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Hello, Not all data stored as netCDF4 can be represented or converted to a netCDF3 format. The netCDF4 file format was created to encapsulate the netCDF4 enhanced data model; this relies on features not available in netCDF3. The best way to determine if the files can be converted is to try, however. The utility 'nccopy' is a command-line utility distributed with the netCDF library. You don't mention your platform but assuming it is linux, you should be able to install it using your linux package manager. If you are on Windows, you can download a pre-built set of binaries from http://www.unidata.ucar.edu/software/netcdf/docs/winbin.html. Alternatively, you can build the netCDF libraries/utilities using standard development tools. Instructions for this are found at http://www.unidata.ucar.edu/software/netcdf/docs. I hope this helps, have a great day, -Ward > > > Begin forwarded message: > > > From: Dinesh Kumar Arya <address@hidden> > > Date: April 15, 2017 at 5:35:10 PM MDT > > To: address@hidden > > Subject: netcdf > > > > Respected Sir/Madam, > > I have some queries. I want to convert file from netcdf4 to netcdf3. > > How can perform this task from initial step wise step. what is nccopy? > > is it software or command, if command then which software should be > > installed to run this command? > > Please provide solution, I shall be highly obliged to you. > > Yours Sincerely > > Dinesh Kumar Arya > > Pantnagar (India) > > Ticket Details =================== Ticket ID: XFT-464995 Department: Support netCDF Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.