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20030324: Interesting gddiag challenge.
- Subject: 20030324: Interesting gddiag challenge.
- Date: Mon, 24 Mar 2003 16:12:16 -0700
Lewis,
It seems like the shorthand ^fxxx isn't correctly expanded to
the full YYMMDD/HHNN/fxxx. Can you try:
GFUNC= sub(p24m,p18m^f018)
GDATTIM=f024
GRDNAM=p06m^030324/1200f024
If that still fails, you might need to see (using gdinfo)
if you have some corrupt entries in your file from failed
computations and remove them with gddelt.
Steve Chiswell
address@hidden
>From: "Poulin,Lewis [CMC]" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200303242010.h2OKAPB2025020
>Hi Steve..
>
>Thanks for your suggestion..
>
>I did try it out but now am getting some unusual messages that the grid
>already exists and will be replaced. It's like it is overwritting the grid
>because it is not recognizing the ^fNNN in grdnam
>
>Here is a copy of a portion of the gddiag output as it is running:
>
>Hmmm...
>
>Lewis
>
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F024 0 NONE P06M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p24m,p18m^f018)
> GDATTIM Grid date/time f024
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p06m^f024
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F024 0 NONE P12M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p24m,p12m^f012)
> GDATTIM Grid date/time f024
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p12m^f024
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F030 0 NONE P06M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p30m,p24m^f024)
> GDATTIM Grid date/time f030
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p06m^f030
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F030 0 NONE P12M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p30m,p18m^f018)
> GDATTIM Grid date/time f030
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p12m^f030
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F030 0 NONE P24M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p30m,p06m^f006)
> GDATTIM Grid date/time f030
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p24m^f030
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F036 0 NONE P06M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p36m,p30m^f030)
> GDATTIM Grid date/time f036
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p06m^f036
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F036 0 NONE P12M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p36m,p24m^f024)
> GDATTIM Grid date/time f036
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p12m^f036
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F036 0 NONE P24M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p36m,p12m^f012)
> GDATTIM Grid date/time f036
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p24m^f036
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F042 0 NONE P06M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p42m,p36m^f036)
> GDATTIM Grid date/time f042
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p06m^f042
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F042 0 NONE P12M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p42m,p30m^f030)
> GDATTIM Grid date/time f042
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p12m^f042
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F042 0 NONE P24M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p42m,p18m^f018)
> GDATTIM Grid date/time f042
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p24m^f042
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> [TG -3] Invalid
>forecast time.
> [TG -5] Invalid time range.
> [GR -20] No times selected.
> [GR -20] No times selected.
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p48m,p42m^f042)
> GDATTIM Grid date/time f48^f048
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p06m^f048
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>F048 0 NONE P12M
>Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
>requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GDFILE Grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GDOUTF Output grid file
>/data/vortex/tmp/web/2003032412_cmcglblo.gem
> GFUNC Scalar grid sub(p48m,p36m^f036)
> GDATTIM Grid date/time f048
> GLEVEL Grid level 0
> GVCORD Grid vertical coordinate none
> GRDNAM Grid parameter name p12m^f048
> GPACK Packing type/number of bits
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GPACK.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
>GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> This grid is
>already in file. It will be replaced.
>
>
>
>
>-----Original Message-----
>From: Unidata Support [mailto:address@hidden]
>Sent: Monday, March 24, 2003 12:37 PM
>To: address@hidden
>Cc: address@hidden
>Subject: 20030324: Interesting gddiag challenge.
>
>
>
>Lewis,
>
>You can control the grid identification for a calculated parameter
>by specifying the information in GRDNAM using the ^, @ and %
>inline modifiers to override the default parameter name
>that would be created..
>
>For example when calculating a precipitation difference,
>GDATTIM = f024
>GFUNC=sub(P24M,P12M^f012)
>GRDNAM=P12M^f024
>
>The GRDNAM will use f024 for TIME1 only instead of
>using the 2 times f024 and f012 as it would default.
>
>The above is also possible when doing layer or multiple
>vertical coordinate calculations that you want to be
>identified using a single or different height and/or
>vertical coordinate.
>
>Steve Chiswell
>
>
>
>
>
>>From: address@hidden
>>Organization: UCAR/Unidata
>>Keywords: 200303241358.h2ODwWB2025335
>
>>Hello Unidata Support
>>
>>I have a little challenge with gddiag.
>>
>>In a nutshell:
>>
>>Is there a way to force a gddiag calculation to write only 1 time in the
>>gempak output grid? My gddiag calculation seems to want to include TIME1
>and
>>TIME2 in the ouput grid and I am concerned that this may be causing
>problems
>>in nmap..
>>
>>Here is what I am trying to do:
>>
>>Background:
>>
>>I am presently adapting the Canadian Grib Data for viewing in NMAP2.
>>
>>I am converting it to gempak format, have adapted the nmap tables to
>>recognize the new grid.
>>
>>It seems to be working fine for most things....except precip is giving me a
>>bit of a challenge.
>>
>>The file(s) I am working with contain cummulative precipitation in the form
>>of P06M, P12M, P18M, P24M, etc..representing cummulative precip from 00hr
>at
>>06,12,18,24 etc respectively.
