variables, on which rank swapping should be applied
p
Percentage. Swapping range.
Value
xoriginal data
xmthe rank swapped data
methodinfo about the method name
Details
The values of a variable are
ranked, then each ranked value is swapped with
another ranked value randomly chosen within a restricted range, i.e. the rank
of two swapped values cannot differ by more than p percente of the total number of
records. The function apply the rank swapping on each variable independently.