SubGraph< GR, NF, EF > Class Template Reference

Detailed Description

template<typename GR, typename NF, typename EF>
class lemon::SubGraph< GR, NF, EF >

SubGraph can be used for hiding nodes and edges in a graph. A bool node map and a bool edge map must be specified, which define the filters for nodes and edges. Only the nodes and edges with true filter value are shown in the subgraph. The edges that are incident to hidden nodes are also filtered out. This adaptor conforms to the Graph concept.

The adapted graph can also be modified through this adaptor by adding or removing nodes or edges, unless the GR template parameter is set to be const.

This class provides only linear time counting for nodes, edges and arcs.

Template Parameters

GR	The type of the adapted graph. It must conform to the Graph concept. It can also be specified to be const.
NF	The type of the node filter map. It must be a bool (or convertible) node map of the adapted graph. The default type is GR::NodeMap<bool>.
EF	The type of the edge filter map. It must be a bool (or convertible) edge map of the adapted graph. The default type is GR::EdgeMap<bool>.

Note

The Node, Edge and Arc types of this adaptor and the adapted graph are convertible to each other.

See Also

FilterNodes

FilterEdges

#include <lemon/adaptors.h>

Public Types
typedef GR	Graph
	The type of the adapted graph.
typedef NF	NodeFilterMap
	The type of the node filter map.
typedef EF	EdgeFilterMap
	The type of the edge filter map.

Public Member Functions
	SubGraph (GR &graph, NF &node_filter, EF &edge_filter)
	Constructor.
void	status (const Node &n, bool v) const
	Sets the status of the given node.
void	status (const Edge &e, bool v) const
	Sets the status of the given edge.
bool	status (const Node &n) const
	Returns the status of the given node.
bool	status (const Edge &e) const
	Returns the status of the given edge.
void	disable (const Node &n) const
	Disables the given node.
void	disable (const Edge &e) const
	Disables the given edge.
void	enable (const Node &n) const
	Enables the given node.
void	enable (const Edge &e) const
	Enables the given edge.

Related Functions
(Note that these are not member functions.)
template<typename GR , typename NF , typename EF >
SubGraph< const GR, NF, EF >	subGraph (const GR &graph, NF &node_filter, EF &edge_filter)
	Returns a read-only SubGraph adaptor.

Constructor & Destructor Documentation

SubGraph ( GR &  graph, NF &  node_filter, EF &  edge_filter  )

inline

Creates a subgraph for the given graph with the given node and edge filter maps.

Member Function Documentation

void status ( const Node &  n, bool  v  ) const

inline

This function sets the status of the given node. It is done by simply setting the assigned value of n to v in the node filter map.

void status ( const Edge &  e, bool  v  ) const

inline

This function sets the status of the given edge. It is done by simply setting the assigned value of e to v in the edge filter map.

bool status ( const Node &  n ) const

inline

This function returns the status of the given node. It is true if the given node is enabled (i.e. not hidden).

bool status ( const Edge &  e ) const

inline

This function returns the status of the given edge. It is true if the given edge is enabled (i.e. not hidden).

void disable ( const Node &  n ) const

inline

This function disables the given node in the subdigraph, so the iteration jumps over it. It is the same as status(n, false).

void disable ( const Edge &  e ) const

inline

This function disables the given edge in the subgraph, so the iteration jumps over it. It is the same as status(e, false).

void enable ( const Node &  n ) const

inline

This function enables the given node in the subdigraph. It is the same as status(n, true).

void enable ( const Edge &  e ) const

inline

This function enables the given edge in the subgraph. It is the same as status(e, true).