[visit-developers] Ghost zones on rectilinear data?

Hank Childs childs3 at llnl.gov
Mon Oct 13 18:46:29 EDT 2008


This sounds like something I might be able to help out with.  Can we  
fumble through this topic on the phone?  I'm flying to Chicago  
tomorrow, so I've got several chances to call you while waiting.  The  
first is at 8:30-9:00 PDT.


On Oct 13, 2008, at 1:50 PM, Meredith, Jeremy S. wrote:

> Question: I know for rectilinear data we still use the avtGhostZone  
> array to signify ghost zones.
> And, I know that we have some things like “base index” and “group  
> #” encoded into field data.
> But do we have anything that signifies the begin/end index of ghost  
> zones in a logical index fashion?  And if so, can I trust it later  
> in the pipeline?
> (I see avtRealDims, but that doesn’t appear to contain the ghost  
> zone indexes -- at least not correctly as far as I can tell --  
> bigsil.silo has ghost zones, but its avtRealDims is [0 8 0 8 0 8]  
> for all domains.  Either that, or I’m not understanding what  
> avtRealDims is telling me.)
> --
> Jeremy Meredith
> Oak Ridge National Laboratory

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