Nikos, I made a screencast that explains how to do what you ask. Please see: https://www.youtube.com/watch?v=TuHpf3HT3Xs&list=PLQut5OXpV-0gqVk8LFD6Riv6X3QcAVw_U&index=14 http://goo.gl/n0Frpb Best, Unidata IDV Support > Hi, > > It's my first time that I am using the IDV so I am not very familiar > with the use of IDV's formulas and libraries. I am trying to plot > the direction (degrees) of ocean wave that I've got as a gridded file > (grib2 from NCEP) and I'd like to plot as vectors. I have already read > the thread ((IDV #VIH-663165) plotting wave direction vectors) but no > luck. Probably I have trouble adding and save the formula (that it's > mentioned in the above thread), and how to use. > > I would appreciate if you tell me, explicitly, what steps I have to > take. > > Best Regards > > Nikos Konstantinou > > Ticket Details =================== Ticket ID: CZQ-485534 Department: Support IDV Priority: Normal Status: Closed
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