[vtkusers] Holes in surface vs volume

[Gary L. Graf]

Hi,
   I have a data set in in regular grid represented by a
vtkStructuredPoints.  I can easily find the iso-surface but when
rendered it will leave holes at the boundary of the grid even though all
the data inside and on the iso-surface is the same, constant, value.
What I would like to do is see the shape as a solid rather than as
independent walls with holes and gaps.  How do I go about doing that?
Thanks - Gary Graf