QR

java.lang.Object
- no.uib.cipr.matrix.QR

public class QR
extends java.lang.Object

Computers QR decompositions

Constructor Summary

Constructors
Constructor Description

QR(int m, int n)
Constructs an empty QR decomposition

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`QR`	`factor(DenseMatrix A)`	Computes an orthogonal decomposition
`static QR`	`factorize(Matrix A)`	Convenience method to compute a QR decomposition
`DenseMatrix`	`getQ()`	Returns the orthogonal part of the factorization
`UpperTriangDenseMatrix`	`getR()`	Returns the upper triangular factor

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - QR
```
public QR(int m,
          int n)
```
    Constructs an empty QR decomposition
    
    Parameters:
    
    m - Number of rows. Must be larger than or equal the number of columns
    
    n - Number of columns
- Method Detail
  - factorize
```
public static QR factorize(Matrix A)
```
    Convenience method to compute a QR decomposition
    
    Parameters:
    
    A - Matrix to decompose. Not modified
    
    Returns:
    
    Newly allocated decomposition
  - factor
```
public QR factor(DenseMatrix A)
```
    Computes an orthogonal decomposition
    
    Parameters:
    
    A - Matrix to decompose. Overwritten on exit. Pass a copy to avoid this
    
    Returns:
    
    The current decomposition
  - getR
```
public UpperTriangDenseMatrix getR()
```
    Returns the upper triangular factor
  - getQ
```
public DenseMatrix getQ()
```
    Returns the orthogonal part of the factorization