TSP (version 1.2-4)

tour_length: Calculate the length of a tour

Description

Calculate the length of a TOUR for a TSP.

Usage

tour_length(x, ...)
# S3 method for TSP
tour_length(x, order, ...)
# S3 method for ATSP
tour_length(x, order, ...)
# S3 method for ETSP
tour_length(x, order, ...)
# S3 method for TOUR
tour_length(x, tsp = NULL, ...)
# S3 method for integer
tour_length(x, tsp = NULL, ...)

Arguments

x

a TSP problem or a TOUR.

...

further arguments are currently unused.

order

an object of class TOUR

tsp

as TSP object.

Author

Michael Hahsler

Details

If no tsp is specified, then the tour length stored in x as attribute "tour_length" is returned. If tsp is given then the tour length is recalculated using the specified TSP problem.

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

Other TOUR: TOUR(), cut_tour(), solve_TSP()

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)