The SDL Component Suite is an industry leading collection of components supporting scientific and engineering computing. Please visit the SDL Web site for more information....



PseudoInverse


Unit: SDL_math2
Class: none
Declaration: function PseudoInverse (InMat: TMatrix; var PsInv: TMatrix; tol: double): boolean;

The function PseudoInverse calculates the Moore-Penrose inverse (also known as pseudoinverse or general inverse) of the matrix InMat. The resulting pseudoinverse is returned in the variable parameter PsInv. The parameter tol controls the threshold below a near-singular value is considered to be zero. The function returns a TRUE value if the calculation of the pseudoinverse was successful (i.e. if the singular value decomposition used for the calculation of the pseudoinverse converged).

 

Hint: Setting tol to 0.0 automatically defaults to a tolerance threshold which is derived from the machine precision, the degeneracy of the matrix InMat and the size of InMat. So in most cases, setting tol = 0.0 would be a good choice.



Last Update: 2016-Jun-28