juce::dsp::Matrix< ElementType > Class Template Reference

Detailed Description

template<typename ElementType>
class juce::dsp::Matrix< ElementType >

General matrix and vectors class, meant for classic math manipulation such as additions, multiplications, and linear systems of equations solving.

See also

LinearAlgebra

---

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

• juce_dsp/maths/juce_Matrix.h

Public Member Functions
	Matrix (size_t numRows, size_t numColumns)
	Creates a new matrix with a given number of rows and columns.
	Matrix (size_t numRows, size_t numColumns, const ElementType *dataPointer)
	Creates a new matrix with a given number of rows and columns, with initial data coming from an array, stored in row-major order.
	Matrix (const Matrix &)=default
	Creates a copy of another matrix.
	Matrix (Matrix &&) noexcept=default
	Moves a copy of another matrix.
Matrix &	operator= (const Matrix &)=default
	Creates a copy of another matrix.
Matrix &	operator= (Matrix &&) noexcept=default
	Moves another matrix into this one.
size_t	getNumRows () const noexcept
	Returns the number of rows in the matrix.
size_t	getNumColumns () const noexcept
	Returns the number of columns in the matrix.
Array< size_t >	getSize () const noexcept
	Returns an Array of 2 integers with the number of rows and columns in the matrix.
void	clear () noexcept
	Fills the contents of the matrix with zeroes.
Matrix &	swapRows (size_t rowOne, size_t rowTwo) noexcept
	Swaps the contents of two rows in the matrix and returns a reference to itself.
Matrix &	swapColumns (size_t columnOne, size_t columnTwo) noexcept
	Swaps the contents of two columns in the matrix and returns a reference to itself.
ElementType	operator() (size_t row, size_t column) const noexcept
	Returns the value of the matrix at a given row and column (for reading).
ElementType &	operator() (size_t row, size_t column) noexcept
	Returns the value of the matrix at a given row and column (for modifying).
ElementType *	getRawDataPointer () noexcept
	Returns a pointer to the raw data of the matrix object, ordered in row-major order (for modifying).
const ElementType *	getRawDataPointer () const noexcept
	Returns a pointer to the raw data of the matrix object, ordered in row-major order (for reading).
Matrix &	operator+= (const Matrix &other) noexcept
	Addition of two matrices.
Matrix &	operator-= (const Matrix &other) noexcept
	Subtraction of two matrices.
Matrix &	operator*= (ElementType scalar) noexcept
	Scalar multiplication.
Matrix	operator+ (const Matrix &other) const
	Addition of two matrices.
Matrix	operator- (const Matrix &other) const
	Addition of two matrices.
Matrix	operator* (ElementType scalar) const
	Scalar multiplication.
Matrix	operator* (const Matrix &other) const
	Matrix multiplication.
Matrix &	hadarmard (const Matrix &other) noexcept
	Does a hadarmard product with the receiver and other and stores the result in the receiver.
bool	operator== (const Matrix &other) const noexcept
bool	isSquare () const noexcept
	Tells if the matrix is a square matrix.
bool	isVector () const noexcept
	Tells if the matrix is a vector.
bool	isOneColumnVector () const noexcept
	Tells if the matrix is a one column vector.
bool	isOneRowVector () const noexcept
	Tells if the matrix is a one row vector.
bool	isNullMatrix () const noexcept
	Tells if the matrix is a null matrix.
bool	solve (Matrix &b) const noexcept
	Solves a linear system of equations represented by this object and the argument b, using various algorithms depending on the size of the arguments.
String	toString () const
	Returns a String displaying in a convenient way the matrix contents.
ElementType *	begin () noexcept
ElementType *	end () noexcept
const ElementType *	begin () const noexcept
const ElementType *	end () const noexcept

Static Public Member Functions
static Matrix	identity (size_t size)
	Creates the identity matrix.
static Matrix	toeplitz (const Matrix &vector, size_t size)
	Creates a Toeplitz Matrix from a vector with a given squared size.
static Matrix	hankel (const Matrix &vector, size_t size, size_t offset=0)
	Creates a squared size x size Hankel Matrix from a vector with an optional offset.
static Matrix	hadarmard (const Matrix &a, const Matrix &b)
	Does a hadarmard product with a and b returns the result.
static bool	compare (const Matrix &a, const Matrix &b, ElementType tolerance=0) noexcept
	Compare to matrices with a given tolerance.

