Constructs (weak) witness complex for a given table of nearest landmarks with respect to witnesses. More...

Public Member Functions
	Witness_complex (Nearest_landmark_table_ const &nearest_landmark_table)
	Initializes member variables before constructing simplicial complex. More...

template<typename SimplicialComplexForWitness >
bool	create_complex (SimplicialComplexForWitness &complex, double max_alpha_square, std::size_t limit_dimension=std::numeric_limits< std::size_t >::max()) const
	Outputs the (weak) witness complex of relaxation 'max_alpha_square' in a simplicial complex data structure. More...

Detailed Description

template<class Nearest_landmark_table_>
class Gudhi::witness_complex::Witness_complex< Nearest_landmark_table_ >

Constructs (weak) witness complex for a given table of nearest landmarks with respect to witnesses.

Template Parameters

Nearest_landmark_table_ needs to be a range of a range of pairs of nearest landmarks and distances. The class Nearest_landmark_table_::value_type must be a copiable range. The range of pairs must admit a member type 'iterator'. The dereference type of the pair range iterator needs to be 'std::pair<std::size_t, double>'.

Examples: example_nearest_landmark_table.cpp.

Constructor & Destructor Documentation

◆ Witness_complex()

template<class Nearest_landmark_table_ >

Gudhi::witness_complex::Witness_complex< Nearest_landmark_table_ >::Witness_complex ( Nearest_landmark_table_ const & nearest_landmark_table )

inline

Initializes member variables before constructing simplicial complex.

Records nearest landmark table.

Parameters

[in] nearest_landmark_table needs to be a range (one entry per witness) of sorted ranges of pairs of nearest landmarks and distances. The class Nearest_landmark_table_::value_type must be a copiable range. The range of pairs must admit a member type 'iterator'. The dereference type of the pair range iterator needs to be 'std::pair<std::size_t, double>' where the first element is the index of the landmark, and the second its (squared) distance to the witness.

Member Function Documentation

◆ create_complex()

template<class Nearest_landmark_table_ >

template<typename SimplicialComplexForWitness >

bool Gudhi::witness_complex::Witness_complex< Nearest_landmark_table_ >::create_complex	(	SimplicialComplexForWitness &	complex,
		double	max_alpha_square,
		std::size_t	limit_dimension = `std::numeric_limits<std::size_t>::max()`
	)		const

inline

Outputs the (weak) witness complex of relaxation 'max_alpha_square' in a simplicial complex data structure.

The function returns true if the construction is successful and false otherwise.