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Chris, I have an example of a GEMPAK NLDN script posted here: http://my.unidata.ucar.edu/content/software/gempak/examples/lightning/lightning.html I also have a sample of a script in the GEMPAK tutorial: http://my.unidata.ucar.edu/content/software/gempak/tutorial/exam.html And, one more example using the $GEMTBL/config/prmlst.tbl product entry of "points" or "stid" to define a marker or +/- character respectively for the NLDN file alias and the SFCTIME program I provided to list the available times in a surface file which can be used to create output file names and TITLE lines with time string info such as: #!/bin/csh -f source ~gempak/Gemenviron # NLDN environmental variable set in Gemenviron # data files stored in 30 minute files names YYYYMMDDHHNN_nldn.gem # as provided in $NAWIPS/ldm/etc/templates/pqact.gempak_decoders.in cd $NLDN set FILES=`ls *_nldn.gem | tail -4` # create a uniqueue working directory for gif file output set WORKDIR=/tmp/nldn.$$ mkdir -p $WORKDIR cd $WORKDIR foreach FILE ($FILES) # loop for each of most recent data files set TIMES=`sfctime $NLDN/$FILE | grep -v '\['` foreach TIME ($TIMES) # run sfmap for each time in the data file # nldn data typically stored in 5 minute bins per dcnldn set YMDHN=`echo $TIME | cut -c1-6,8-11` set OUTFILE="nldn_${YMDHN}.gif" sfmap << EOF AREA = dset GAREA = uslcc SATFIL = RADFIL = SFPARM = points DATTIM = $TIME SFFILE = nldn|${TIME} COLORS = MAP = 6 LATLON = 0 TITLE = 6 CLEAR = y PANEL = 0 DEVICE = gif|${OUTFILE}|900;700 PROJ = def FILTER = TEXT = LUTFIL = STNPLT = CLRBAR = IMBAR = run exit EOF gpend end end # do something with our gif files, such as create an animaged gif # using the Imagemagick program called convert, pause after last image set LAST=`ls nldn_*.gif | tail -1` convert -loop 0 -delay 20 nldn_*.gif -delay 300 $LAST /tmp/loop_nldn.gif cd /tmp rm -rf $WORKDIR Steve Chiswell Unidata User Support On Sat, 2003-11-01 at 20:18, Chris Novy wrote: > I'm still looking for a sample script I can reverse-engineer to produce GIF > images (non-XW) from NLDN files. Does anyone have an example I can look > at? I'm decoding the NLDN data into.gem files but still can't process them. > > Thanks. > > ..Chris.. >