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Hi Eric, When this message occurs after the first iteration, does the script end (or hang)? I would have to take a look at your script and your initial grid file to find out more. You can upload these files to the GEMPAK section of the RAMADDA data repository: http://motherlode.ucar.edu/repository/alias/gempakuploads/ Michael Unidata User Support > Full Name: Eric Kelsey > Email Address: address@hidden > Organization: University of New Hampshire > Package Version: 5.11.1 > Operating System: Mac > Hardware: > Description of problem: Hello, > > I am using GDDIAG in three steps to make new grids. I'm using GDDIAG three > times in a row because the calculations I need to make are too long for GFUNC > to handle in one line. The first iteration of GDDIAG makes a new grid that > the second iteration of GDDIAG uses, and so on with the third iteration. I > wrote a C shell script to loop through several years I want to process. > When the first iteration completes, I get the message: > WARNING: ST_NULL - Output string too small; input string truncated! > What does this message mean? I only get this message when running the script. > If I run through the 3 iterations manually, no errors occur and the grids are > made properly. > > If the error message does not shed light on the problem, I can send you the > script. > Thanks for your help. > EriC > > Ticket Details =================== Ticket ID: BVQ-384174 Department: Support GEMPAK Priority: Normal Status: Open