[gradsusr] How to calculate velocity vector?

[T. haghroosta]

Dear All,
 
I would like to calculate velocity vector in one point with grads ( outcome of u and v). Could you please tell me how can I do that? I mean:
set lat 10
set lon 100
d (?) ----- > outcome (u,v)
 
Best regards,
 
T.

 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20130405/c4e6f7f8/attachment-0003.html