Matrix Class Reference

A class for 2-dimensional matrices. More...

#include <Matrix.h>

List of all members.

Public Member Functions
	Matrix (int m, int n)
	Create a matrix Note that the elements of the matrix will be random, they have NOT been initialized to zero or any other value.
	Matrix (Matrix &M)
	Copy constructor.
	Matrix (Matrix *M)
	Similar to the copy constructor.
virtual	~Matrix ()
virtual void	print ()
	Prints the matrix on the screen.
virtual real &	elementAt (int i, int j)
	Value of a given cell in the matrix.
virtual Matrix *	multiply (Matrix &other)
	Multiplies the matrix with the given matrix and returns a new matrix.
virtual Matrix *	multiply (Matrix *other)
	Multiplies the matrix with the given matrix and returns a new matrix.
virtual void	multiply (real f)
	Multiplies the matrix with the scalar quantity provided.
virtual void	swapRows (int i, int j)
	Swaps the ith and jth row of the matrix.
virtual Matrix *	transpose ()
	Finds the transpose of the matrix You will have to deallocate the tranpose matrix with delete.
virtual Matrix *	inverse ()
	Finds the inverse of the matrix You will have to deallocate the inverse matrix with delete.
Static Public Member Functions
Matrix *	Identity (int n)
	Returns the identity matrix of size nxn.
Friends
std::ostream &	operator<< (std::ostream &s, Matrix &M)
	Prints matrix to the provided output stream.

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Detailed Description

A class for 2-dimensional matrices.

This probably isn't the most efficient way to do matrix operations, use of optimized matrix libraries would be preferable, but this should suffice for most applications

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Constructor & Destructor Documentation

Matrix (  int  m, int  n )

Create a matrix Note that the elements of the matrix will be random, they have NOT been initialized to zero or any other value. Parameters: m  Number of rows n  Number of columns

Matrix (  Matrix &  M  )

Copy constructor.

Matrix (  Matrix *  M  )

Similar to the copy constructor.

virtual ~Matrix (   )  [virtual]

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Member Function Documentation

virtual real& elementAt (  int  i, int  j )  [virtual]

Value of a given cell in the matrix. Parameters: i  The row in the matrix j  The column in the matrix Returns: Value of the element at the ith row and jth column

Matrix* Identity (  int  n  )  [static]

Returns the identity matrix of size nxn. You will have to deallocate the identity matrix with delete Parameters: n  The number of rows/columns in the matrix Returns: The square identity matrix of nxn

virtual Matrix* inverse (   )  [virtual]

Finds the inverse of the matrix You will have to deallocate the inverse matrix with delete. Uses the gaussian elmination technique to calculate the inverse Returns: A new matrix which is the inverse of this matrix Exceptions: Exception  if the matrix is not invertible.

virtual void multiply (  real  f  )  [virtual]

Multiplies the matrix with the scalar quantity provided.

virtual Matrix* multiply (  Matrix *  other  )  [virtual]

Multiplies the matrix with the given matrix and returns a new matrix. You will have to deallocate the product matrix with delete. Parameters: other  The matrix to multiply with Returns: The product matrix Exceptions: Exception  if the matrices cannot be multiplied

virtual Matrix* multiply (  Matrix &  other  )  [virtual]

Multiplies the matrix with the given matrix and returns a new matrix. You will have to deallocate the product matrix with delete. Parameters: other  The matrix to multiply with Returns: The product matrix Exceptions: Exception  if the matrices cannot be multiplied

virtual void print (   )  [virtual]

Prints the matrix on the screen.

virtual void swapRows (  int  i, int  j )  [virtual]

Swaps the ith and jth row of the matrix.

virtual Matrix* transpose (   )  [virtual]

Finds the transpose of the matrix You will have to deallocate the tranpose matrix with delete. Returns: A new matrix which is the transpose of the current matrix

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Friends And Related Function Documentation

std::ostream& operator<< (  std::ostream &  s, Matrix &  M )  [friend]

Prints matrix to the provided output stream.

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The documentation for this class was generated from the following file:

• Matrix.h

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