CGAL 5.4.4 - Classification
CGAL::Classification::Cluster< ItemRange, ItemMap > Class Template Reference

#include <CGAL/Classification/Cluster.h>


Class that represent a cluster of items to be classified as a single atomic object.

A cluster is a set of indices of items inside an input range with random access.

Template Parameters
ItemRangemodel of ConstRange. Its iterator type is RandomAccessIterator. Its value type depends on the data that is classified (for example, CGAL::Point_3 or CGAL::Triangle_3).
ItemMapmodel of ReadablePropertyMap whose key type is the value type of the iterator of ItemRange and value type is the type of item to classify (for example, CGAL::Point_3).

Public Types

using Item = typename boost::property_traits< ItemMap >::value_type


 Cluster (const ItemRange &range, ItemMap item_map)
 Constructs an empty cluster of items. More...


void clear ()
 Clears the cluster.
void insert (std::size_t idx)
 inserts element of index idx in the cluster.


std::size_t size () const
 returns the number of items in the cluster.
std::size_t index (std::size_t i) const
 returns the index (in the input range) of the i^{th} element of the cluster.
const Itemoperator[] (std::size_t i) const
 returns the i^{th} item of the cluster.
const CGAL::Bbox_3bbox () const
 returns the bounding box of the cluster.


int training () const
 returns the input classification value used for training.
int & training ()
 returns a reference to the input classification value used for training.
int label () const
 returns the output classification value.
int & label ()
 returns a reference to the output classification value.

Constructor & Destructor Documentation

◆ Cluster()

template<typename ItemRange , typename ItemMap >
CGAL::Classification::Cluster< ItemRange, ItemMap >::Cluster ( const ItemRange &  range,
ItemMap  item_map 

Constructs an empty cluster of items.

Items in the clusters will be subsets of range.

rangeinput range.
item_mapproperty map to access the input items.