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Bruce and Robert, Since you were involved in the original VAD discussion, I'll invite you to download my GPVAD for testing. Note that this program will display the NVW NEXRAD Level III product which is just drawing command and line locations rather than actual time/height values as is found in the RCM product. That is, the NVW product contains drawing commands for lines, colors, vectors to produce the picture, as opposed to an upperair type of SNCROSS plot which would be more likely from the RCM. Steve Chiswell Unidata User Support ----------------------------------------------------------- I placed 2 files out on the download/gempak/contrib site (so far), a source and a Linux binary: http://my.unidata.ucar.edu/modules.php?name=Downloads&d_op=viewsdownload&sid=9 To install the Linux binary, download the tarfile to your $NAWIPS directory and unpack from there with: gunzip -c gpvad_linux.tar.gz | tar xvf - To build from source, unpack the source code tar file from $NAWIPS: gunzip -c gpvad.tar.gz | tar xvf - Then build with: cd $NAWIPS/unidata/programs/gpvad make clean make all make install make clean Run the program as "gpvad". To specify a NEXRAD Level III file, you can either give RADFIL the name, or use a template. To use the NEXRIII template as defined in $GEMTBL/config/datatype.tbl, as an example, RADFIL = NEXRIII|ILX|NVW RADTIM = current WIND = bk1 TITLE = 1/-2/ILX VAD DISPLAY ~ PANEL = 0 DEVICE = XW CLEAR = y TEXT = 1/1/1/hw CLRBAR = 1/v/cl/.05;.5/.3;.01 GEMPAK-GPVAD> The NEXRIII template uses %SITE% = ILX and %PROD% = NVW in composing the file template in this example. NVW is the only valid %PROD% value. See online help "phelp gpvad" for more info.