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20021115: GEMPAK scripts

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  • Subject: 20021115: GEMPAK scripts
  • Date: Fri, 15 Nov 2002 16:59:17 -0700

Werner,

You show below that you are using the PS device.
I don't see that you have run "gpend" following
you scripts. Without running gpend, you have not
flushed the output buffer and appended the 
closing sequence with "showpage" in the postscript file.

Remember, that until you have run gpend, you can still
append more plots to the file, and only after you have
run gpend will your drawing commands be flushed to the file
from the remaining buffer and have the complete trailing postscript
in the file which tells the printer that the page is complete.

A postscript plot will have the vector drawing commands buffered and
written a chunk at a time. A gif file, on the otherhand will
have nothing until the gpend command is issued since the gif file
can only be created from the final raster after all drawing has finished.

Steve Chiswell



>The following only plots the first panel:
>
>gdcntr << endgdcntr
> GDFILE = 02102612_eta211.gem
> GDATTIM  = F000
>
><snip>
>
> clear = n
> title = 1/-2/1000 -500 hPa Thickness (dashed) (6 dam)
>r
>
> GDFILE = 02102512_eta211.gem
> GDATTIM = F024
> panel = 2
>r
>
>exit
>endgdcntr









>From: Werner Wintels <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200211152040.gAFKeQL11677

>
>There seems to be some inconsistency in the performance of gempak 
>scripts. On some platforms (and some versions of GEMPAK) you need to exit 
>and re-enter the GEMPAK programs each time in order to produce 
>multi-panel or multi contour plots. 
>
>For example, this script segment will produce plots in panel 1 and panel 2: 
>
>
>gdcntr << endgdcntr
> GDATTIM = F000
> GLEVEL = 850
> panel  = 1
> GFUNC = mixr
> GDFILE = 02102612_eta211.gem
> CINT     = 1
>LINE     = 1/1/1/1
> MAP      = 1
> DEVICE   = ps
> PROJ     = STR/90;-80;0
>GAREA    = 35;-90;50;-60
> CLEAR    = n
> PANEL    = 3
> TEXT     = .7
> SCALE    = 0
> LATLON   = 1/10
> HILO     =
> HLSYM    = 3.2;1/3/3/6
> CLRBAR   =
> CONTUR   =
> FINT     = 2;3;4;5;6;8;10
>  FLINE    = 0;19;16;13;11;8;19;5
> CTYPE    = C/F
> LUTFIL   = 
> STNPLT   =
>r
>
>exit 
>endgdcntr 
>
>gdcntr << endgdcntr
> GDFILE   = 02102512_eta211.gem
> GDATTIM  = F024
> panel    = 2
>r
>
>exit
>endgdcntr
>
>The following only plots the first panel:
>
>gdcntr << endgdcntr 
> GDFILE = 02102612_eta211.gem
> GDATTIM  = F000
>
><snip>
>
> clear = n
> title = 1/-2/1000 -500 hPa Thickness (dashed) (6 dam)
>r 
>
> GDFILE = 02102512_eta211.gem
> GDATTIM = F024
> panel = 2
>r
>
>exit 
>endgdcntr
>
>
>I'm not sure why the second script only works some of the time.  
>
>Thanks
>
>Werner Wintels
>