Sort.Ascending Method (Double[,], Int32[], Int32[])

Sort a matrix into ascending order by specified keys and returns the permutation vector.

public static void Ascending(
   double[,] ra,
   int[] indkeys,
   int[] iperm
);

ra: double matrix to be sorted into ascending order.
indkeys: int array containing the order the columns of ra are to be sorted. These values must be between 0 and one less than the number of columns in ra.
iperm: int is on input an array the same length as ra. On output, it contains 0, 1, ..., sorted using the same permutations applied to ra.