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> Hi > > I am trying to make a streamline view on wind speed and direction point data. > > I have a csv that contains > Latitude[unit="degree"],Longitude[unit="degree"],WINDSPEED[unit="m/sec"],WINDDIRECTION[unit="degree"] > I converted them to U,V vectors. > > Once I loaded the csv into IDV > I have "Gridded Fields" U and V separately > > And I use "Formulas">"Grids">"Make flow vectors from u and v data" to > form a "Wind Barb Plan View" > > It seems to me that the wind barb output from gridded UV is very > different from the originaly csv WindSpeed and WindDirection > (using station model) > > I have tried to find the document for this but fail. > WANT TO KNOW: > Is this supported by IDV? > Any tunning I need to do? Eric, I think you are on the right track, not sure how much difference in your output. Can you send me some output image and maybe a small sample data? Yuan > > Thanks a lot! > > -- > Best Regards, > Eric Fong > > Ticket Details =================== Ticket ID: UQR-619669 Department: Support IDV Priority: Normal Status: Open