operations_research::routing::TspLibParser Class Reference

#include <tsplib_parser.h>

Public Types
enum	Types {   TSP , ATSP , SOP , HCP ,   CVRP , TOUR , UNDEFINED_TYPE }
	Routing model types (cf. the link above for a description). More...

Public Member Functions
	TspLibParser ()
bool	LoadFile (absl::string_view file_name)
	Loads and parses a routing problem from a given file.
int	SizeFromFile (absl::string_view file_name) const
	Returns the number of nodes in the routing problem stored in a given file.
EdgeWeights	GetEdgeWeights () const
	Returns a function returning edge weights between nodes.
int	depot () const
	Returns the index of the depot.
int	size () const
	Returns the number of nodes in the current routing problem.
Types	type () const
	Returns the type of the current routing problem.
const std::vector< Coordinates3< double > > &	coordinates () const
int64_t	capacity () const
	Returns the capacity of the vehicles in the current routing problem.
int64_t	max_distance () const
	Returns the maximal distance vehicles can travel.
const std::vector< int64_t > &	demands () const
	Returns the demands (or quantities picked up) at each node.
std::set< std::pair< int, int > >	fixed_edges () const
const std::vector< std::vector< int > > &	edges () const
const std::string &	name () const
	Returns the name of the current routing model.
const std::string &	comments () const
	Returns the comments attached to the data.
std::string	BuildTourFromRoutes (absl::Span< const std::vector< int > > routes) const

Detailed Description

Definition at line 41 of file tsplib_parser.h.

Member Enumeration Documentation

Types

enum operations_research::routing::TspLibParser::Types

Routing model types (cf. the link above for a description).

Enumerator
TSP
ATSP
SOP
HCP
CVRP
TOUR
UNDEFINED_TYPE

Definition at line 44 of file tsplib_parser.h.

Constructor & Destructor Documentation

TspLibParser()

operations_research::routing::TspLibParser::TspLibParser

(

)

Definition at line 159 of file tsplib_parser.cc.

Member Function Documentation

BuildTourFromRoutes()

std::string operations_research::routing::TspLibParser::BuildTourFromRoutes

(

absl::Span< const std::vector< int > >

routes

)

const

Build a tour output in TSPLIB95 format from a vector of routes, a route being a sequence of node indices.

Definition at line 661 of file tsplib_parser.cc.

capacity()

int64_t operations_research::routing::TspLibParser::capacity ( ) const

inline

Returns the capacity of the vehicles in the current routing problem.

Definition at line 65 of file tsplib_parser.h.

comments()

const std::string & operations_research::routing::TspLibParser::comments ( ) const

inline

Returns the comments attached to the data.

Definition at line 79 of file tsplib_parser.h.

coordinates()

const std::vector< Coordinates3< double > > & operations_research::routing::TspLibParser::coordinates ( ) const

inline

Returns the coordinates of the nodes in the current routing problem (if they exist).

Definition at line 61 of file tsplib_parser.h.

demands()

const std::vector< int64_t > & operations_research::routing::TspLibParser::demands ( ) const

inline

Returns the demands (or quantities picked up) at each node.

Definition at line 69 of file tsplib_parser.h.

depot()

int operations_research::routing::TspLibParser::depot ( ) const

inline

Returns the index of the depot.

Definition at line 54 of file tsplib_parser.h.

edges()

const std::vector< std::vector< int > > & operations_research::routing::TspLibParser::edges ( ) const

inline

Returns edges of the graph on which Hamiltonian cycles need to be built. Edges are represented as adjacency lists for each node.

Definition at line 75 of file tsplib_parser.h.

fixed_edges()

std::set< std::pair< int, int > > operations_research::routing::TspLibParser::fixed_edges ( ) const

inline

Returns the pairs of nodes corresponding to forced edges (second node is directly after the first).

Definition at line 72 of file tsplib_parser.h.

GetEdgeWeights()

EdgeWeights operations_research::routing::TspLibParser::GetEdgeWeights ( ) const

inline

Returns a function returning edge weights between nodes.

Definition at line 52 of file tsplib_parser.h.

LoadFile()

bool operations_research::routing::TspLibParser::LoadFile

(

absl::string_view

file_name

)

Loads and parses a routing problem from a given file.

Definition at line 174 of file tsplib_parser.cc.

max_distance()

int64_t operations_research::routing::TspLibParser::max_distance ( ) const

inline

Returns the maximal distance vehicles can travel.

Definition at line 67 of file tsplib_parser.h.

name()

const std::string & operations_research::routing::TspLibParser::name ( ) const

inline

Returns the name of the current routing model.

Definition at line 77 of file tsplib_parser.h.

size()

int operations_research::routing::TspLibParser::size ( ) const

inline

Returns the number of nodes in the current routing problem.

Definition at line 56 of file tsplib_parser.h.

SizeFromFile()

int operations_research::routing::TspLibParser::SizeFromFile

(

absl::string_view

file_name

)

const

Returns the number of nodes in the routing problem stored in a given file.

Definition at line 185 of file tsplib_parser.cc.

type()

Types operations_research::routing::TspLibParser::type ( ) const

inline

Returns the type of the current routing problem.

Definition at line 58 of file tsplib_parser.h.

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The documentation for this class was generated from the following files:

• ortools/routing/parsers/tsplib_parser.h
• ortools/routing/parsers/tsplib_parser.cc