Detailed Description

template<class T>
class mrpt::math::CSparseMatrixTemplate< T >

A sparse matrix container (with cells of any type), with iterators.

This class stores only those elements created by assigning them a value, for example: "M(2,3)=8;".

This class doesn't implement math operations since it's a generic sparse container, but it can be used to initialize the contents of a CSparse library-based matrix of type mrpt::math::CSparseMatrix.

Note that reading non-existing cell elements will return the default value (0 for numbers) and that cell will remain non-created in the matrix.

There is an additional method "exists(i,j)" to check whether a given element exists in the matrix.

See also: mrpt::math::MatrixBlockSparseCols, mrpt::math::CSparseMatrix, CSparseSymmetricalMatrix

Note: Methods marked as "Doesn't check bounds" mean that if an access to an element out of the matrix size is tried, an empty element will be assumed, but this will not raise any invalid memory access.

Definition at line 43 of file CSparseMatrixTemplate.h.

#include <mrpt/math/CSparseMatrixTemplate.h>

Inheritance diagram for mrpt::math::CSparseMatrixTemplate< T >:

Public Types
typedef std::map< std::pair< size_t, size_t >, T >	SparseMatrixMap
	Internal map type, used to store the actual matrix. More...

typedef SparseMatrixMap::const_iterator	const_iterator
	Const iterator to move through the matrix. More...

typedef SparseMatrixMap::const_reverse_iterator	const_reverse_iterator
	Const reverse iterator to move through the matrix. More...

Public Member Functions
	CSparseMatrixTemplate ()
	Basic constructor with no data. More...

	CSparseMatrixTemplate (size_t nR, size_t nC)
	Constructor with default size. More...

T	operator() (size_t r, size_t c) const
	Element access operator. More...

bool	exists (size_t r, size_t c) const
	Element access operator. More...

T &	operator() (size_t r, size_t c)
	Reference access operator. More...

size_t	getRowCount () const
	Returns the amount of rows in this matrix. More...

size_t	getColCount () const
	Returns the amount of columns in this matrix. More...

void	getRow (size_t nRow, std::vector< T > &vec) const
	Extracts a full row from the matrix. More...

void	getColumn (size_t nCol, std::vector< T > &vec) const
	Extracts a full column from the matrix. More...

void	insert (size_t row, size_t column, const T &obj)
	Inserts an element into the matrix. More...

template<class MATRIX_LIKE >
void	insertMatrix (size_t row, size_t column, const MATRIX_LIKE &mat)
	Inserts submatrix at a given location. More...

const_iterator	begin () const
	Returns an iterator which points to the starting point of the matrix. More...

const_iterator	end () const
	Returns an iterator which points to the end of the matrix. More...

const_reverse_iterator	rbegin () const
	Returns an iterator which points to the end of the matrix, and can be used to move backwards. More...

const_reverse_iterator	rend () const
	Returns an iterator which points to the starting point of the matrix, although it's the upper limit of the matrix since it's a reverse iterator. More...

void	setRow (size_t nRow, const std::vector< T > &vec, const T &nullObject=T())
	Inserts a full row into the matrix. More...

void	setColumn (size_t nCol, const std::vector< T > &vec, const T &nullObject=T())
	Inserts a full column into the matrix. More...

void	resize (size_t nRows, size_t nCols)
	Changes the size of the matrix. More...

CSparseMatrixTemplate< T >	operator() (size_t firstRow, size_t lastRow, size_t firstColumn, size_t lastColumn) const
	Extracts a submatrix form the matrix. More...

void	getAsVector (std::vector< T > &vec) const
	Gets a vector containing all the elements of the matrix, ignoring their position. More...

size_t	getNonNullElements () const
	Gets the amount of non-null elements inside the matrix. More...

bool	empty () const
	Are there no elements set to !=0 ? More...

size_t	getNullElements () const
	Gets the amount of null elements inside the matrix. More...

bool	isNull (size_t nRow, size_t nCol) const
	Checks whether an element of the matrix is the default object. More...

bool	isNotNull (size_t nRow, size_t nCol) const
	Checks whether an element of the matrix is not the default object. More...

void	clear ()
	Completely removes all elements, although maintaining the matrix's size. More...

void	purge (T nullObject=T())
	Checks each non-null elements against the basic objects, erasing unnecesary references to it. More...

