tour_length function

Calculate the length of a tour

Calculate the length of a TOUR for a TSP .

tour_length(x, ...)

## S3 method for class 'TSP'
tour_length(x, order, ...)

## S3 method for class 'ATSP'
tour_length(x, order, ...)

## S3 method for class 'ETSP'
tour_length(x, order, ...)

## S3 method for class 'TOUR'
tour_length(x, tsp = NULL, ...)

## S3 method for class '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.

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.

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)

See Also

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

Author(s)

Michael Hahsler