Did you try a colon between the times
GDATTIM = 0000F000:0300F000
See the old support answer
I also suspect you need 1 GEMPAK grid file
http://www.unidata.ucar.edu/support/help/MailArchives/gempak/msg02259.html
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Dr. Emily Berndt
( ) )
Assistant Professor
( ( )
Department of Earth and Atmospheric Sciences ( (
( )
Saint Louis University
(___)___(___________)
3642 Lindell Blvd., St. Louis, MO 63108
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On Mon, Apr 22, 2013 at 10:07 AM, Peter Banacos - NWS Federal <
peter.banacos@xxxxxxxx> wrote:
> List:
>
> Has anyone ever tried plotting the isallobaric wind (vectors or magnitude)
> using NARR data? I've tried multiple possibilities using GDPLOT2, but it
> doesn't seems to recognize the assigned time range across two separate
> files (F000 from files spaced 3-hrs apart). Presumably it's just a syntax
> problem...any ideas?
>
> GDFILE =
> narr-a_221_20030212_0000_000.gem+narr-a_221_20030212_0300_000.gem
> GDATTIM = 0000F000!0300F000
> GLEVEL = 925!925
> GVCORD = PRES!PRES
> PANEL = 0
> SKIP = 0
> SCALE = 0!0!0!0
> #GDPFUN = knts(mag(ISAL))
> GDPFUN = knts(mag(ISAL(HGHT^030212/0000F000+2,HGHT^030212/0300F000+1))
> <etc>
>
> --
> Peter C. Banacos, Lead Forecaster
> NOAA/National Weather Service
> WFO Burlington, VT
> weather.gov/btv
> E-mail: peter.banacos@xxxxxxxx
> Phone: (802) 862-2475
>
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