Class SparseQR

Class describing the QR factorisation of a CompressedColumn

Inheritance
Object
SparseQR
Namespace: BRIDGES.LinearAlgebra.Factorisation
Assembly: BRIDGES.dll
Syntax
public class SparseQR : object

Constructors

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SparseQR(CompressedColumn)

Initialises a new instance of the SparseQR class by computing the QR factorization of a CompressedColumn.

Declaration
public SparseQR(CompressedColumn matrix)
Parameters
Type Name Description
CompressedColumn matrix

Matrix over which the factorisation is performed.

Methods

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Solve(DenseVector)

Solves the linear system : A·X=Y

Declaration
public DenseVector Solve(DenseVector vector)
Parameters
Type Name Description
DenseVector vector

DenseVector Y of the linear system.
Returns
Type Description
DenseVector

The DenseVector X, solution of the system.
Remarks

Since pre-factorisations are dedicated to speed, no exception handeling is provided.

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Solve(SparseVector)

Solves the linear system : A·X=Y

Declaration
public SparseVector Solve(SparseVector vector)
Parameters
Type Name Description
SparseVector vector

SparseVector Y of the linear system.
Returns
Type Description
SparseVector

The Vector X, solution of the system.
Remarks

Since pre-factorisations are dedicated to speed, no exception handeling is provided.

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Solve(Vector)

Solves the linear system : A·X=Y

Declaration
public Vector Solve(Vector vector)
Parameters
Type Name Description
Vector vector

Vector Y of the linear system.
Returns
Type Description
Vector

The Vector X, solution of the system.
Remarks

Since pre-factorisations are dedicated to speed, no exception handeling is provided.

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Solve(Double[])

Solves the linear system : A·X=Y

Declaration
public double[] Solve(double[] components)
Parameters
Type Name Description
Double[] components

-precision array representing the Y vector of the linear system.
Returns
Type Description
Double[]

The -precision array representing the X vector, solution of the system.
Remarks

Since pre-factorisations are dedicated to speed, no exception handeling is provided.