tsp_att48


tsp_att48, a C code which returns the (x,y) coordinates of the cities that constitute the AT&T 48 state challenge for the Traveling Salesman Problem (TSP). The optimal path is approximately 33,523 units in length. Graphics files are created for processing by gnuplot().

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

tsp_att48 is available in a C version and a C++ version and a Fortran77 version and a Fortran90 version and a MATLAB version and an Octave version and a Python version and an R version.

Related Data and Programs:

tsp_att48_test

concorde, examples which call concorde(), which solves the traveling salesman problem (TSP), mixed integer programming, and related network optimization problems.

tsp, a dataset directory which contains test data for the traveling salesperson problem (TSP) including the AT&T 48 state capital test, and Dantzig's 42 city test;

tsp_brute, a C code which is given a city location table, and solves a (small) traveling salesperson problem (TSP), using brute force. Graphics files are created for processing by gnuplot().

tsp_dantzig42, a C code which returns the (x,y) coordinates of the cities that constitute the Dantzig 42 state challenge for the Traveling Salesman Problem (TSP). Graphics files are created for processing by gnuplot().

tsp_display, a C code which displays the solution of a Traveling Salesman Problem (TSP). Graphics files are created for processing by gnuplot().

tsp_nearest, a C code which is given a city location table, and solves a small traveling salesperson problem (TSP) using the nearest neighbor algorithm. It picks a starting city at random, and then successively visits the nearest unvisited city. Graphics files are created for processing by gnuplot().

Reference:

  1. William Cook,
    In Pursuit of the Traveling Salesman,
    Princeton University Press, 2012,
    ISBN13 978-0-691-16352-9.
  2. Gerhard Reinelt,
    TSPLIB - A Traveling Salesman Problem Library,
    ORSA Journal on Computing,
    Volume 3, Number 4, Fall 1991, pages 376-384.

Source Code:


Last revised on 17 June 2026.