tour_length | R Documentation |
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, ...)
x |
a TSP problem or a TOUR. |
... |
further arguments are currently unused. |
order |
an object of class |
tsp |
as TSP object. |
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
.
Michael Hahsler
Other TOUR:
TOUR()
,
cut_tour()
,
solve_TSP()
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)
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