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())

void	resize (Index newSize)

void	resize (Index rows, Index cols)

Scalar	sum () const

void	swap (SparseVector &other)

	~SparseVector ()

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

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

StorageIndex *	innerIndexPtr ()

const StorageIndex *	innerIndexPtr () const

StorageIndex *	innerNonZeroPtr ()

const StorageIndex *	innerNonZeroPtr () const

bool	isCompressed () const

Index	nonZeros () const

StorageIndex *	outerIndexPtr ()

const StorageIndex *	outerIndexPtr () const

Scalar *	valuePtr ()

const Scalar *	valuePtr () const

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

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

Index	innerSize () const

bool	isVector () const

const Product< SparseVector< _Scalar, _Options, _StorageIndex >, OtherDerived, AliasFreeProduct >	operator* (const 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

Index	rows () const

Index	size () const

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

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

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

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

EIGEN_CONSTEXPR Index	rows () const EIGEN_NOEXCEPT

EIGEN_CONSTEXPR Index	size () const EIGEN_NOEXCEPT

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 tolerance epsilon

◆ resize() [1/2]

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()

◆ resize() [2/2]

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)

◆ sum()

template<typename _Scalar , int _Options, typename _Index >

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

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 swapping 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 >