Detailed Description

template<typename _Scalar, int _Options, typename _StorageIndex>
class Eigen::SparseVector< _Scalar, _Options, _StorageIndex >

a sparse vector class

Template Parameters

_Scalar the scalar type, i.e. the type of the coefficients

See http://www.netlib.org/linalg/html_templates/node91.html for details on the storage scheme.

This class can be extended with the help of the plugin mechanism described on the page Extending MatrixBase (and other classes) by defining the preprocessor symbol EIGEN_SPARSEVECTOR_PLUGIN.

Inheritance diagram for Eigen::SparseVector< _Scalar, _Options, _StorageIndex >:

Public Member Functions
Scalar &	coeffRef (Index i)

void	conservativeResize (Index newSize)

Index	nonZeros () const

void	prune (const Scalar &reference, const RealScalar &epsilon=NumTraits< RealScalar >::dummy_precision())
	More...

void	resize (Index rows, Index cols)

void	resize (Index newSize)

Scalar	sum () const

void	swap (SparseVector &other)

	~SparseVector ()

Public Member Functions inherited from Eigen::SparseCompressedBase< SparseVector< _Scalar, _Options, _StorageIndex > >
const Map< const Array< Scalar, Dynamic, 1 > >	coeffs () const

Map< Array< Scalar, Dynamic, 1 > >	coeffs ()

const StorageIndex *	innerIndexPtr () const

StorageIndex *	innerIndexPtr ()

const StorageIndex *	innerNonZeroPtr () const

StorageIndex *	innerNonZeroPtr ()

bool	isCompressed () const

Index	nonZeros () const

const StorageIndex *	outerIndexPtr () const

StorageIndex *	outerIndexPtr ()

const Scalar *	valuePtr () const

Scalar *	valuePtr ()

Public Member Functions inherited from Eigen::SparseMatrixBase< SparseVector< _Scalar, _Options, _StorageIndex > >
const CwiseBinaryOp< CustomBinaryOp, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	binaryExpr (const Eigen::SparseMatrixBase< OtherDerived > &other, const CustomBinaryOp &func=CustomBinaryOp()) const

BlockXpr	block (Index startRow, Index startCol, Index blockRows, Index blockCols)

const ConstBlockXpr	block (Index startRow, Index startCol, Index blockRows, Index blockCols) const
	This is the const version of block(Index,Index,Index,Index). */.

FixedBlockXpr< NRows, NCols >::Type	block (Index startRow, Index startCol)

const ConstFixedBlockXpr< NRows, NCols >::Type	block (Index startRow, Index startCol) const
	This is the const version of block<>(Index, Index). */.

FixedBlockXpr< NRows, NCols >::Type	block (Index startRow, Index startCol, Index blockRows, Index blockCols)

const ConstFixedBlockXpr< NRows, NCols >::Type	block (Index startRow, Index startCol, Index blockRows, Index blockCols) const
	This is the const version of block<>(Index, Index, Index, Index).

BlockXpr	bottomLeftCorner (Index cRows, Index cCols)

const ConstBlockXpr	bottomLeftCorner (Index cRows, Index cCols) const
	This is the const version of bottomLeftCorner(Index, Index).

FixedBlockXpr< CRows, CCols >::Type	bottomLeftCorner ()

const ConstFixedBlockXpr< CRows, CCols >::Type	bottomLeftCorner () const
	This is the const version of bottomLeftCorner<int, int>().

FixedBlockXpr< CRows, CCols >::Type	bottomLeftCorner (Index cRows, Index cCols)

const ConstFixedBlockXpr< CRows, CCols >::Type	bottomLeftCorner (Index cRows, Index cCols) const
	This is the const version of bottomLeftCorner<int, int>(Index, Index).

BlockXpr	bottomRightCorner (Index cRows, Index cCols)

const ConstBlockXpr	bottomRightCorner (Index cRows, Index cCols) const
	This is the const version of bottomRightCorner(Index, Index).

FixedBlockXpr< CRows, CCols >::Type	bottomRightCorner ()

const ConstFixedBlockXpr< CRows, CCols >::Type	bottomRightCorner () const
	This is the const version of bottomRightCorner<int, int>().

FixedBlockXpr< CRows, CCols >::Type	bottomRightCorner (Index cRows, Index cCols)

const ConstFixedBlockXpr< CRows, CCols >::Type	bottomRightCorner (Index cRows, Index cCols) const
	This is the const version of bottomRightCorner<int, int>(Index, Index).

