Problem with use of cbarn and user defined functions

[mmacleod]

Good morning All.

I have a recurring problem with both GrADS version 1.8.11 on Windows XP
and on 1.9.4b on Red Hat E4.1 Linux version.

When I plot a 2-D map and use the cbarn.gs or the user function hilo the
draw instructions seems to loose the x position on the page and shifts
even line to the left margin.  See attached maps
"NAM_NovaS_LowLvlMoistConv-WindsH03-Cor.png" which contains the plot
without cbarn being executed within the script script section below:

------ Script lines ----------
'set font 0'
'set strsiz 0.20 0.20'
'draw string 3.5 8.20 Scotia Weather Services Inc'
'set strsiz 0.12 0.12'
'draw string 0.35 7.95 NWS NAM Model 0-30 mb Horizontal Moisture
Divergence and 0-30 mb AGL WInd Direction and Speed'
'set strsiz 0.15 0.15'
'set strsiz 0.12 0.12'


if(xx > 9)

*  This inserts the valid model output date and time for the current time
   'draw string 2.5 0.15 ' xx ' Hr Prog valid at ' time1 ' - ' time3 ' -
' time2 ' - ' time4
   'set strsiz 0.1 0.1'
   'draw string 1.95 0.5 ___ 0-30 mb Horizontal Moisture Divergence (E
-06 kg/kg/s) amd 0-30 mb wind barbs  '

*  This displays the valid date and time of the model run so one does
not get confused when several model runs are available.

   'set strsiz 0.09 0.09'
     'draw string 0.25 0.40 Model run from '
   'draw string 0.25 0.25 ' timea '-' timeb '-' timec '-' timed ' '
   'draw rec .20 .20 1.75 0.55 '

 'set gxout contour'
'cbarn 1 0 6.0 0.75 '


 'printim ' fileset  xx '.png x1000 y800 '

else


*  This inserts the valid model output date and time for the current time
   'draw string 2.5 0.15 0' xx ' Hr Prog valid at ' time1 ' - ' time3 '
- ' time2 ' - ' time4
   'set strsiz 0.1 0.1'
    'draw string 1.95 0.4 ___ 0-30 mb Horizontal Moisture Divergence (E
-06 kg/kg/s) amd 0-30 mb wind barbs  '

*  This displays the valid date and time of the model run so one does
not get confused when several model runs are available.

   'set strsiz 0.09 0.09'
   'draw string 0.25 0.40 Model run from '
   'draw string 0.25 0.25 ' timea '-' timeb '-' timec '-' timed ' '
   'draw rec .20 .20 1.75 0.55 '
 'set gxout contour'
'cbarn 1 0 6.0 0.65 '

'printim ' fileset '0' xx '.png x1000 y800 '
endif

----- End of Script Lines ------

Once cbarn is run and until I reinitialize GrADS, all script runs will
then move the draw lines tight to the left margin as shown in the
attached map "NAM_NovaS_LowLvlMoistConv-WindsH03.png"

Even if I run a scrip that does not have the "run cbarn  " line in it,
the draw statements place the margins tight to the left margin.

The same thing occurs with the use of the hilo user function for the
placement of high and low centres on the  MSL maps.

It appears to be a memory location has a setting changed by cbarn or
hilo that then overrides the x  setting  of draw.

You help to correct this problem is  much appreciated.

Sincerely

Mac MacLeod

--
M.A. (Mac) MacLeod
President and General Manager
Scotia Weather Services Inc
192 Wyse Road, Suite 8,
Dartmouth, N.S. B3A 1M9

Tele: 902-468-3866
Fax:  902-461-1768
E-mail: mmacleod at scotiaweather.com
Visit us: www.scotiaweather.com

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