cynosurex.math
Class Matrix

java.lang.Object
  cynosurex.math.Matrix

All Implemented Interfaces:

cynosurex.internal.AuthorCommon, cynosurex.internal.CommonInterface, cynosurex.internal.CompanyCommon

public class Matrix
extends java.lang.Object
implements cynosurex.internal.CommonInterface

Field Summary

protected int	columns
protected double[][]	matrix
protected int	rows

Fields inherited from interface cynosurex.internal.CommonInterface

copyright, copyrightYears, notice, program, version

Fields inherited from interface cynosurex.internal.AuthorCommon

author, copyrightSymbol, noticeMsg, rights

Fields inherited from interface cynosurex.internal.CompanyCommon

company, email, website

Constructor Summary

Matrix(double[][] initValue)
Create a new matrix based on the specified array.

Matrix(int rows, int columns)
Create a new matrix based on the specified rows and columns.

Matrix(int rows, int columns, double initValue)
Create a new matrix based on the specified rows, columns, and initial value.

Method Summary

static Matrix	addition(Matrix a, Matrix b) This static method adds two matrices and produces the result in the thrid matrix.
double[][]	getArray() This method returns the matrix as a double array.
int	getColumns() This method returns the number of columns in the matrix.
java.awt.Dimension	getDimension() This method returns the Dimension of the matrix.
int	getRows() This method returns the number of rows in the matrix.
Matrix	getTranspose() This method returns the transpose the current matrix.
double	getValueAt(int row, int column) This method returns one of the value in the matrix.
static Matrix	identityMatrix(int dimension) This static method creates an identity matrix based on the specified dimension.
static Matrix	multiplication(Matrix a, Matrix b) This static method multiplies two matrices and produces the result in the third matrix.
void	setValueAt(double value, int row, int column) This method sets one of the value in the matrix.
java.lang.String	toString() Overrides the super class method.
void	Transpose() This method transposes the current matrix.

Methods inherited from class java.lang.Object

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

Field Detail

rows

protected int rows

columns

protected int columns

matrix

protected double[][] matrix

Constructor Detail

Matrix

public Matrix(int rows,
              int columns)

Create a new matrix based on the specified rows and columns.

Parameters:

rows - number of rows in the matrix

columns - number of columns in the matrix

Matrix

public Matrix(int rows,
              int columns,
              double initValue)

Create a new matrix based on the specified rows, columns, and initial value.

Parameters:

rows - number of rows in the matrix

columns - number of columns in the matrix

initValue - initial value of the matrix

Matrix

public Matrix(double[][] initValue)

Create a new matrix based on the specified array. Each column and row size must be the same or a MatrixDimensionMismatchException will be thrown.

Parameters:

initValue - array containing the initial values

Method Detail

addition

public static Matrix addition(Matrix a,
                              Matrix b)

This static method adds two matrices and produces the result in the thrid matrix.

Parameters:

a - the first matrix

b - the second matrix

multiplication

public static Matrix multiplication(Matrix a,
                                    Matrix b)

This static method multiplies two matrices and produces the result in the third matrix.

Parameters:

a - the first matrix

b - the second matrix

identityMatrix

public static final Matrix identityMatrix(int dimension)

This static method creates an identity matrix based on the specified dimension.

Parameters:

dimension - dimension of the matrix to produce

getDimension

public java.awt.Dimension getDimension()

This method returns the Dimension of the matrix.

getColumns

public int getColumns()

This method returns the number of columns in the matrix.

getRows

public int getRows()

This method returns the number of rows in the matrix.

getValueAt

public double getValueAt(int row,
                         int column)

This method returns one of the value in the matrix.

Parameters:

row - specifies the row of the value

column - specifies the column of the value

setValueAt

public void setValueAt(double value,
                       int row,
                       int column)

This method sets one of the value in the matrix.

Parameters:

value - value to place in the matrix

row - specifies the row of the value

column - specifies the column of the value

getArray

public double[][] getArray()

This method returns the matrix as a double array.

Transpose

public void Transpose()

This method transposes the current matrix.

getTranspose

public Matrix getTranspose()

This method returns the transpose the current matrix.

toString

public java.lang.String toString()

Overrides the super class method.

Overrides:

toString in class java.lang.Object