTP from pub/netcdf/ncopers.tar.Z on
       ftp.unidata.ucar.edu/. See pub/netcdf/utilities.txt on
       ftp.unidata.ucar.edu for more information on utilities and packages
       developed elsewhere for manipulating or displaying netCDF data.

    18. What is the status of implementing additional netCDF operators? 

       Work on additional netCDF operators has been suspended until we can
       get more programmer resources, due to a higher priority recently
       placed on development of an event-driven network data distribution
       system.  Volunteers to implement one or more of the netCDF operators
       are hereby solicited. We will coordinate community efforts to avoid
       duplication of effort, so before you volunteer to work on one of the
       planned netCDF operators, please contact address@hidden to
       find out if someone else is already working on it.

__________________________________________________________________________
                      
Russ Rew                                              UCAR Unidata Program
address@hidden                                        P.O. Box 3000
(303)497-8645                                 Boulder, Colorado 80307-3000