[gradsusr] Percentage Probabilities

[CW Weather]

Hi Grads users,  

I want to produce a percentage probability using temperatures from the
GFS, the script i use is below. How would I go about scripting this for
example, a percentage probability above 10c? Any help would greatly
appreciated......  

i = 1
while ( i<maps ) 

* Set up a few preliminary characteristics
setmap(1)
sett2mcols(1)
'set t 'i 

'define t850=tmpprs(lev=850)-273.16' 

'set gxout shaded'
'set csmooth on'
'color -gxout shaded -35 40 0.5 -kind
indigo->darkviolet->fuchsia->blue->lightblue->green->yellow->orange->red->maroon->lightpink->white'


'd t850'

-- 
Kind regards, 

STUART MARKHAM 

_Founder of CW Weather_
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20170423/bc831fea/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 9e849405.png
Type: image/png
Size: 22440 bytes
Desc: not available
Url : http://gradsusr.org/pipermail/gradsusr/attachments/20170423/bc831fea/attachment-0001.png