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Greetings Alan, What new projection are you trying to use? Cheers, Sean > Full Name: Alan Bol > Email Address: address@hidden > Organization: COMET > Package Version: 3.1u1 build date:2012-10-22 07:11 UTC > Operating System: Windows 7 > Hardware: Java: home: C:\Program Files\IDV_3.1u1\jre version: 1.6.0_31 > j3d:1.5.2 fcs (build4) > Description of problem: Hi guys, > I'm plotting 500 mb heights from the GEFS ensemble off of motherlode. Whe I > change the projection, mysterious horizontal lines appear. I'm running the > latest version of IDV. Any ideas? > > Ticket Details =================== Ticket ID: SXA-445433 Department: Support IDV Priority: Normal Status: Open