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I checked the write permission of the file and it was ok to write to. But when I sent the output grid to a new file it worked fine. Not sure if this was a glitch in gdstat, but the problem was solved. Thanks for the info though. Regards- jimmyc On Tue, 17 Sep 2002, Unidata Support wrote: > >From: "J. Correia" <address@hidden> > >Organization: UCAR/Unidata > >Keywords: 200209111700.g8BH0B128097 > > >i run gdstat and get this error : > > > > GDFILE Grid file lapavn_02.grd > > GDOUTF Output grid file lapavn_02.grd > > GDATTIM Grid date/time all > > GLEVEL Grid level 500 > > GVCORD Grid vertical coordinate pres > > GFUNC Scalar grid laph > > GRDNAM Grid parameter name > > Parameters requested: GDFILE,GDOUTF,GDATTIM,GLEVEL,GVCORD,GFUNC,GRDNAM. > > GEMPAK-GDSTAT>gdattim=020101/0000f000-020131/0000f000-24 > > GEMPAK-GDSTAT>r > > [TG 0] 020101/0000f000-020131/0000f000-24 > > GDSTAT PARAMETERS > > > > Found 30 grids > > Times: 020101/00F00-31/00F00 > > Average grid name: AVELAPH > > Standard deviation grid name: SDVLAPH > > Count grid name: CNTLAPH > > > >Enter <cr> to accept parameters or type EXIT: > > [GD -4] File not open. > > [GDSTAT -7] Error writing grid AVELAPH to output file. > > [GD -4] File not open. > > [GDSTAT -7] Error writing grid SDVLAPH to output file. > > [GD -4] File not open. > > [GDSTAT -7] Error writing grid CNTLAPH to output file. > > Parameters requested: GDFILE,GDOUTF,GDATTIM,GLEVEL,GVCORD,GFUNC,GRDNAM. > > GEMPAK-GDSTAT> > > > > > >the file has plenty of room for more grids. are the names too long? any > >ideas? > >jimmyc > > > > > > > > Jimmy, > > I'm not sure what the trouble is. Do you have write permission to the > GDOUTF? > > What version of GEMPAK are you running (eg type "version" at the gdcross > prompt). It might be necessary to send me a sample file. Would it be possible > for you to create a new file with gdcfil of the same projection and use gdmod > to copy over the 500mb laph grids? If we can't see an easy solution, I'll > probably need to download your grid file and give it a whirl here. > > Steve Chiswell > **************************************************************************** < > Unidata User Support UCAR Unidata Program < > (303)497-8643 P.O. Box 3000 < > address@hidden Boulder, CO 80307 < > ---------------------------------------------------------------------------- < > Unidata WWW Service http://www.unidata.ucar.edu/ < > **************************************************************************** < >