Well, I doubt that the input of the get position will do any significant. But want to be proofed wrong ,-)
With functions: The output of the 'get position' can be converted to the scalars X,Y,Z.
You can use two conditionals for setting a range for each scalar:
If X is larger than i.e. 1000 (m) then ... if X is smaller than i.e. 2000 (m)
Of course instead of the values (1000 and 2000) a function can be used.
Else, I would do it more random ... multiplying the 'get position' output with a large scaled, high contrasting powerfractal.