>>
>>One of the scripts in NMAP2 can print Precip_12hr_mm with the following
>>lines in the script:
>>
>>gdattim=f12-last-12
>>gdpfunc=p12m
>>
>>My problem is that I don't have a P12M for each time interval. The way my
>>present data file is structured it only has P12M for f12.
>>
>>My attempst at a solution:
>>
>>During the process of turning my initial grib data into gempak format, I
>>decided to add a gddiag calculation using the lines of code below (see
>>gddiag calculation below) to actually calculate various intervals of
>>precipitation and label them so that the nmap scripts can more easily
>>recognize them.
>>
>>The gddiag calculation works fine I believe except that it adds a TIME2 to
>>the name of the variable.
>>
>>I have verified that the p12m grids were indeed calculated by checking for
>>their presence using gdinfo.
>>I can plot these calculated p12m grids using gdcntr using:
>>
>># This will work in gdcntr if I define a time interval
>>gddattim=f36:f24
>>gfunc=P12M
>>
>>#This will not work in gdcntr
>>gddatim=f36
>>gfunc=p12M
>>error input grid not found.
>>
>>Now when viewing the results in NMAP2, I get the nmap2 script to recognize
>>most of the the P12M variables by using
>>
>>gdattim=f12-last-12
>>gdpfunc=p12m
>>
>>It works except for f36 which does not appear in nmap. (but it is there in
>>gdcntr)
>>
>>When I try plotting the P06M intervals using
>>gdattim=f06-last-6
>>gdpfunc=p06m
>>
>>again it seems to work but sporatically.
>>
>>
>>Are the time intervals resulting from gddiag causing a problem?
>>
>>Any suggestions would be greatly appreciated.
>>
>>Thanks
>>
>>Lewis Poulin
>>CMC-Montreal
>>
>>
>>
>>
>>
>>
>>GDDIAG CALCULATION USED TO CALCULATE INTERVALS OF PRECIPITATION
>>
>>for hour1 in 12_6 18_6 18_12 24_6 24_12 30_6 30_12 30_24 36_6 36_12 36_24
>>42_6 42_12 42_24 48_6 48_12 48_24
>>do
>>case ${hour1} in
>> 12_6)
>> func_var="sub(p12m,p06m^f06)"
>> gdattim_var=f12
>> grdnam_var=p06m
>> ;;
>> 18_6)
>> func_var="sub(p18m,p12m^f12)"
>> gdattim_var=f18
>> grdnam_var=p06m
>> ;;
>> 18_12)
>> func_var="sub(p18m,p06m^f06)"
>> gdattim_var=f18
>> grdnam_var=p12m
>> ;;
>> 24_6)
>> func_var="sub(p24m,p18m^f18)"
>> gdattim_var=f24
>> grdnam_var=p06m
>> ;;
>> 24_12)
>> func_var="sub(p24m,p12m^f12)"
>> gdattim_var=f24
>> grdnam_var=p12m
>> ;;
>> 30_6)
>> func_var="sub(p30m,p24m^f24)"
>> gdattim_var=f30
>> grdnam_var=p06m
>> ;;
>> 30_12)
>> func_var="sub(p30m,p18m^f18)"
>> gdattim_var=f30
>> grdnam_var=p12m
>> ;;
>> 30_24)
>> func_var="sub(p30m,p06m^f06)"
>> gdattim_var=f30
>> grdnam_var=p24m
>> ;;
>> 36_6)
>> func_var="sub(p36m,p30m^f30)"
>> gdattim_var=f36
>> grdnam_var=p06m
>> ;;
>> 36_12)
>> func_var="sub(p36m,p24m^f24)"
>> gdattim_var=f36
>> grdnam_var=p12m
>> ;;
>> 36_24)
>> func_var="sub(p36m,p12m^f12)"
>> gdattim_var=f36
>> grdnam_var=p24m
>> ;;
>> 42_6)
>> func_var="sub(p42m,p36m^f36)"
>> gdattim_var=f42
>> grdnam_var=p06m
>> ;;
>> 42_12)
>> func_var="sub(p42m,p30m^f30)"
>> gdattim_var=f42
>> grdnam_var=p12m
>> ;;
>> 42_24)
>> func_var="sub(p42m,p18m^f18)"
>> gdattim_var=f42
>> grdnam_var=p24m
>> ;;
>> 48_6)
>> func_var="sub(p48m,p42m^f42)"
>> gdattim_var=f48
>> grdnam_var=p06m
>> ;;
>> 48_12)
>> func_var="sub(p48m,p36m^f36)"
>> gdattim_var=f48
>> grdnam_var=p12m
>> ;;
>> 48_24)
>> func_var="sub(p48m,p24m^f24)"
>> gdattim_var=f48
>> grdnam_var=p24m
>> ;;
>> *)
>> ;;
>>esac
>>
>>#echo hour1=$hour1
>>#echo func_var=$func_var
>>#read
>>
>>gddiag << EOF
>>gdfile=${gempakfile}
>>gdoutf=${gempakfile}
>>gfunc=$func_var
>>gdattim=$gdattim_var
>>glevel=0
>>gvcord=none
>>grdnam=$grdnam_var
>>gpack=
>>r
>>
>>
>>ex
>>EOF
>>
>>done
>>
>
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