UnitMatrix Class

public class UnitMatrix : AnySquareMatrix

Public Class UnitMatrix
	Inherits AnySquareMatrix

public ref class UnitMatrix : public AnySquareMatrix

type UnitMatrix = 
    class
        inherit AnySquareMatrix
    end

Inheritance

Object    AnyMatrixDouble    AnyRectangularMatrix    AnySquareMatrix    UnitMatrix

If you need to use the unit matrix in your calculations, this class will do the job with a minimal memory footprint. Use the static OfDimension(Int32) method to get a unit matrix of the desired dimension. Since this class can only ever represent a unit matrix, it is read-only, and any attempts to set elements will result in an InvalidOperationException. If you want to start with a unit matrix and then modify it, you can use the ToSquareMatrix, ToSymmetricMatrix, and ToDiagonalMatrix methods to produce modify-able matrices of those sorts with initial unit matrix entries.

Reference