perturb
Perturbs the input values away from the granularity grid by a random factor based on a percentage of the granularity. The returned array is not limited to the granularity of the inputs and may not be input feasible.
Return
an array representing the perturbed input values
Parameters
perturbation
the perturbation factor. Must be a number in (0.0, 1.0)
rn
the stream to use for randomizing the perturbation