/// <summary>
/// Constructs a matrix with cells having ascending values.
/// For debugging purposes.
/// </summary>
/// <param name="slices"></param>
/// <param name="rows"></param>
/// <param name="columns"></param>
/// <returns></returns>
public DoubleMatrix3D Ascending(int slices, int rows, int columns)
{
//Cern.Jet.Math.Functions F = Cern.Jet.Math.Functions.functions;
return(Descending(slices, rows, columns).Assign(F1.Chain(F1.Neg, F1.Minus(slices * rows * columns))));
}