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20051205: snmap levels

Jimmy,

GEMPAK will interpolate levels, so you can plot data values at levels such as 
700.3
even if they aren't in the data set. The data must be monotonic in order to 
interpolate.

However, your problem appears to be that you are specifying a data area of 
"@MOB"
which means "use only data from Mobile, AL", but your GAREA is set to a region
around Illinois/Indiana, so you won't see Mobile, Al in your plot region.

Steve Chiswell
Unidata User Support




>From: address@hidden
>Organization: UCAR/Unidata
>Keywords: 200512051906.jB5J6p7s013422

>Hi-
>I am trying to plot radiosonde positions using snmap. Howver the vertical 
>coordinate, pressure, is listed in the file as say 700.3. When I try to 
>use that as the level, nothing gets plotted. Is there a way to fix this?
>
>The result of using 700.3 as a level is:
>  GEMPAK-SNMAP>r
>  parms  =
>  stid
>  colors =
>  4
>  SNMAP PARAMETERS:
>
>  Data area:          @mob
>  Graphics area name: 37;-91;44;-84
>  Valid parameters:    STID
>  Parameter colors:     4
>  Time:              030531/0017
>  Level:                701
>  Vert coord:          PRES
>  File:              mob.gem
>  Map:               1
>  Title:             0
>  Device:            xw
>  Projection:        LCC
>  Clear screen:      NO
>  Filter:            NO
>  Filter factor:      0.00
>  Panel:             0
>Enter <cr> to accept parameters or type EXIT:
>
>Next plot -- Time:     030531/0017
>  Level:       700   VCOORD:   PRES
>Enter <cr> to accept parameters or type EXIT:
>  Parameters requested: 
>AREA,GAREA,SATFIL,RADFIL,IMCBAR,SNPARM,DATTIM,LEVELS,
>
>VCOORD,SNFILE,COLORS,MAP,LATLON,TITLE,CLEAR,PANEL,DEVICE,PROJ,FILTER,TEXT,
>  LUTFIL,STNPLT.
>  GEMPAK-SNMAP>
>
>So the "next plot" thing appears as if it worked but nothing is displayed 
>on the map. Any ideas on how I can work around this?
>Thanks
>jimmyc
>
>-- 
>James Correia Jr.
>Ph.D. Candidate in Agricultural Meteorology
>President of the ISU Graduate Meteorology Club
>Dept. of Agronomy, Iowa State University
>*********************************************
>Email: address@hidden
>Phone: 515-294-5587
>Web: http://bruce.agron.iastate.edu/jimmyc/
>ISU GMC: http://www.stuorg.iastate.edu/gmc/
>*********************************************
>"There is a difference between knowing the path and walking the path"
>-"Morpheus"
>
>"Wisdom. Strength. Courage. Generosity. Each of us are born with one of
>these. We must find the other three inside of us."
>from "Into the West"
>
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