[vtkusers] Find closest point

[David Doria]

> 1) Is it possible to obtain the geometry,topology and dataset attributes as
> vtkpolydata instead of getting an unstructured grid?

You can use either of these to convert UnstructuredGrid to PolyData:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/DataSetSurfaceFilter
http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/DataSetSurfaceFilter

> 2) regarding the file I uploaded, is anything wrong with it (sorry for
> insisting)?

Sorry, I'll have to leave this to someone else.

David