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Re: netcdf

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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
  • Date: Tue, 18 Jan 1994 12:26:44 -0700
> Organization: Dept. Of Chem., U of Western Ontario
> Keywords: 199401142233.AA24283

> Dear Mr. Davis:

In the future, please direct netCDF questions to "address@hidden",
so they will be sent to someone who can provide a timely response.  Thanks.

> I am sending this e-mail to ask your help. Recently, we are developing a
> program that will be able to diagnose a GC system automatically. We decide
> to use AIA formated data as our program's input, and an AIA software kit 
> has been installed in our computer (the compilation has been completed under
> Microsoft C6.0 environment). The problem is: when we write some codes to test
> part functions, such as ncopen, with Visual C++, the compilation s is no 
> problem, but the while running the code, the result shows that ncopen does
> not work. No any error message comes out. Do your know why and how to solve
> it.

We have no direct connection with AIA, and are not very familiar with the
software kit they are distributing.  We have tested the current release
under the Microsoft C 5.0 environment, and it passes all the tests performed
by the "nctest" program, which includes many calls to ncopen.  If you are
using the C++ interface, you should not be using the ncopen function, but
instead just the NcNewFile or NcOldFile constructors.  If you are using the
C interface and calling ncopen, you will have to provide us with more
details to enable us to diagnose the problem, since we know ncopen is
working fine in other codes developed with the AIA software kit.

Does the AIA software kit include the nctest program, and if so, have you
run it to verify the correct compilation of the library?  If running the
nctest program reveals problems, please send us the output, showing the
error messages produced.  If running nctest reveals no problems, then the
problem is likely to be in the way ncopen is invoked.

If the AIA software kit does not include the nctest program, does it include
the nctest directory of sources, so you can compile and run the nctest
program?  If not, you may want to get a copy of the latest netCDF release
via anonymous FTP from 

        host:   ftp.unidata.ucar.edu
        file:   pub/netcdf/netcdf.tar.Z

and use the nctest sources there to help narrow the problem down.

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