> Hi Yuan, > > No, I really only have SPEED (a scalar) and DIRECTION (a unit vector), not > special namings of U and V. > > Murray Same procedure, in Cannonical name 2 or 3 should have alias for speed and direction. Yuan > > > ----- Original Message ----- > From: "Unidata IDV Support" <address@hidden> > To: <address@hidden> > Cc: <address@hidden> > Sent: Tuesday, July 30, 2013 12:51 PM > Subject: [IDV #JNF-919753]: IDV and windspeed and direction grids > > > >> Yuan, > >> > >> I'm really surprised this morning not to find any wind vector display > >> method > >> for speed and direction grids, only U and V component grids. Am I > >> missing > >> something, or is there a special addon to do that? > >> > >> Murray > >> > >> > > Murray, > > It is likely the U and V component in your grids are using some > > special namings and the IDV doesn't recognize them. To make the derived > > wind vector work, you can added the U and V component to the alias table. > > In the Field Selector panel, select the variable, right click on the > > selected U(or V), a drop down menu will popup, "add XXX as alias for" > > > Cannonical name 3 > U - U component wind, and the same to the V. After > > that, reload the dataset, and you should see the derived wind vector. > > > > > > Yuan > > > > Ticket Details > > =================== > > Ticket ID: JNF-919753 > > Department: Support IDV > > Priority: Normal > > Status: Closed > > > > Ticket Details =================== Ticket ID: JNF-919753 Department: Support IDV Priority: Normal Status: Closed
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