This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Matt, Please upload your newest file with the wave directions to http://motherlode.ucar.edu/repository/alias/idvupload Best, Unidata IDV Support > Sorry for the confusion. When I go to the Waves section (not Momentum) I want > to plot the Primary wave direction (circled in red). That does not give me a > Flow display. It's a vector field (radian values for direction) so I want to > easily pick a vector plan view from the displays. > > -----Original Message----- > From: Unidata IDV Support [mailto:address@hidden] > Sent: Tuesday, March 01, 2016 20:23 > To: Matthew Muscato <address@hidden> > Cc: address@hidden > Subject: [IDV #ZCS-923814]: Plotting Wave Directions > > Matt, > > I am still not clear on why the Derived formulas will not work for > you. Ultimately the data are derived from u and v. See the attached figure > just > so we are on the same page. > > But any rate, if there is something you prefer in the Formulas, but would > rather > avoid the tedium of going via the Formulas interface, the IDV has the > capability > of putting whatever formula you want under the Derived node. See these > instructions: > > https://www.unidata.ucar.edu/software/idv/docs/workshop/formulas/DerivedData.html > > It a little tricky, but doable. I can give you help in this area if you need > (and > if so, please supply the formula you want). > > Best, > > Unidata IDV Support > > > Hello, > > > > There isn't really anything different between the two. The sea direction > > variable is the direction of waves in radians. Basically, when I click on > > the "Primary wave direction @ Ground or water surface" field, I would like > > to just plot a Flow Display with the arrows on the map without needing to > > go into formulas and such. It's not really a parameter you would contour. > > You want to see the actual direction it's representing. > > > > > > Matt > > > > -----Original Message----- > > From: Unidata IDV Support [mailto:address@hidden] > > Sent: Tuesday, March 01, 2016 18:12 > > To: Matthew Muscato <address@hidden> > > Cc: address@hidden > > Subject: [IDV #ZCS-923814]: Plotting Wave Directions > > > > Matt, > > > > Can you explain to me the difference between wind direction and sea > > direction? > > > > I am trying to understand why the options under the derived node in the IDV > > field selector are not suitable where there are several options to plot as > > vectors (granted they are called "wind")? > > > > Best, > > > > Unidata IDV Support > > > > > Full Name: Matt Muscato > > > Email Address: address@hidden > > > Organization: Weather Routing, Inc. > > > Package Version: 5.2 build date:2015-08-26 18:19 UTC > > > Operating System: Windows 7 > > > Hardware: Java: home: C:\Program Files\IDV_5.2\jre version: 1.8.0_45 > > > j3d:1.6.0-pre9-daily-experimental daily > > > Description of problem: > > > > > > Hello again IDV Viewer Support! > > > > > > I'd like to plot wave directions as vectors. I'm not given any options > > > to do so. I also don't see any parameters for sea directions. I did set > > > my wave direction parameter to wind direction and plot the vectors that > > > way, but that's not ideal. > > > > > > Any thoughts on how i can plot wave directions? > > > > > > Thanks! > > > > > > > > > > > > Ticket Details > > =================== > > Ticket ID: ZCS-923814 > > Department: Support IDV > > Priority: Normal > > Status: Closed > > > > > > > Ticket Details > =================== > Ticket ID: ZCS-923814 > Department: Support IDV > Priority: Normal > Status: Closed > Ticket Details =================== Ticket ID: ZCS-923814 Department: Support IDV Priority: Normal Status: Closed