matlab - Integer Permutation GA Fitness Function -

after developing initial population of random integers, facing problem of linking individual of each population fitness function , arguments give fitness function. have following creation , fitness functions, when run ga workspace giving following error "failure in initial user-supplied fitness function evaluation. ga cannot continue":

function pop = facilities_arrangement(nvars,fitnessfcn,options)   %creates population of facility arrangement permutations.    totalpopulationsize = 50;   n = nvars;   pop = cell(totalpopulationsize,1);   = 1:totalpopulationsize   pop{i} = randperm(n);   end    function scores = facility_layout_fitness(cr,distances)   % custom fitness function facility layout problem.    % calculates fitness of individual. fitness total product   % between closeness rating of facilities , distances    % travelled 1 facility centroids    % using rectilinear distance.     pop = cell(totalpopulationsize,1);   scores = zeros(size(pop,1),1);   totalpopulationsize = 50;   = 1:totalpopulationsize   order = pop{i};   = cr(order,order);   tcf = sum(a(:).*distances(:));   scores(i) = tcf;   end 

you can call ga function without giving intial population.

but, if want use 1 (and agree it's idea) have sure initial population satisfies problem constraints, , it's enough solution start. way doing it, generating random population, bring solver.

you can call:

x = ga(fitnessfcn,nvars) 

if facility location problem, seems, should use kind of greedy algorithm try generate feasible solution feed genetic algorithm.