From Gary.Hodges at noaa.gov  Thu Feb  1 15:20:14 2007
From: Gary.Hodges at noaa.gov (Gary Hodges)
Date: Thu, 01 Feb 2007 15:20:14 -0700
Subject: varid return value
Message-ID: <45C2679E.8010608@noaa.gov>

The netcdf man page indicates that ncvarid will return a value of -1 if 
an error occurs.  I have the following code and I know that "head_temp2" 
does not exist in the netcdf file.

my $vid = NetCDF::varid($ncid, "head_temp2");
print("$vid\n);

I get the error "ncvarid: ncid 5: Variable not found" when this is run. 
  Ultimately what I want to do is test if a variable exists and set a 
flag based on the result so I'm not necessarily tied to varid.

Gary

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From steve at unidata.ucar.edu  Thu Feb  1 15:32:03 2007
From: steve at unidata.ucar.edu (Steve Emmerson)
Date: Thu, 01 Feb 2007 15:32:03 -0700
Subject: varid return value
In-Reply-To: <45C2679E.8010608@noaa.gov>
References: <45C2679E.8010608@noaa.gov>
Message-ID: <45C26A63.4020309@unidata.ucar.edu>

Gary,

Does the perl script exit after the error occurs?  Are you using the
NetCDF::opts() function to tell the netCDF library not to terminate
when an error occurs?

Regards,
Steve Emmerson

Gary Hodges wrote:
> The netcdf man page indicates that ncvarid will return a value of -1 if 
> an error occurs.  I have the following code and I know that "head_temp2" 
> does not exist in the netcdf file.
> 
> my $vid = NetCDF::varid($ncid, "head_temp2");
> print("$vid\n);
> 
> I get the error "ncvarid: ncid 5: Variable not found" when this is run. 
>  Ultimately what I want to do is test if a variable exists and set a 
> flag based on the result so I'm not necessarily tied to varid.
> 
> Gary
> 
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> 
> To unsubscribe netcdf-perl, visit:
> http://www.unidata.ucar.edu/mailing-list-delete-form.html
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> 

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