> Full Name: Dave Dempsey > Email Address: address@hidden > Organization: San Francisco State University > Package Version: 2.9u4 build date:2011-03-02 08:14 UTC > Operating System: Mac OS X > Hardware: Java: home: > /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home version: > 1.6.0_24 j3d:1.5.2 fcs (build4) > Description of problem: Creating display: Omni Control > visad.SetException: visad.SetException: Gridded3DSet.valueToGrid: > ManifoldDimension must be 3 > Gridded3DSet.valueToGrid: ManifoldDimension must be 3 > > I'm trying to calculate surface temperature advection from the latest NAM 40 > km analysis, using the Horizontal Advection formula. I specify temperature @ > height above ground as my scalar field and u- and v-components of wind > @height above ground as the wind components. (The temperature is probably at > 2 meters above ground, while the wind components are 10 meters above ground, > probably. I wonder if this poses a problem.) > Hi Dave, The problem here is the difference in the height, the advection formula in the derived does not work in this case. You can add a local formula to do this: def surfaceHorizontalAdvection(aFF, uFF, vFF): udtdx=GridMath.multiply(GridMath.ddx(aFF),uFF); vdtdy=GridMath.multiply(GridMath.ddy(aFF),vFF); advgrid=GridMath.add(udtdx,vdtdy); return advgrid.negate(); I tested this in my machine and worked. I will probably make some changes in the source code, so you will not need to do this in the future. Yuan > When I click on the Create Display button, I get the error message above. > Ticket Details =================== Ticket ID: RWC-894290 Department: Support IDV Priority: Normal Status: Open
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