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Mike, You have to change MMHDRS both in gemprm.$(NA_OS) and gemprm.h. After making any changes to the include files, you must remove all files from the $GEMLIB directory, run "make clean" from $NAWIPS, then do a complete rebuild so that the libraries get built with the new sizes defined. Steve Chiswell Unidata User Support On Fri, 28 Apr 2000, Mike Trexler wrote: > > Hi Chiz, > > Hope things are going well. Just a quick question...when you need to > recompile > gempak to accomodate grid files which will hold more than 9999 grids per file > which parameter in the gemprm.SunOS file is it that you increase? I thought > it > was MMHDRS, but that didn't seem to have any effect after I doubled it. The > in-line documentation isn't exactly clear as to which variable controls this. > Thanks for your help. > > Mike > >