/// <summary>
/// Sorts the columns of a matrix by sorting keys.
/// </summary>
/// <param name="keys">The key value for each column.</param>
/// <param name="values">The matrix to be sorted.</param>
/// <param name="comparer">The comparer to use.</param>
public static TValue[,] Sort <TKey, TValue>(TKey[] keys, TValue[,] values, IComparer <TKey> comparer)
{
var indices = Vector.Range(keys.Length);
Array.Sort(keys.Copy(), indices, comparer);
return(values.Get(0, values.Rows(), indices));
}
/// <summary>
/// Sorts the columns of a matrix by sorting keys.
/// </summary>
///
/// <param name="keys">The key value for each column.</param>
/// <param name="values">The matrix to be sorted.</param>
/// <param name="comparer">The comparer to use.</param>
///
public static TValue[,] Sort <TKey, TValue>(TKey[] keys, TValue[,] values, IComparer <TKey> comparer)
{
int[] indices = Accord.Math.Vector.Range(keys.Length);
Array.Sort <TKey, int>(keys, indices, comparer);
return(values.Get(0, values.Rows(), indices));
}