Protected Attributes
size_t	mRows
	Size of the matrix. More...

size_t	mColumns

SparseMatrixMap	objectList
	Actual matrix. More...

Member Typedef Documentation

◆ const_iterator

template<class T>

typedef SparseMatrixMap::const_iterator mrpt::math::CSparseMatrixTemplate< T >::const_iterator

Const iterator to move through the matrix.

See also: CSparseMatrixTemplate::const_reverse_iterator

Definition at line 55 of file CSparseMatrixTemplate.h.

◆ const_reverse_iterator

template<class T>

typedef SparseMatrixMap::const_reverse_iterator mrpt::math::CSparseMatrixTemplate< T >::const_reverse_iterator

Const reverse iterator to move through the matrix.

See also: CSparseMatrixTemplate::const_iterator

Definition at line 61 of file CSparseMatrixTemplate.h.

◆ SparseMatrixMap

template<class T>

typedef std::map<std::pair<size_t, size_t>, T> mrpt::math::CSparseMatrixTemplate< T >::SparseMatrixMap

Internal map type, used to store the actual matrix.

Definition at line 50 of file CSparseMatrixTemplate.h.

Constructor & Destructor Documentation

◆ CSparseMatrixTemplate() [1/2]

template<class T>

mrpt::math::CSparseMatrixTemplate< T >::CSparseMatrixTemplate ( )

inline

Basic constructor with no data.

Size is set to (0,0).

Definition at line 77 of file CSparseMatrixTemplate.h.

◆ CSparseMatrixTemplate() [2/2]

template<class T>

mrpt::math::CSparseMatrixTemplate< T >::CSparseMatrixTemplate	(	size_t	nR,
		size_t	nC
	)

inline

Constructor with default size.

Definition at line 81 of file CSparseMatrixTemplate.h.

Member Function Documentation

◆ begin()

template<class T>

const_iterator mrpt::math::CSparseMatrixTemplate< T >::begin ( ) const

inline

Returns an iterator which points to the starting point of the matrix.

It's a const_iterator, so that the usar isn't able to modify the matrix content into an invalid state.

See also: end,rbegin,rend

Definition at line 206 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

Referenced by mrpt::math::CSparseMatrixTemplate< T >::operator()(), and mrpt::math::CSparseMatrixTemplate< T >::purge().

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◆ clear()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::clear ( )

inline

Completely removes all elements, although maintaining the matrix's size.

Definition at line 383 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

Referenced by mrpt::math::intersect().

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◆ empty()

template<class T>

bool mrpt::math::CSparseMatrixTemplate< T >::empty ( ) const

inline

Are there no elements set to !=0 ?

See also: getNullElements,isNull,isNotNull

Definition at line 350 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ end()

template<class T>

const_iterator mrpt::math::CSparseMatrixTemplate< T >::end ( ) const

inline

Returns an iterator which points to the end of the matrix.

It's a const_iterator, so that the usar isn't able to modify the matrix content into an invalid state.

See also: begin,rbegin,rend

Definition at line 213 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

Referenced by mrpt::math::CSparseMatrixTemplate< T >::operator()(), mrpt::math::CSparseSymmetricalMatrix< T >::operator()(), and mrpt::math::CSparseMatrixTemplate< T >::purge().

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◆ exists()

template<class T>

bool mrpt::math::CSparseMatrixTemplate< T >::exists	(	size_t	r,
		size_t	c
	)		const

inline

Element access operator.

Checks bounds.

Definition at line 96 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ getAsVector()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::getAsVector ( std::vector< T > & vec ) const

inline

Gets a vector containing all the elements of the matrix, ignoring their position.

Definition at line 333 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ getColCount()

template<class T>

size_t mrpt::math::CSparseMatrixTemplate< T >::getColCount ( ) const

inline

Returns the amount of columns in this matrix.

See also: getRowCount

Definition at line 123 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns.

Referenced by depthFirstSearch(), and mrpt::math::intersect().

