[gradsusr] Storm Motion Wind Barb Vector using -"30R75" Method

[Nimrod Micael]

I am trying to display the approximate storm motion by taking...

0.75*500 mb wind

30+wind direction....

Can I display that on grads?


I have this so far. ...

'set gxout barb'
'set lev 500'
'set arrlab off'
'set clopts -1 -1 0.14'
'set arrscl 5'
30R=wdir+30
'd wspd*0.75;30R????

http://www.lakeeriewx.com/Meteo361/ResearchTopicThree/StormMotion.html

There's the link.

Specifically it would be nice if Jeff D. can help me with this issue but
others can help as well. Thanks!



-- 
Nimrod Micael
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