org.apache.commons.math.linear
Class MatrixUtils

java.lang.Object
  org.apache.commons.math.linear.MatrixUtils

public class MatrixUtils

extends Object

A collection of static methods that operate on or return matrices.

Version:

$Revision: 1.2 $ $Date: 2004/10/25 05:36:15 $

Constructor Summary

MatrixUtils()
Default constructor.

Method Summary

static BigMatrix	createBigMatrix(BigDecimal[][] data) Returns a BigMatrix whose entries are the the values in the the input array.
static BigMatrix	createBigMatrix(double[][] data) Returns a BigMatrix whose entries are the the values in the the input array.
static BigMatrix	createBigMatrix(String[][] data) Returns a BigMatrix whose entries are the the values in the the input array.
static BigMatrix	createColumnBigMatrix(BigDecimal[] columnData) Creates a column BigMatrix using the data from the input array.
static BigMatrix	createColumnBigMatrix(double[] columnData) Creates a column BigMatrix using the data from the input array.
static BigMatrix	createColumnBigMatrix(String[] columnData) Creates a column BigMatrix using the data from the input array.
static RealMatrix	createColumnRealMatrix(double[] columnData) Creates a column RealMatrix using the data from the input array.
static RealMatrix	createRealMatrix(double[][] data) Returns a RealMatrix whose entries are the the values in the the input array.
static BigMatrix	createRowBigMatrix(BigDecimal[] rowData) Creates a row BigMatrix using the data from the input array.
static BigMatrix	createRowBigMatrix(double[] rowData) Creates a row BigMatrix using the data from the input array.
static BigMatrix	createRowBigMatrix(String[] rowData) Creates a row BigMatrix using the data from the input array.
static RealMatrix	createRowRealMatrix(double[] rowData) Creates a row RealMatrix using the data from the input array.

Methods inherited from class java.lang.Object

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

Constructor Detail

MatrixUtils

public MatrixUtils()

Default constructor. Package scope to prevent unwanted instantiation.

Method Detail

createRealMatrix

public static RealMatrix createRealMatrix(double[][] data)

Returns a RealMatrix whose entries are the the values in the the input array. The input array is copied, not referenced.

Parameters:

data - input array

Returns:

RealMatrix containing the values of the array

Throws:

IllegalArgumentException - if data is not rectangular (not all rows have the same length) or empty

NullPointerException - if data is null

createBigMatrix

public static BigMatrix createBigMatrix(double[][] data)

Returns a BigMatrix whose entries are the the values in the the input array. The input array is copied, not referenced.

Parameters:

data - input array

Returns:

RealMatrix containing the values of the array

Throws:

IllegalArgumentException - if data is not rectangular (not all rows have the same length) or empty

NullPointerException - if data is null

createBigMatrix

public static BigMatrix createBigMatrix(BigDecimal[][] data)

Returns a BigMatrix whose entries are the the values in the the input array. The input array is copied, not referenced.

Parameters:

data - input array

Returns:

RealMatrix containing the values of the array

Throws:

IllegalArgumentException - if data is not rectangular (not all rows have the same length) or empty

NullPointerException - if data is null

createBigMatrix

public static BigMatrix createBigMatrix(String[][] data)

Returns a BigMatrix whose entries are the the values in the the input array. The input array is copied, not referenced.

Parameters:

data - input array

Returns:

RealMatrix containing the values of the array

Throws:

IllegalArgumentException - if data is not rectangular (not all rows have the same length) or empty

NullPointerException - if data is null

createRowRealMatrix

public static RealMatrix createRowRealMatrix(double[] rowData)

Creates a row RealMatrix using the data from the input array.

Parameters:

rowData - the input row data

Returns:

a 1 x rowData.length RealMatrix

Throws:

IllegalArgumentException - if rowData is empty

NullPointerException - if rowDatais null

createRowBigMatrix

public static BigMatrix createRowBigMatrix(double[] rowData)

Creates a row BigMatrix using the data from the input array.

Parameters:

rowData - the input row data

Returns:

a 1 x rowData.length BigMatrix

Throws:

IllegalArgumentException - if rowData is empty

NullPointerException - if rowDatais null

createRowBigMatrix

public static BigMatrix createRowBigMatrix(BigDecimal[] rowData)

Creates a row BigMatrix using the data from the input array.

Parameters:

rowData - the input row data

Returns:

a 1 x rowData.length BigMatrix

Throws:

IllegalArgumentException - if rowData is empty

NullPointerException - if rowDatais null

createRowBigMatrix

public static BigMatrix createRowBigMatrix(String[] rowData)

Creates a row BigMatrix using the data from the input array.

Parameters:

rowData - the input row data

Returns:

a 1 x rowData.length BigMatrix

Throws:

IllegalArgumentException - if rowData is empty

NullPointerException - if rowDatais null

createColumnRealMatrix

public static RealMatrix createColumnRealMatrix(double[] columnData)

Creates a column RealMatrix using the data from the input array.

Parameters:

columnData - the input column data

Returns:

a columnData x 1 RealMatrix

Throws:

IllegalArgumentException - if columnData is empty

NullPointerException - if columnDatais null

createColumnBigMatrix

public static BigMatrix createColumnBigMatrix(double[] columnData)

Creates a column BigMatrix using the data from the input array.

Parameters:

columnData - the input column data

Returns:

a columnData x 1 BigMatrix

Throws:

IllegalArgumentException - if columnData is empty

NullPointerException - if columnDatais null

createColumnBigMatrix

public static BigMatrix createColumnBigMatrix(BigDecimal[] columnData)

Creates a column BigMatrix using the data from the input array.

Parameters:

columnData - the input column data

Returns:

a columnData x 1 BigMatrix

Throws:

IllegalArgumentException - if columnData is empty

NullPointerException - if columnDatais null

createColumnBigMatrix

public static BigMatrix createColumnBigMatrix(String[] columnData)

Creates a column BigMatrix using the data from the input array.

Parameters:

columnData - the input column data

Returns:

a columnData x 1 BigMatrix

Throws:

IllegalArgumentException - if columnData is empty

NullPointerException - if columnDatais null