[vtkusers] Best way to ray cast-render arbitrary points?

[Emma]

Hi!
I have a file with x-, y- and z-coordinates, and every coordinate point have
a value. What is the best way for rendering this as a ray traced cloud?
I want the outcome to look something like this picture i made (Though the
picture was made with a StructuredPoints)
<http://vtk.1045678.n5.nabble.com/file/n5722325/imageFile_1.jpg> 



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