Error in travelling salesman problem cost function

Hello, please any one can help me ? i have travelling salesman cost function but when i implement it its give me error.

% cost function for traveling salesperson problem

% Haupt & Haupt

% 2003

function dist=tspfun(pop)

global iga x y

[Npop,Ncity]=size(pop);

tour=[pop pop(:,1)];

%distance between cities

for ic=1:Ncity

for id=1:Ncity

dcity(ic,id)=sqrt((x(ic)-x(id))^2+(y(ic)-y(id))^2);

end % id

end %ic

% cost of each chromosome for ic=1:Npop

dist(ic,1)=0;

for id=1:Ncity

dist(ic,1)=dist(ic)+dcity(tour(ic,id),tour(ic,id+1));

end % id

end % ic

Answer 1

[Alan Weiss]

It would be easier to read your code if you marked it with the {} Code button. And it would be easier to diagnose your problem if you showed us the entire error message that your solver gave, and how you called your function.

If you want to see working code for a travelling salesman problem, look at this example.

Good luck,

Alan Weiss

MATLAB mathematical toolbox documentation