Constructors and Destructors

Matrix() [1/4]

template<typename ElementType>

juce::dsp::Matrix< ElementType >::Matrix ( size_t numRows, size_t numColumns )

inline

Creates a new matrix with a given number of rows and columns.

References clear().

Referenced by compare(), hadarmard(), hadarmard(), hankel(), identity(), Matrix(), Matrix(), operator*(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator=(), operator=(), operator==(), solve(), swapColumns(), swapRows(), and toeplitz().

Matrix() [2/4]

template<typename ElementType>

juce::dsp::Matrix< ElementType >::Matrix ( size_t numRows, size_t numColumns, const ElementType * dataPointer )

inline

Creates a new matrix with a given number of rows and columns, with initial data coming from an array, stored in row-major order.

Matrix() [3/4]

template<typename ElementType>

juce::dsp::Matrix< ElementType >::Matrix ( const Matrix< ElementType > & )

default

Creates a copy of another matrix.

References Matrix().

Matrix() [4/4]

template<typename ElementType>

juce::dsp::Matrix< ElementType >::Matrix ( Matrix< ElementType > && )

defaultnoexcept

Moves a copy of another matrix.

References Matrix().

Member Functions

operator=() [1/2]

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::operator= ( const Matrix< ElementType > & )

default

Creates a copy of another matrix.

References Matrix().

operator=() [2/2]

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::operator= ( Matrix< ElementType > && )

defaultnoexcept

Moves another matrix into this one.

References Matrix().

identity()

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::identity ( size_t size )

static

Creates the identity matrix.

References identity(), and Matrix().

Referenced by identity().

toeplitz()

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::toeplitz ( const Matrix< ElementType > & vector, size_t size )

static

Creates a Toeplitz Matrix from a vector with a given squared size.

References Matrix(), and toeplitz().

Referenced by toeplitz().

hankel()

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::hankel ( const Matrix< ElementType > & vector, size_t size, size_t offset = 0 )

static

Creates a squared size x size Hankel Matrix from a vector with an optional offset.

Parameters

vector	The vector from which the Hankel matrix should be generated. Its number of rows should be at least 2 * (size - 1) + 1
size	The size of resulting square matrix.
offset	An optional offset into the given vector.

References hankel(), and Matrix().

Referenced by hankel().

getNumRows()

template<typename ElementType>

size_t juce::dsp::Matrix< ElementType >::getNumRows ( ) const

inlinenoexcept

Returns the number of rows in the matrix.

References getNumRows().

Referenced by getNumRows().

getNumColumns()

template<typename ElementType>

size_t juce::dsp::Matrix< ElementType >::getNumColumns ( ) const

inlinenoexcept

Returns the number of columns in the matrix.

getSize()

template<typename ElementType>

Array< size_t > juce::dsp::Matrix< ElementType >::getSize ( ) const

inlinenoexcept

Returns an Array of 2 integers with the number of rows and columns in the matrix.

clear()

template<typename ElementType>

void juce::dsp::Matrix< ElementType >::clear ( )

inlinenoexcept

Fills the contents of the matrix with zeroes.

References juce::zeromem().

Referenced by Matrix().

swapRows()

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::swapRows ( size_t rowOne, size_t rowTwo )

noexcept

Swaps the contents of two rows in the matrix and returns a reference to itself.

References Matrix().

swapColumns()

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::swapColumns ( size_t columnOne, size_t columnTwo )

noexcept

Swaps the contents of two columns in the matrix and returns a reference to itself.

References Matrix().

operator()() [1/2]

template<typename ElementType>

ElementType juce::dsp::Matrix< ElementType >::operator() ( size_t row, size_t column ) const

inlinenoexcept

Returns the value of the matrix at a given row and column (for reading).

References juce::column, jassert, and juce::row.

operator()() [2/2]

template<typename ElementType>

ElementType & juce::dsp::Matrix< ElementType >::operator() ( size_t row, size_t column )

inlinenoexcept

Returns the value of the matrix at a given row and column (for modifying).