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◆ getColumn()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::getColumn	(	size_t	nCol,
		std::vector< T > &	vec
	)		const

inline

Extracts a full column from the matrix.

See also: getColCount,getRow,setColumn

Exceptions

std::logic_error on out of range.

Definition at line 160 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ getNonNullElements()

template<class T>

size_t mrpt::math::CSparseMatrixTemplate< T >::getNonNullElements ( ) const

inline

Gets the amount of non-null elements inside the matrix.

See also: getNullElements,isNull,isNotNull

Definition at line 346 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

Referenced by mrpt::math::CSparseMatrixTemplate< T >::getNullElements(), and mrpt::math::intersect().

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◆ getNullElements()

template<class T>

size_t mrpt::math::CSparseMatrixTemplate< T >::getNullElements ( ) const

inline

Gets the amount of null elements inside the matrix.

See also: getNonNullElements,isNull,isNotNull

Definition at line 355 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::getNonNullElements(), mrpt::math::CSparseMatrixTemplate< T >::mColumns, and mrpt::math::CSparseMatrixTemplate< T >::mRows.

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◆ getRow()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::getRow	(	size_t	nRow,
		std::vector< T > &	vec
	)		const

inline

Extracts a full row from the matrix.

See also: getRowCount,getColumn,setRow

Exceptions

std::logic_error on out of range.

Definition at line 129 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ getRowCount()

template<class T>

size_t mrpt::math::CSparseMatrixTemplate< T >::getRowCount ( ) const

inline

Returns the amount of rows in this matrix.

See also: getColCount,getRow

Definition at line 118 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mRows.

Referenced by mrpt::math::intersect().

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◆ insert()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::insert	(	size_t	row,
		size_t	column,
		const T &	obj
	)

inline

Inserts an element into the matrix.

See also: operator()(size_t,size_t)

Definition at line 184 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::operator()().

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◆ insertMatrix()

template<class T>

template<class MATRIX_LIKE >

void mrpt::math::CSparseMatrixTemplate< T >::insertMatrix	(	size_t	row,
		size_t	column,
		const MATRIX_LIKE &	mat
	)

inline

Inserts submatrix at a given location.

Definition at line 191 of file CSparseMatrixTemplate.h.

◆ isNotNull()

template<class T>

bool mrpt::math::CSparseMatrixTemplate< T >::isNotNull	(	size_t	nRow,
		size_t	nCol
	)		const

inline

Checks whether an element of the matrix is not the default object.

See also: getNonNullElements,getNullElements,isNull

Definition at line 374 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

Referenced by depthFirstSearch().

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◆ isNull()

template<class T>

bool mrpt::math::CSparseMatrixTemplate< T >::isNull	(	size_t	nRow,
		size_t	nCol
	)		const

inline

Checks whether an element of the matrix is the default object.

See also: getNonNullElements,getNullElements,isNotNull

Exceptions

std::logic_error on out of range

Definition at line 364 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ operator()() [1/3]

template<class T>

T mrpt::math::CSparseMatrixTemplate< T >::operator()	(	size_t	r,
		size_t	c
	)		const

inline

Element access operator.

Doesn't check bounds.

Definition at line 85 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

Referenced by mrpt::math::CSparseMatrixTemplate< T >::insert().

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◆ operator()() [2/3]

template<class T>

T& mrpt::math::CSparseMatrixTemplate< T >::operator()	(	size_t	r,
		size_t	c
	)

inline

Reference access operator.

Checks for bounds.

Definition at line 107 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ operator()() [3/3]

template<class T>

CSparseMatrixTemplate<T> mrpt::math::CSparseMatrixTemplate< T >::operator()	(	size_t	firstRow,
		size_t	lastRow,
		size_t	firstColumn,
		size_t	lastColumn
	)		const

inline

Extracts a submatrix form the matrix.

See also: operator()(size_t,size_t)

Exceptions

std::logic_error on invalid bounds.

Definition at line 307 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::begin(), mrpt::math::CSparseMatrixTemplate< T >::end(), mrpt::math::CSparseMatrixTemplate< T >::mColumns, and mrpt::math::CSparseMatrixTemplate< T >::mRows.

