[Carpet] how to control whether CarpetIOBasic min/max values include boundary zones?

[Erik Schnetter]

On Aug 10, 2006, at 10:41:09, Jonathan Thornburg wrote:

> Hi,
>
> I have discovered that the min/max values in INFO output printed by
> (current-darcs) CarpetIOBasic don't seem to include values in the
> boundary zones of the grid.  For me this is a problem, because I'm
> investigating some error gridfns which are only nonzero in the  
> boundary
> zones.  (I have an example of this sort which has values around 0.05
> at a few boundary points, but CarpetIOBasic prints the min and max
> values as both "0.0000000".)
>
> Is there a way to control whether or not the boundary zones are
> included?  What about symmetry zones?  Interprocessor ghost zones?

The minimum and maximum values are supposed to be the "physical"  
values.  Therefore symmetry points and inter-processor points are not  
included.  Boundary points are included or excluded depending on  
whether the points lie inside or outside of the physical domain.

This is a property of CarpetReduce, not of CarpetIOBasic.

You could introduce a parameter to CarpetReduce determining whether  
this exclusion should be switched off.  The exclusion happens via the  
weight grid function; not setting the weight 0 zero on boundaries  
should do the trick.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>

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