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19990630: Gempak Scripts under Linux

Jim,

The command to run the Xvfb server is something that only needs
to be run at startup by root. This establishes a server running 
as display :1 screen 0 (eg localhost:1.0).

When you use the xvfb server, you will no longer send your gempak display to
localhost:0 which is your console X server. Instead, send your display
to localhost:1.

You should verify that your Server is allowing connections from your 
system using something like: xterm -display localhost:1
If you are denied a connection, then you probably haven't
configured your /etc/X1.hosts file for what machines will be
allowed to connect to the display- this file lists machines
1 per line like:
laraine.unidata.ucar.edu
sunshine.unidata.ucar.edu
zero.unidata.ucar.edu

Steve Chiswell
Unidta User Support




>From: "Jim St. John" <address@hidden>
>Organization: .
>Keywords: 199906301552.JAA11462

>Sorry to keep bothering you with this.  I'm not very familiar with Linux and I
>was gone last week and Mark (our system guru) is gone this week.  I'm still
>having trouble getting GIF products out Gempak scripts.  We got Xvfb as Chiz
>suggested and I tried using it in the scripts but I still bomb out.
>
>Here is a script I've been trying to use:
>
>#! /bin/csh
>#
>#Script to plot meteogram
>#
>
>cd /home/stjohn                 # go somewhere to do this
>if(-e gempak.gif) then
>   rm gempak.gif
>endif                   # remove old gempak.gif
>
>cd /home/httpd/html
>if(-e metgram.gif) then
>   rm metgram.gif
>endif
>
>setenv LD_LIBRARY_PATH /usr/X11R6/lib:
>/usr/X11R6/bin/Xvfb  :1 -screen 0 1280x1024x8 &
>setenv DISPLAY localhost:0
>source /nawips/Gemenviron
>#
>set YMD = `date -u +%Y%m%d`
>echo $YMD
>set mfile = $SAO'/'$YMD'_sao.gem'
>set d1 = `date -u '+%H'`
>echo $mfile
>echo $d1
>if($#argv == 0) then
>   set stn=ATL
>else
>   set stn=$1
>endif
>
>echo $stn
>echo $stn
>
>
>sfgram  << SFGRAM_EOF
> SFFILE   = $mfile
> DATTIM   = all
> STATION  = atl
> TRACE1   = TMPF;DWPF:3/2;3//y0;10;20;30;40;50;60;70;80;90;100
> TRACE2   = PMSL/4
> TRACE3   = gust;brbk
> TRACE4   = vsby/7
> TRACE5   = clds;;wsym/6
> NTRACE   = 5
> TAXIS    = $YMD/0000-$YMD/2359-3
> BORDER   = 1
> MARKER   = 0
> TITLE    = 3
> CLEAR    = y
> DEVICE   = gf | /home/httpd/html/metgram.gif | .5;.5
> PANEL    = 0
> TEXT     = 1/23//sw
>
> run
>
> exit
>SFGRAM_EOF
>
>gpend
>
>____________________________________
>
>Here is the output:
>{11} % metgram
>Setting to decmaps
>[1] 3170
>Setting to decmaps
>19990628
>/var/data/ldm/gempak/surface/19990628_sao.gem
>17
>ATL
>ATL
> SFFILE    Surface data file
>                /var/data/ldm/gempak/surface/19990616_sao.gem
> DATTIM    Date/time                         all
> STATION   Stations                          atl
> TRACE1    Parms/colors/range/witness
>       TMPF;DWPF:3/2;3//y0;10;20;30;40;50;60;70;80;90;100
> TRACE2    Parms/colors/range/witness        PMSL/4
> TRACE3    Parms/colors/range/witness        gust;brbk
> TRACE4    Parms/colors/range/witness        vsby/7
> TRACE5    Parms/colors/range/witness        clds;;wsym/6
> NTRACE    Number of traces                  5
> TAXIS     Time1-time2-tinc;lbl;gln;tck      19990616/0000-19990616/2359-3
> BORDER    Background color/dash/width       1
> MARKER    Marker color/type/size/width/hw   0
> TITLE     Title color/line/title            3
> CLEAR     Clear screen flag                 y
> DEVICE    Device|name|x size;y size|color   gf | /home/httpd/html/metgram.gif
>| .5;.5
> PANEL     Panel loc/color/dash/width/regn   0
> TEXT      Text size/font/width/hw flag      1/23//sw
> Parameters requested: SFFILE,DATTIM,STATION,TRACE1,TRACE2,TRACE3,TRACE4,
> TRACE5,NTRACE,TAXIS,BORDER,MARKER,TITLE,CLEAR,DEVICE,PANEL,TEXT.
> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM>
>GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM>
>GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM>
>GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM> GEMPAK-SFGRAM>failed to set
>default font path
>'/usr/X11R6/lib/X11/fonts/misc/,/usr/X11R6/lib/X11/fonts/Speedo/,/usr/X11R6/li
> b/X11/fonts/Type1/,/usr/X11R6/lib/X11/fonts/75dpi/,/usr/X11R6/lib/X11/fonts/1
> 00dpi/'
>Fatal server error:
>could not open default font 'fixed'
>Creating process: gplt for queue 1409
>Creating process: gf for queue 1410
>_X11TransSocketINETConnect: Can't connect: errno = 111
>_X11TransSocketINETConnect: Can't connect: errno = 111
>_X11TransSocketINETConnect: Can't connect: errno = 111
>_X11TransSocketINETConnect: Can't connect: errno = 111
>_X11TransSocketINETConnect: Can't connect: errno = 111
>_X11TransSocketINETConnect: Can't connect: errno = 111
>^X^HInterrupt
>Interrupt
>
>
>___________________________________________________________________________
>
>The Interrupt came when I used ^c to kill it, then ipcrm to remove the loose
>queues.
>
>I have never seen the font problem before.  Is Gempak looking for a specific
>font file in the /program/nawips/gempak5.4/fonts directory?  Should I add that
>to the library path line in the script?
>
>I appreciate your help.  As soon as I can get these scripts to work we can tur
> n
>off poor old louisxiv which needs rebooting twice a week or else it locks up.
>
>Jim St. John
>
>-- 
>*********************************************************
>* Dr. Jim St. John                                     *
>* Research Scientist                                   *
>* School of Earth and Atmospheric Sciences             *
>* Georgia Institute of Technology                      *
>* Phone:       404-894-1754                            *
>* Fax:         404-894-1106                            *
>* e-mail:      address@hidden                  *
>* Homepage:    http://louisxiv.eas.gatech.edu/~stjohn  *
>*********************************************************
>