differenceND function

List<double> differenceND(
  1. List<double> x,
  2. int d,
  3. int s,
  4. int D,
)

Combined (d and D) differencing and inverse

Implementation

List<double> differenceND(List<double> x, int d, int s, int D) {
  final y = differenceOrd(x, d);
  return differenceSeas(y, s, D);
}