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Hi Robert Question: Is the data in meters/ KM? If yes this should be possible. If no then you could theoretically write a formula that would derive the pressure from the altitude, and then make use of the IDV wind shear formulas. Also, correct me if I am wrong, but I did not find any data in your bundle. If/when you reply please include a bundle with data. Thanks. -Julien > Full Name: Robert D'Arienzo > Email Address: address@hidden > Organization: Rutgers University > Package Version: 2.9u3 build date:2011-01-14 00:05 UTC > Operating System: Mac OS X > Hardware: Java: home: > /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home version: > 1.6.0_22 j3d:1.5.2 fcs (build4) > Description of problem: Hi, I was wondering if there is a formular for > calculating wind shear (at 6km). I saw similar formlas, but they involve the > levels of pressure and not elevation. Any suggestions on how I can calculate > the shear? Thanks you! > > Ticket Details =================== Ticket ID: FUN-662442 Department: Support IDV Priority: Normal Status: Closed