19990902: Plotting Question

>From: "Collin Daly" <address@hidden>
>Organization: .
>Keywords: 199909021423.IAA15620

>Hello,
>    I am looking for an example of how to plot a surface pressure map
>(with High's and Low's plotted) with an overlay of precip.  

Colin,

Here is an example using gdplot for the 24 hour forecast eta pressure
and 24 hour accumulated precip:
 GDFILE    Grid file                         $HDS/1999092012_eta_grid211.gem
 GDATTIM   Grid date/time                    f024
 GLEVEL    Grid level                        0
 GVCORD    Grid vertical coordinate          none
 PANEL     Panel loc/color/dash/width/regn   0
 SKIP      Skip_cntr/skip_plt_x;skip_plt_y   0
 SCALE     Scalar scale / vector scale       0
 GFUNC     Scalar grid                       quo(p24m,25.4) ! emsl
 CTYPE     Contour type:  C/F                f ! c
 CONTUR    Subbox/smooth                     3/3
 CINT      Contour interval/min/max          4 ! 0
 LINE      Line color/type/width/label       5
 FINT      Fill interval/min/max             
.01;.1;.25;.5;.75;1;1.25;1.5;1.75;2;2.25;2.5;2.75;3;3.25;3.5;3.75;4
 FLINE     Fill colors                       0;21-30;14-20;5
 HILO      Color/symbol/rng/rad/cnt/intp     ! 4;2/H;L/1016-1100;800-1008/
 HLSYM     HILO txt size/posn/font/wdth/hw   3/2/33/2/hw
 CLRBAR    Color/ornt/anch/x;y/ln;wd/freq    31/v/LL/.95;.1
 GVECT     Vector grid                       
 WIND      Wind symbol/siz/wdth/typ/hdsz     an6
 REFVEC    Mag;x;y;txtsiz/font/wdth/HW;labl  
 TITLE     Title color/line/title            5/-1/~ Surface Pressure, Precip 
(inches)
 TEXT      Text size/font/width/hw flag      t/22/1/hw
 CLEAR     Clear screen flag                 y
 GAREA     Graphics area                     uslcc
 PROJ      Map projection/angles/margins|dr  lcc
 MAP       Map color/dash/width              31
 LATLON    Line color/dash/width/label/inc   0
 DEVICE    Device|name|x size;y size|color   xw
 STNPLT    Txc|mkc/mkt/mks/mkwd/hwfl|stnfil  
 SATFIL    Satellite image filename(s)       $SAT/GINI-W/1km/VIS/VIS_990615_2100
 RADFIL    Radar image filename(s)           
 LUTFIL    Enhancement lookup table filenam  default
 GEMPAK-GDPLOT>



>A good
>example is the cover of the Unidata Gempak manual.  Additioanlly, how do
>I plot a bar graph to correspond with a parameter?  If there is an
>example in you web page please let me know.

Gempak does not plot "bar graphs". You can plot a color bar scale
as shown in the above example, but if you are refering to a
value/bar graph like an excel spreadsheet plot, Gempak is not capable.

Gempak can plot line graphs using sfgram, sntser and gdtser- but no bar
graphs.

Steve CHiswell
Unidata User Support


>Thanks,
>Collin
>
>
>Collin Daly
>Meteorological Systems Engineer
>Alden Electronics, Inc.
>40 Washington Street
>Westborough, Ma 01581
>Voice: (508)366-8851x2268
>Fax:    (508)898-2427
>e-mail: address@hidden
>  visit us at:
>http://www.alden.com
>