RowsBlockXpr	bottomRows (Index n)

ConstRowsBlockXpr	bottomRows (Index n) const
	This is the const version of bottomRows(Index).

NRowsBlockXpr< N >::Type	bottomRows (Index n=N)

ConstNRowsBlockXpr< N >::Type	bottomRows (Index n=N) const
	This is the const version of bottomRows<int>().

CastXpr< NewType >::Type	cast () const

ColXpr	col (Index i)

ConstColXpr	col (Index i) const
	This is the const version of col().

Index	cols () const

ConjugateReturnType	conjugate () const
	More...

const CwiseAbsReturnType	cwiseAbs () const

const CwiseAbs2ReturnType	cwiseAbs2 () const

const CwiseBinaryOp< std::equal_to< Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	cwiseEqual (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseScalarEqualReturnType	cwiseEqual (const Scalar &s) const

const CwiseInverseReturnType	cwiseInverse () const

const CwiseBinaryOp< internal::scalar_max_op< Scalar, Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	cwiseMax (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseBinaryOp< internal::scalar_max_op< Scalar, Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const ConstantReturnType >	cwiseMax (const Scalar &other) const

const CwiseBinaryOp< internal::scalar_min_op< Scalar, Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	cwiseMin (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseBinaryOp< internal::scalar_min_op< Scalar, Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const ConstantReturnType >	cwiseMin (const Scalar &other) const

const CwiseBinaryOp< std::not_equal_to< Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	cwiseNotEqual (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseBinaryOp< internal::scalar_product_op< SparseVector< _Scalar, _Options, _StorageIndex > ::Scalar, OtherDerived ::Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	cwiseProduct (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseBinaryOp< internal::scalar_quotient_op< Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	cwiseQuotient (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseSignReturnType	cwiseSign () const

const CwiseSqrtReturnType	cwiseSqrt () const

const internal::eval< SparseVector< _Scalar, _Options, _StorageIndex > >::type	eval () const

SegmentReturnType	head (Index n)

ConstSegmentReturnType	head (Index n) const
	This is the const version of head(Index).

FixedSegmentReturnType< N >::Type	head (Index n=N)

ConstFixedSegmentReturnType< N >::Type	head (Index n=N) const
	This is the const version of head<int>().

const ImagReturnType	imag () const
	More...

NonConstImagReturnType	imag ()
	More...

Index	innerSize () const

InnerVectorReturnType	innerVector (Index outer)

const ConstInnerVectorReturnType	innerVector (Index outer) const

InnerVectorsReturnType	innerVectors (Index outerStart, Index outerSize)

const ConstInnerVectorsReturnType	innerVectors (Index outerStart, Index outerSize) const

bool	isVector () const

ColsBlockXpr	leftCols (Index n)

ConstColsBlockXpr	leftCols (Index n) const
	This is the const version of leftCols(Index).

NColsBlockXpr< N >::Type	leftCols (Index n=N)

ConstNColsBlockXpr< N >::Type	leftCols (Index n=N) const
	This is the const version of leftCols<int>().

ColsBlockXpr	middleCols (Index startCol, Index numCols)

ConstColsBlockXpr	middleCols (Index startCol, Index numCols) const
	This is the const version of middleCols(Index,Index).

NColsBlockXpr< N >::Type	middleCols (Index startCol, Index n=N)

ConstNColsBlockXpr< N >::Type	middleCols (Index startCol, Index n=N) const
	This is the const version of middleCols<int>().

RowsBlockXpr	middleRows (Index startRow, Index n)

ConstRowsBlockXpr	middleRows (Index startRow, Index n) const
	This is the const version of middleRows(Index,Index).

NRowsBlockXpr< N >::Type	middleRows (Index startRow, Index n=N)

ConstNRowsBlockXpr< N >::Type	middleRows (Index startRow, Index n=N) const
	This is the const version of middleRows<int>().

