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970917: NetCDF Perl Problem

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  • Subject: 970917: NetCDF Perl Problem
  • Date: Wed, 17 Sep 97 09:44:03 -0600
Kevin,

> To: address@hidden
> cc: address@hidden,
> cc: address@hidden
> From: "Kevin Robbins" <address@hidden>
> Subject: NetCDF Perl Problem
> Organization: Louisiana State University/Southern Regional Climate Center
> Keywords: 199709170115.TAA14094

In the above message, you wrote:
> 
> I am having a problem creating a 'scalar variable' using the perl interface. I
> followed the NetCDFPerl manual page suggestion of using:
> 
>       NetCDF::vardef($ncid, "scalar_variable",  NetCDF::FLOAT,\());
> 
> but the program fails with the error message:
> 
>       Usage: NetCDF::vardef(ncid, name, type, dimids) at rcc2nrcs.observed.pl
> line 105, <CDBSVAR> chunk 10.
> 
> The line I am using in my perl program is:
> 
>       NetCDF::vardef($ncid_cdbs,'base_time',NetCDF::DOUBLE,\());
> 
> If I do not include this line, everything else works fine. Global variables,
> variables, attributes, and dimensions are all created fine. If I use a
> reference to a dimensioned array with no values to create my 'base_time
> variable, I get a 'base_time' variable with the unlimited dimension. I even
> tried a 'dimids' reference to a null valued array (@null_dim = ();) with no
> success.
> 
> Any thoughts on how a can successfully create a 'scalar variable' having no
> dimensions using the perl interface? This is the last thing to complete in a
> 320-line perl program!
> 
> Kevin
> 
> - -- 
> Kevin Robbins, Assoc. Dir.       __/|  Phone: (504) 388-1063 (I hate calls)
> Southern Regional Climate Center \o0|  FAX:   (504) 388-2912    ^^^^
> Louisiana State University      =(~ )= email: address@hidden

Try the following (it worked for me):

    NetCDF::vardef($ncid, "scalar_variable",  NetCDF::FLOAT, []);

Regardless of the perl documentation, "\()" isn't the same as "[]".
:-(

Please let me know if this helps.

--------
Steve Emmerson   <http://www.unidata.ucar.edu>