quentinc.geom
Class Matrix

java.lang.Object
  quentinc.geom.Matrix

public class Matrix
extends java.lang.Object

Class for manipulating matrix of arbitrary size

Constructor Summary

Matrix(double[][] d)
Create a new matrix with the 2D array given.

Matrix(int w, int h)
Create a new matrix with given number of rows and columns

Matrix(Vector v)
Create a new 3x1 matrix representing the given vector.

Method Summary

Matrix	add(Matrix m) Add the given matrix to this one.
Matrix	clone()
Matrix	divide(double d) Divide this matrix by a scalar value
boolean	equals(java.lang.Object o)
double	get(int row, int col) Get the value at the given position
int	getColumnCount() Get the number of columns
int	getRowCount() Get the number of rows
int	hashCode()
Matrix	multiply(double d) Multiply this matrix by a scalar value
Matrix	multiply(Matrix m) Multiply this matrix with the one given.
void	set(int row, int col, double value) Set the value at the given position
Matrix	subtract(Matrix m) Subtract the given matrix to this one
java.lang.String	toString() Return a string representation of this matrix.
Vector	toVector() Convert this matrix to a vector, using the first column as coefficiants.
Matrix	transpose() Create a new matrix which is the transposition of this one.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Matrix

public Matrix(int w,
              int h)

Create a new matrix with given number of rows and columns

Matrix

public Matrix(double[][] d)

Create a new matrix with the 2D array given.

Matrix

public Matrix(Vector v)

Create a new 3x1 matrix representing the given vector.

Method Detail

get

public double get(int row,
                  int col)

Get the value at the given position

set

public void set(int row,
                int col,
                double value)

Set the value at the given position

getColumnCount

public int getColumnCount()

Get the number of columns

getRowCount

public int getRowCount()

Get the number of rows

toVector

public Vector toVector()

Convert this matrix to a vector, using the first column as coefficiants.

toString

public java.lang.String toString()

Return a string representation of this matrix. This representation is like CSV.

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

add

public Matrix add(Matrix m)

Add the given matrix to this one.

subtract

public Matrix subtract(Matrix m)

Subtract the given matrix to this one

multiply

public Matrix multiply(double d)

Multiply this matrix by a scalar value

divide

public Matrix divide(double d)

Divide this matrix by a scalar value

clone

public Matrix clone()

Overrides:

clone in class java.lang.Object

transpose

public Matrix transpose()

Create a new matrix which is the transposition of this one.

multiply

public Matrix multiply(Matrix m)

Multiply this matrix with the one given. Return a new matrix.