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20050212: Gempak - Grid 104

Mark,

GVCORD should be "none" for surface precip.
Check the "gdinfo" output for levels/coordinates available.

Steve Chiswell
Unidata User SUpport


>From: "Mark Yorsaner" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200502130129.j1D1TK7F010848

>Institution: Florida State University
>Package Version: 5.6
>Operating System: Solaris
>Hardware Information: N/A
>Inquiry: I am a novice at GEMPAK, and I need to plot NGM  output on grid 104. 
> After entering GEMPAK, I have these parameters (I want to center output over 
> OK):
>
> GDATTIM   Grid date/time                    f24
> GLEVEL    Grid level                        0
> GVCORD    Grid vertical coordinate          PRES
> GFUNC     Scalar grid                       p06m
> GDFILE    Grid file                         ngm_20020612.grd
> CINT      Contour interval/min/max          0
> LINE      Color/type/width/label/smth/fltr  3
> MAP       Map color/dash/width/filter flag  1
> TITLE     Title color/line/title            1
> DEVICE    Device|name|x size;y size|color   XW
> SATFIL    Satellite image filename(s)        
> RADFIL    Radar image filename(s)            
> PROJ      Map projection/angles/margins|dr  nps
> GAREA     Graphics area                     ok
> CLEAR     Clear screen flag                 YES
> PANEL     Panel loc/color/dash/width/regn   0
> TEXT      Size/fnt/wdth/brdr/N-rot/just/hw  1
> SCALE     Scalar scale / vector scale       999
> LATLON    Line color/dash/width/freq/inc/l   
> HILO      Color/symbol/rng/rad/cnt/intp      
> HLSYM     HILO txt size/posn/font/wdth/hw    
> CLRBAR    Color/ornt/anch/x;y/ln;wd/freq|t   
> CONTUR    Subbox/smooth                     0
> SKIP      Skip_cntr/skip_plt_x;skip_plt_y   0
> FINT      Fill interval/min/max             0
> FLINE     Fill colors/fill types            10-20
> CTYPE     Contour type:  C/F                C
> LUTFIL    Enhancement lookup table filenam   
> STNPLT    Txtc/txt attr|marker attr|stnfil   
> IMBAR     Color/ornt/anch/x;y/ln;wd/freq|t   
>
>I get an error:  [GR -9]  Invalid grid or grid subset size.
> Parameters requested: GDATTIM,GLEVEL,GVCORD,GFUNC,GDFILE,CINT,LINE,MAP,
> TITLE,DEVICE,SATFIL,RADFIL,PROJ,GAREA,CLEAR,PANEL,TEXT,SCALE,LATLON,HILO,
> HLSYM,CLRBAR,CONTUR,SKIP,FINT,FLINE,CTYPE,LUTFIL,STNPLT,IMBAR.
>
>Could you kindly tell me what I'm doing wrong?
>
>Thanks,
>
>Mark Yorsaner
>
>
>
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