#include <CGAL/Classification/Feature/Eigenvalue.h>

Inherits from

Definition

Feature based on the eigenvalues of the covariance matrix of a local neighborhood.

Its default name is "eigenvalue_0", "eigenvalue_1" or "eigenvalue_2", depending on which eigenvalue is chosen in the constructor.

Public Member Functions
template<typename InputRange >
	Eigenvalue (const InputRange &input, const Classification::Local_eigen_analysis &eigen, unsigned int idx)
	Constructs the feature. More...

Public Member Functions inherited from CGAL::Classification::Feature_base
const std::string &	name () const
	returns the name of the feature (initialized to `abstract_feature` for `Feature_base`).

void	set_name (const std::string &name)
	changes the name of the feature.

virtual float	value (std::size_t index)=0
	returns the value taken by the feature for at the item for the item at position `index`. More...

Protected Attributes
const Classification::Local_eigen_analysis &	eigen

unsigned int	m_idx

template<typename InputRange >

CGAL::Classification::Feature::Eigenvalue::Eigenvalue	(	const InputRange &	input,
		const Classification::Local_eigen_analysis &	eigen,
		unsigned int	idx
	)

Constructs the feature.

Template Parameters

Input model of ConstRange. Its iterator type is RandomAccessIterator.

Parameters

input	input range.
eigen	class with precomputed eigenvectors and eigenvalues.
idx	index of the eigen value (0, 1 or 2).