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[GEMPAK #SRJ-938159]: trouble using gdpvsf
- Subject: [GEMPAK #SRJ-938159]: trouble using gdpvsf
- Date: Tue, 20 Nov 2012 08:48:03 -0700
Hi Dan,
I fear than GDPVSF has not been maintained in quite some time, and it having
problems due to changes in the some grid routines made around release 6.0. I
am looking at it now and hopefully can get you a working version to test, and
include in the next Unidata release.
Thanks for sending the grid file for me to try.
Michael
> The goal is to produce plots of theta and pressure on a constant
> potential vorticity surface (1.5 PVU in the example below).
>
> I have a grid (ftp://ftp1.esrl.noaa.gov/users/dgottas/Gempak/test.grd)
> that contains data on both constant-pressure (native) and
> potential-temperature (produced with gdvint) surfaces. The listing of
> these grids, as produced by gdinfo, is attached below in TestGridInfo.txt.
>
> When attempting to produce grids of pressure, potential temperature, and
> wind on the 1.5 PVU surface using the following settings for gdpvsf,
>
> GDFILE = test.grd
> GDOUTF = test.grd
> GFUNC = abs(pvor(pres,obs))
> GDATTIM = last
> GVCORD = thta
> STARTL = 400
> STOPL = 200
> DESIRE = 0.0000015
> GDOUTL = 15
> GVOUTC = PVAB
> GPACK
> GLIST = pres;thta;urel;vrel
> PMAX = 700
>
> I receive the sequential errors/warnings "DG_INIT has not been called",
> "No functional grids could be found.", and "Grid size is too large.",
> and no new data/grids are written to the output file. A detailed listing
> of this output is contained in the attached file GdpvsfOutput.txt.
>
> Also, tried to produce the desired grids using the native pressure grids
> as input:
>
> GDFILE = test.grd
> GDOUTF = test.grd
> GFUNC = abs(pvor(thta,obs))
> GDATTIM = last
> GVCORD = pres
> STARTL = 100
> STOPL = 1000
> DESIRE = 0.0000015
> GDOUTL = 15
> GVOUTC = PVAB
> GPACK
> GLIST = pres;thta;urel;vrel
> PMAX = 700
>
> and received the same errors/warnings.
>
> Any insight or guidance you can provide would be greatly appreciated.
>
> Thanks,
>
> Dan
>
>
Ticket Details
===================
Ticket ID: SRJ-938159
Department: Support GEMPAK
Priority: Critical
Status: Open