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◆ purge()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::purge ( T nullObject = T() )

inline

Checks each non-null elements against the basic objects, erasing unnecesary references to it.

Definition at line 388 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::begin(), mrpt::math::CSparseMatrixTemplate< T >::end(), and mrpt::math::CSparseMatrixTemplate< T >::objectList.

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◆ rbegin()

template<class T>

const_reverse_iterator mrpt::math::CSparseMatrixTemplate< T >::rbegin ( ) const

inline

Returns an iterator which points to the end of the matrix, and can be used to move backwards.

It's a const_reverse_iterator, so that the usar isn't able to modify the matrix content into an invalid state.

See also: begin,end,rend

Definition at line 220 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ rend()

template<class T>

const_reverse_iterator mrpt::math::CSparseMatrixTemplate< T >::rend ( ) const

inline

Returns an iterator which points to the starting point of the matrix, although it's the upper limit of the matrix since it's a reverse iterator.

Also, it's a const_reverse_iterator, so that the usar isn't able to modify the matrix content into an invalid state.

See also: begin,end,rbegin

Definition at line 228 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ resize()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::resize	(	size_t	nRows,
		size_t	nCols
	)

inline

Changes the size of the matrix.

Definition at line 282 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

Referenced by mrpt::math::intersect(), and mrpt::math::CSparseSymmetricalMatrix< T >::resize().

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◆ setColumn()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::setColumn	(	size_t	nCol,
		const std::vector< T > &	vec,
		const T &	nullObject = `T()`
	)

inline

Inserts a full column into the matrix.

The third argument is used to specify a null object (which won't be inserted, since the matrix is sparse).

See also: getColumn

Exceptions

std::logic_error on out of range or wrong sized vector.

Definition at line 261 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

◆ setRow()

template<class T>

void mrpt::math::CSparseMatrixTemplate< T >::setRow	(	size_t	nRow,
		const std::vector< T > &	vec,
		const T &	nullObject = `T()`
	)

inline

Inserts a full row into the matrix.

The third argument is used to specify a null object (which won't be inserted, since the matrix is sparse).

See also: getRow

Exceptions

std::logic_error on out of range or wrong sized vector.

Definition at line 236 of file CSparseMatrixTemplate.h.

References mrpt::math::CSparseMatrixTemplate< T >::mColumns, mrpt::math::CSparseMatrixTemplate< T >::mRows, and mrpt::math::CSparseMatrixTemplate< T >::objectList.

Member Data Documentation

◆ mColumns

template<class T>

size_t mrpt::math::CSparseMatrixTemplate< T >::mColumns

protected

Definition at line 67 of file CSparseMatrixTemplate.h.

◆ mRows

template<class T>

size_t mrpt::math::CSparseMatrixTemplate< T >::mRows

protected

Size of the matrix.

Definition at line 67 of file CSparseMatrixTemplate.h.

◆ objectList

template<class T>

SparseMatrixMap mrpt::math::CSparseMatrixTemplate< T >::objectList

protected

Actual matrix.

Definition at line 71 of file CSparseMatrixTemplate.h.

Detailed Description

template<class T> class mrpt::math::CSparseMatrixTemplate< T >

Public Types

Public Member Functions

Protected Attributes

Member Typedef Documentation

◆ const_iterator

◆ const_reverse_iterator

◆ SparseMatrixMap

Constructor & Destructor Documentation

◆ CSparseMatrixTemplate() [1/2]

◆ CSparseMatrixTemplate() [2/2]

Member Function Documentation

◆ begin()

◆ clear()

◆ empty()

◆ end()

◆ exists()

◆ getAsVector()

◆ getColCount()

◆ getColumn()

◆ getNonNullElements()

◆ getNullElements()

◆ getRow()

◆ getRowCount()

◆ insert()

◆ insertMatrix()

◆ isNotNull()

◆ isNull()

◆ operator()() [1/3]

◆ operator()() [2/3]

◆ operator()() [3/3]

◆ purge()

◆ rbegin()

◆ rend()

◆ resize()

◆ setColumn()

◆ setRow()

Member Data Documentation

◆ mColumns

◆ mRows

◆ objectList

template<class T>
class mrpt::math::CSparseMatrixTemplate< T >