com.altair.hwm.beans.utils
Class HWMMatrix

java.lang.Object
  com.altair.hwm.beans.utils.HWMMatrix

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable

public class HWMMatrix
extends java.lang.Object
implements java.io.Externalizable

Title: HWMMatrix

Description: This is a utility class that will perform Matrix functions

Company: Altair Engineering, Inc.

See Also:

Serialized Form

Constructor Summary

HWMMatrix()
Constructor

HWMMatrix(int nNumRows, int nNumCols)
Constructor

Method Summary

HWMMatrix	Add(HWMMatrix hwmMatrix) Add two matrices together
double	GetData(int nRow, int nCol) Get the data at the specified location
double	GetDeterminant() Get the determinant of the matrix.
HWMMatrix	Inverse() Get the inverse of the matrix.
HWMMatrix	Multiply(HWMMatrix hwmMatrix) Multiplpy this matrix with another matrix
void	readExternal(java.io.ObjectInput objInput) Loads the version and then calls the appropriate read function for the version
void	SetData(int nRow, int nCol, double dData) Set the data at the specified location
HWMMatrix	Subtract(HWMMatrix hwmMatrix) Subtract another matrix from this
java.lang.String	toString() Represents the matix as a String.
void	writeExternal(java.io.ObjectOutput objOutput) Save the persistent properties

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

HWMMatrix

public HWMMatrix()

Constructor

HWMMatrix

public HWMMatrix(int nNumRows,
                 int nNumCols)

Constructor

Method Detail

SetData

public void SetData(int nRow,
                    int nCol,
                    double dData)
             throws java.lang.ArrayIndexOutOfBoundsException

Set the data at the specified location

Parameters:

nRow - The row index

nCol - The column index

dData - The data to be set at that location

Throws:

java.lang.ArrayIndexOutOfBoundsException

GetData

public double GetData(int nRow,
                      int nCol)
               throws java.lang.ArrayIndexOutOfBoundsException

Get the data at the specified location

Parameters:

nRow - The row index

nCol - The column index

Returns:

double The data to from the specifed location in the matrix

Throws:

java.lang.ArrayIndexOutOfBoundsException

Add

public HWMMatrix Add(HWMMatrix hwmMatrix)
              throws java.lang.Exception

Add two matrices together

Parameters:

hwmMatrix - The other matrix

Returns:

The sum of the two matrices

Throws:

java.lang.Exception

Subtract

public HWMMatrix Subtract(HWMMatrix hwmMatrix)
                   throws java.lang.Exception

Subtract another matrix from this

Parameters:

hwmMatrix - The other matrix

Returns:

The difference of the two matrices

Throws:

java.lang.Exception

Multiply

public HWMMatrix Multiply(HWMMatrix hwmMatrix)
                   throws java.lang.Exception

Multiplpy this matrix with another matrix

Parameters:

hwmMatrix - The other matrix

Returns:

The product of the two matrices

Throws:

java.lang.Exception

GetDeterminant

public double GetDeterminant()
                      throws java.lang.Exception

Get the determinant of the matrix. The matrix has to be a square matrix for determinant determination to be possible

Returns:

double The detereminant of the matrix

Throws:

java.lang.Exception

Inverse

public HWMMatrix Inverse()
                  throws java.lang.Exception

Get the inverse of the matrix. The matrix has to be a square matrix for inverse determination to be possible. This subroutine is from "Numerical recipes in C"

Returns:

HWMMatrix The inverse of the matrix

Throws:

java.lang.Exception

toString

public java.lang.String toString()

Represents the matix as a String. Useful in printing out the matrix

Overrides:

toString in class java.lang.Object

Returns:

The matrix as a String

writeExternal

public void writeExternal(java.io.ObjectOutput objOutput)
                   throws java.io.IOException

Save the persistent properties

Specified by:

writeExternal in interface java.io.Externalizable

Parameters:

objOutput - The stream to which data will be written

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput objInput)
                  throws java.lang.ClassNotFoundException,
                         java.io.IOException

Loads the version and then calls the appropriate read function for the version

Specified by:

readExternal in interface java.io.Externalizable

Parameters:

objInput - The stream from which data will be read

Throws:

IOException, - ClassNotFoundException

java.lang.ClassNotFoundException

java.io.IOException