const CwiseBinaryOp< internal::scalar_boolean_and_op, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	operator&& (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseBinaryOp< internal::scalar_product_op< Scalar, T >, SparseVector< _Scalar, _Options, _StorageIndex >, Constant< T > >	operator* (const T &scalar) const

const Product< SparseVector< _Scalar, _Options, _StorageIndex >, OtherDerived, AliasFreeProduct >	operator* (const SparseMatrixBase< OtherDerived > &other) const

const CwiseBinaryOp< sum< Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	operator+ (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const CwiseBinaryOp< difference< Scalar >, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	operator- (const Eigen::SparseMatrixBase< OtherDerived > &other) const

const NegativeReturnType	operator- () const

const CwiseBinaryOp< internal::scalar_quotient_op< Scalar, T >, SparseVector< _Scalar, _Options, _StorageIndex >, Constant< T > >	operator/ (const T &scalar) const

const CwiseBinaryOp< internal::scalar_boolean_or_op, const SparseVector< _Scalar, _Options, _StorageIndex >, const OtherDerived >	operator\|\| (const Eigen::SparseMatrixBase< OtherDerived > &other) const

Index	outerSize () const

const SparseView< SparseVector< _Scalar, _Options, _StorageIndex > >	pruned (const Scalar &reference=Scalar(0), const RealScalar &epsilon=NumTraits< Scalar >::dummy_precision()) const

RealReturnType	real () const
	More...

NonConstRealReturnType	real ()
	More...

ColsBlockXpr	rightCols (Index n)

ConstColsBlockXpr	rightCols (Index n) const
	This is the const version of rightCols(Index).

NColsBlockXpr< N >::Type	rightCols (Index n=N)

ConstNColsBlockXpr< N >::Type	rightCols (Index n=N) const
	This is the const version of rightCols<int>().

RowXpr	row (Index i)

ConstRowXpr	row (Index i) const
	This is the const version of row(). */.

Index	rows () const

SegmentReturnType	segment (Index start, Index n)

ConstSegmentReturnType	segment (Index start, Index n) const
	This is the const version of segment(Index,Index).

FixedSegmentReturnType< N >::Type	segment (Index start, Index n=N)

ConstFixedSegmentReturnType< N >::Type	segment (Index start, Index n=N) const
	This is the const version of segment<int>(Index).

Index	size () const

SegmentReturnType	tail (Index n)

ConstSegmentReturnType	tail (Index n) const
	This is the const version of tail(Index).

FixedSegmentReturnType< N >::Type	tail (Index n=N)

ConstFixedSegmentReturnType< N >::Type	tail (Index n=N) const
	This is the const version of tail<int>.

BlockXpr	topLeftCorner (Index cRows, Index cCols)

const ConstBlockXpr	topLeftCorner (Index cRows, Index cCols) const
	This is the const version of topLeftCorner(Index, Index).

FixedBlockXpr< CRows, CCols >::Type	topLeftCorner ()

const ConstFixedBlockXpr< CRows, CCols >::Type	topLeftCorner () const
	This is the const version of topLeftCorner<int, int>().

FixedBlockXpr< CRows, CCols >::Type	topLeftCorner (Index cRows, Index cCols)

const ConstFixedBlockXpr< CRows, CCols >::Type	topLeftCorner (Index cRows, Index cCols) const
	This is the const version of topLeftCorner<int, int>(Index, Index).

BlockXpr	topRightCorner (Index cRows, Index cCols)

const ConstBlockXpr	topRightCorner (Index cRows, Index cCols) const
	This is the const version of topRightCorner(Index, Index).

FixedBlockXpr< CRows, CCols >::Type	topRightCorner ()

const ConstFixedBlockXpr< CRows, CCols >::Type	topRightCorner () const
	This is the const version of topRightCorner<int, int>().

FixedBlockXpr< CRows, CCols >::Type	topRightCorner (Index cRows, Index cCols)

const ConstFixedBlockXpr< CRows, CCols >::Type	topRightCorner (Index cRows, Index cCols) const
	This is the const version of topRightCorner<int, int>(Index, Index).

RowsBlockXpr	topRows (Index n)

ConstRowsBlockXpr	topRows (Index n) const
	This is the const version of topRows(Index).

NRowsBlockXpr< N >::Type	topRows (Index n=N)

ConstNRowsBlockXpr< N >::Type	topRows (Index n=N) const
	This is the const version of topRows<int>().

