> > > > Dave, > After many hours in this ticket, I have to agree that you are right, this is > a bug. Basically, the IDV pass a 3D object to the VisAD library to resample > the slice of the crosssection, and the input 3D object has no missing data, > but the resample slice coming back from VisAD library has many missiong data > near the surface levels. I will pass the information to VisAD developers to > find a solution or at least an explanation. > > > Yuan Dave, According to Tom Rink: "Sigma coordinates are often terrain following so there would be missing data near (depending on resolution) and below the terrain. When transformed to physical space, grid surfaces can have irregularities (concave structures) which can be difficult for the resample algorithm. " So, I would say the solution is to transfer the data to the grid format using the WRF post process script before the visualization. Yuan Ticket Details =================== Ticket ID: WYC-198714 Department: Support IDV Priority: Emergency Status: Open
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