[Paraview] xyzc file to vtk

[Luca Cinquepalmi]

Hi, I have an ascii file with 4 fileds:

X Y Z C

where X, Y, Z represent the coordinates of the point, and C represent 
the component/value of the point (e.g. temperature, umidity, ecc.) I 
want to convert this file in a vtk file. Is it possible? How can I do 
it? Thanks

Luca