SparseSymmetricPermutationProduct< SparseVector< _Scalar, _Options, _StorageIndex >, Upper\|Lower >	twistedBy (const PermutationMatrix< Dynamic, Dynamic, StorageIndex > &perm) const

const CwiseUnaryOp< CustomUnaryOp, const SparseVector< _Scalar, _Options, _StorageIndex > >	unaryExpr (const CustomUnaryOp &func=CustomUnaryOp()) const
	Apply a unary operator coefficient-wise. More...

const CwiseUnaryView< CustomViewOp, const SparseVector< _Scalar, _Options, _StorageIndex > >	unaryViewExpr (const CustomViewOp &func=CustomViewOp()) const

Public Member Functions inherited from Eigen::EigenBase< SparseVector< _Scalar, _Options, _StorageIndex > >
Index	cols () const

SparseVector< _Scalar, _Options, _StorageIndex > &	derived ()

const SparseVector< _Scalar, _Options, _StorageIndex > &	derived () const

Index	rows () const

Index	size () const

Additional Inherited Members
Public Types inherited from Eigen::SparseMatrixBase< SparseVector< _Scalar, _Options, _StorageIndex > >
typedef internal::traits< SparseVector< _Scalar, _Options, _StorageIndex > >::StorageIndex	StorageIndex

typedef Scalar	value_type

Public Types inherited from Eigen::EigenBase< SparseVector< _Scalar, _Options, _StorageIndex > >
typedef Eigen::Index	Index
	The interface type of indices. More...

Protected Member Functions inherited from Eigen::SparseCompressedBase< SparseVector< _Scalar, _Options, _StorageIndex > >
	SparseCompressedBase ()

Constructor & Destructor Documentation

◆ ~SparseVector()

template<typename _Scalar, int _Options, typename _StorageIndex>

Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::~SparseVector ( )

inline

Destructor

Member Function Documentation

◆ coeffRef()

template<typename _Scalar, int _Options, typename _StorageIndex>

Scalar& Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::coeffRef ( Index i )

inline

Returns: a reference to the coefficient value at given index i This operation involes a log(rho*size) binary search. If the coefficient does not exist yet, then a sorted insertion into a sequential buffer is performed.

This insertion might be very costly if the number of nonzeros above i is large.

◆ conservativeResize()

template<typename _Scalar, int _Options, typename _StorageIndex>

void Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::conservativeResize ( Index newSize )

inline

Resizes the sparse vector to newSize, while leaving old values untouched.

If the size of the vector is decreased, then the storage of the out-of bounds coefficients is kept and reserved. Call .data().squeeze() to free extra memory.

See also: reserve(), setZero()

◆ nonZeros()

template<typename _Scalar, int _Options, typename _StorageIndex>

Index Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::nonZeros ( ) const

inline

Returns: the number of non zero coefficients

◆ prune()

template<typename _Scalar, int _Options, typename _StorageIndex>

void Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::prune	(	const Scalar &	reference,
		const RealScalar &	epsilon = `NumTraits<RealScalar>::dummy_precision()`
	)

inline

Suppresses all nonzeros which are much smaller than reference under the tolerence epsilon

◆ resize() [1/2]

template<typename _Scalar, int _Options, typename _StorageIndex>

void Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::resize	(	Index	rows,
		Index	cols
	)

inline

Resizes the sparse vector to rows x cols

This method is provided for compatibility with matrices. For a column vector, cols must be equal to 1. For a row vector, rows must be equal to 1.

See also: resize(Index)

◆ resize() [2/2]

template<typename _Scalar, int _Options, typename _StorageIndex>

void Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::resize ( Index newSize )

inline

Resizes the sparse vector to newSize This method deletes all entries, thus leaving an empty sparse vector

See also: conservativeResize(), setZero()

◆ sum()

template<typename _Scalar , int _Options, typename _Index >

internal::traits< SparseVector< _Scalar, _Options, _Index > >::Scalar Eigen::SparseVector< _Scalar, _Options, _Index >::sum ( ) const

Overloaded for performance

◆ swap()

template<typename _Scalar, int _Options, typename _StorageIndex>

void Eigen::SparseVector< _Scalar, _Options, _StorageIndex >::swap ( SparseVector< _Scalar, _Options, _StorageIndex > & other )

inline

Swaps the values of *this and other. Overloaded for performance: this version performs a shallow swap by swaping pointers and attributes only.

See also: SparseMatrixBase::swap()

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

Detailed Description

template<typename _Scalar, int _Options, typename _StorageIndex> class Eigen::SparseVector< _Scalar, _Options, _StorageIndex >

Public Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ ~SparseVector()

Member Function Documentation

◆ coeffRef()

◆ conservativeResize()

◆ nonZeros()

◆ prune()

◆ resize() [1/2]

◆ resize() [2/2]

◆ sum()

◆ swap()

template<typename _Scalar, int _Options, typename _StorageIndex>
class Eigen::SparseVector< _Scalar, _Options, _StorageIndex >