org.ejml.alg.dense.linsol.qr

Class AdjLinearSolverQr

java.lang.Object

org.ejml.alg.dense.linsol.LinearSolverAbstract

org.ejml.alg.dense.linsol.qr.LinearSolverQr

org.ejml.alg.dense.linsol.qr.AdjLinearSolverQr

All Implemented Interfaces:

AdjustableLinearSolver, LinearSolver<DenseMatrix64F>

public class AdjLinearSolverQr
extends LinearSolverQr
implements AdjustableLinearSolver

A solver for QR decomposition that can efficiently modify the previous decomposition when data is added or removed.

Author:

Peter Abeles

Field Summary

Fields inherited from class org.ejml.alg.dense.linsol.qr.LinearSolverQr

maxCols, maxRows, Q, R

Fields inherited from class org.ejml.alg.dense.linsol.LinearSolverAbstract

numCols, numRows

Constructor Summary

Constructors

Constructor and Description
AdjLinearSolverQr()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	addRowToA(double[] A_row, int rowIndex) Adds a row to A.
DenseMatrix64F	getA() Compute the A matrix from the Q and R matrices.
boolean	removeRowFromA(int index) Removes a row from A.
void	setMaxSize(int maxRows, int maxCols) Changes the size of the matrix it can solve for

Methods inherited from class org.ejml.alg.dense.linsol.qr.LinearSolverQr

modifiesA, modifiesB, quality, setA, solve

Methods inherited from class org.ejml.alg.dense.linsol.LinearSolverAbstract

_setA, invert

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.ejml.factory.LinearSolver

invert, modifiesA, modifiesB, quality, setA, solve

Constructor Detail

AdjLinearSolverQr

public AdjLinearSolverQr()

Method Detail

setMaxSize

public void setMaxSize(int maxRows,
              int maxCols)

Description copied from class: LinearSolverQr

Changes the size of the matrix it can solve for

Overrides:

setMaxSize in class LinearSolverQr

Parameters:

maxRows - Maximum number of rows in the matrix it will decompose.

maxCols - Maximum number of columns in the matrix it will decompose.

getA

public DenseMatrix64F getA()

Compute the A matrix from the Q and R matrices.

Overrides:

getA in class LinearSolverAbstract

Returns:

The A matrix.

addRowToA

public boolean addRowToA(double[] A_row,
                int rowIndex)

Description copied from interface: AdjustableLinearSolver

Adds a row to A. This has the same effect as creating a new A and calling LinearSolver.setA(T).

Specified by:

addRowToA in interface AdjustableLinearSolver

Parameters:

A_row - The row in A.

rowIndex - Where the row appears in A.

Returns:

if it succeeded or not.

removeRowFromA

public boolean removeRowFromA(int index)

Description copied from interface: AdjustableLinearSolver

Removes a row from A. This has the same effect as creating a new A and calling LinearSolver.setA(T).

Specified by:

removeRowFromA in interface AdjustableLinearSolver

Parameters:

index - which row is removed from A.

Returns:

If it succeeded or not.