References juce::column, jassert, and juce::row.

getRawDataPointer() [1/2]

template<typename ElementType>

ElementType * juce::dsp::Matrix< ElementType >::getRawDataPointer ( )

inlinenoexcept

Returns a pointer to the raw data of the matrix object, ordered in row-major order (for modifying).

getRawDataPointer() [2/2]

template<typename ElementType>

const ElementType * juce::dsp::Matrix< ElementType >::getRawDataPointer ( ) const

inlinenoexcept

Returns a pointer to the raw data of the matrix object, ordered in row-major order (for reading).

operator+=()

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::operator+= ( const Matrix< ElementType > & other )

inlinenoexcept

Addition of two matrices.

References Matrix().

operator-=()

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::operator-= ( const Matrix< ElementType > & other )

inlinenoexcept

Subtraction of two matrices.

References Matrix().

operator*=()

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::operator*= ( ElementType scalar )

inlinenoexcept

Scalar multiplication.

References begin(), end(), Matrix(), and x.

operator+()

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::operator+ ( const Matrix< ElementType > & other ) const

inline

Addition of two matrices.

References Matrix().

operator-()

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::operator- ( const Matrix< ElementType > & other ) const

inline

Addition of two matrices.

References Matrix().

operator*() [1/2]

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::operator* ( ElementType scalar ) const

inline

Scalar multiplication.

References Matrix().

operator*() [2/2]

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::operator*

(

const Matrix< ElementType > &

other

)

const

Matrix multiplication.

References Matrix().

hadarmard() [1/2]

template<typename ElementType>

Matrix & juce::dsp::Matrix< ElementType >::hadarmard ( const Matrix< ElementType > & other )

inlinenoexcept

Does a hadarmard product with the receiver and other and stores the result in the receiver.

References Matrix().

Referenced by hadarmard().

hadarmard() [2/2]

template<typename ElementType>

Matrix juce::dsp::Matrix< ElementType >::hadarmard ( const Matrix< ElementType > & a, const Matrix< ElementType > & b )

inlinestatic

Does a hadarmard product with a and b returns the result.

References hadarmard(), and Matrix().

compare()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::compare ( const Matrix< ElementType > & a, const Matrix< ElementType > & b, ElementType tolerance = 0 )

staticnoexcept

Compare to matrices with a given tolerance.

References Matrix().

Referenced by operator==().

operator==()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::operator== ( const Matrix< ElementType > & other ) const

inlinenoexcept

References compare(), and Matrix().

isSquare()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::isSquare ( ) const

inlinenoexcept

Tells if the matrix is a square matrix.

isVector()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::isVector ( ) const

inlinenoexcept

Tells if the matrix is a vector.

References isOneColumnVector(), and isOneRowVector().

isOneColumnVector()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::isOneColumnVector ( ) const

inlinenoexcept

Tells if the matrix is a one column vector.

Referenced by isVector().

isOneRowVector()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::isOneRowVector ( ) const

inlinenoexcept

Tells if the matrix is a one row vector.

Referenced by isVector().

isNullMatrix()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::isNullMatrix ( ) const

inlinenoexcept

Tells if the matrix is a null matrix.

solve()

template<typename ElementType>

bool juce::dsp::Matrix< ElementType >::solve ( Matrix< ElementType > & b ) const

noexcept

Solves a linear system of equations represented by this object and the argument b, using various algorithms depending on the size of the arguments.

The matrix must be a square matrix N times N, and b must be a vector N times 1, with the coefficients of b. After the execution of the algorithm, the vector b will contain the solution.

Returns true if the linear system of equations was successfully solved.

References Matrix().

toString()

template<typename ElementType>

String juce::dsp::Matrix< ElementType >::toString

(

)

const

Returns a String displaying in a convenient way the matrix contents.

begin() [1/2]

template<typename ElementType>

ElementType * juce::dsp::Matrix< ElementType >::begin ( )

inlinenoexcept

Referenced by end(), and operator*=().

end() [1/2]

template<typename ElementType>

ElementType * juce::dsp::Matrix< ElementType >::end ( )

inlinenoexcept

Referenced by operator*=().

begin() [2/2]

template<typename ElementType>

const ElementType * juce::dsp::Matrix< ElementType >::begin ( ) const

inlinenoexcept

end() [2/2]

template<typename ElementType>

const ElementType * juce::dsp::Matrix< ElementType >::end ( ) const

inlinenoexcept

References begin().