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Mike, Have you tried using the RELH(tmpc,dwpc) function? What grids are available on your 292K THTA coordinate? Steve Chiswell Unidata User Support On Mon, 2007-02-05 at 07:17 -0600, Mike Bender wrote: > Steve, > > I have noticed with gempak594 that there is a problem using relh in thta > coords. I have been gdplot_nc in the past to generate say the 292K > surface of pressure, wind, and relh. However now it says it can't find > "RELH" on the requested grids. Gdvint worked fine on the NAM and I > doubled checked it this morning. This error is occurring on RHEL4 EMT64 > machines and FEDORA CORE 6 32 bit machines. > > I went back and used the previous version of GEMPAK's gdplot program on > last nights NAM run, and I got RELH to output just fine. > > Oh, one other note, the RHEL4 EMT64 machines had GEMPAK594 compiled into > them, while the FC6 machines had the pre-compiled binaries loaded in. > What is very strange is, you can output MIXR! but no RELH. > > Thanks > Mike Bender > Senior Meteorologist/ITO > MMAC, Oklahoma City, OK > -- Steve Chiswell <address@hidden> Unidata