[vtkusers] Threshold in a volume

[Iliana García Resines]

Hello,
I would like to know which is the best way of doing the following thing: I have a colored volume, with its values going from 0 to 100. I would like to  given a float parameter, hide all the points with value below this parameter, and keep showing the rest of the points. I guess there is some way in VTK to do this, but I wonder if it is a vtk procedure itself, or maybe some flag in the mapper I am using.
Does someone knows how to perform this? I am using a vtkPolyDataMapper, which makes use of an own-defined Lookup Table.
Thanks in advance
 		 	   		  
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