TSP (version 1.1-4)

tour_length: Calculate the length of a tour

Description

Calculate the length of a tour given a TSP and an order.

Usage

tour_length(x, ...)
"tour_length"(x, tsp = NULL, ...)

Arguments

x

an object of class TOUR.

tsp

a TSP object of class TSP, ATSP or ETSP.

...

further arguments are currently unused.

Details

If no tsp is given, then the tour length stored in x as attribute "tour_length" is returned. If tsp is given then the tour length is recalculated. If a distance in the tour is infinite, the result is also infinite. If the tour contains positive and negative infinite distances then the method returns NA.

See Also

TOUR, TSP, ATSP and ETSP.

Examples

data("USCA50")

## original order
tour_length(solve_TSP(USCA50, method="identity"))

## length of a manually created (random) tour
tour <- TOUR(sample(seq(n_of_cities(USCA50))))
tour
tour_length(tour)
tour_length(tour, USCA50)