gusucode.com > 十大算法matlab程序说明 > 十大算法matlab程序说明/遗传退火法/一个Matlab的模拟退火算法工具箱/examples/tsp/route_cost.m
function Ew = route_cost(X,W) % Ew = route_cost(X,W) % Method for tsp example supplied with SA Tools. % See http://www.frostconcepts.com/software for information on SA Tools. % % Ew = route_cost(X,W) ; % % X = {N, D} % N = # of cities. % D = distance matrix. D(i,j) = distance from city i to j. % W = a route, a permutation of the indicies 1:N % % Ew = energy corresponding to W. % Computed by summing the distances along the route. % N = X{1} ; D = X{2} ; Ew = D(W(N),W(1)) ; for i=1:(N-1) Ew = Ew + D(W(i),W(i+1)) ; end