Problems with GA function (global optimization toolbox)

I am trying to execute the global optimization toolbox function ga, but my FITNESSFUNCTION has another non-parameterized values. Specifically I want to call another function with multiple parameters inside the calling of ga function :

 FITNESSFUNCTION = @(x1,x2,x3) mod_sol(x1, x2, x3, DSSCircuit, DSSText, canb(1), cand(1), i, s1); 
 [x_sol, f_sol] = ga(FITNESSFUNCTION,3, [], [], [], [],lb, ub, [], [], opts);

the parameters to be optmized are x1, x2 and x3, but I need doing some other calculus with the variables DSSCircuit, DSSText, canb(1), cand(1), i et s1 in order to evaluate the fitness function

[Walter Roberson]

What difficulty are you encountering? That syntax looks appropriate.

[Jose Vivas]

There is the error

Error in balvolag_v1>@(x1,x2,x3)mod_sol(x1,x2,x3,DSSCircuit,DSSText,canb(1),cand(1),i,s1) (line 58)
    fitness = @(x1,x2,x3) mod_sol(x1, x2, x3, DSSCircuit, DSSText, canb(1), cand(1), i, s1)

Error in createAnonymousFcn>@(x)fcn(x,FcnArgs{:}) (line 11)
fcn_handle = @(x) fcn(x,FcnArgs{:});

Error in makeState (line 47)
            firstMemberScore = FitnessFcn(state.Population(initScoreProvided+1,:));

Error in galincon (line 17)
state = makeState(GenomeLength,FitnessFcn,Iterate,output.problemtype,options);

Error in ga (line 359)
            [x,fval,exitFlag,output,population,scores] = galincon(FitnessFcn,nvars, ...

Error in balvolag_v1 (line 59)
    [x_sol, f_sol] = ga(fitness,3, [], [], [], [],lb, ub, [], [], opts);

Caused by:
    Failure in initial user-supplied fitness function evaluation. GA cannot continue.

Thanks

[jgg]

It looks like there's a problem in your mod_sol function, specifically with balvolag_v1 which you haven't included.

[Walter Roberson]

Not quite, balvolag_v1 appears to be the name of the file that contains the calls the user shows.

The problem is something to do with mod_sol, such as if mod_sol cannot be found, or one of the named variables does not exist at the time the anonymous function is created.

[Jose Vivas]

I Finally found the error, on the handler definition, it must be

FITNESSFUNCTION = @(x) mod_sol(x1, x2, x3, DSSCircuit, DSSText, canb(1), cand(1), i, s1);

instead

FITNESSFUNCTION = @(x1,x2,x3) mod_sol(x1, x2, x3, DSSCircuit, DSSText, canb(1), cand(1), i, s1);

thanks a lot to jgg and Walter Roberson by your suggestions

[Walter Roberson]

More likely you would need

FITNESSFUNCTION = @(x) mod_sol(x(1), x(2), x(3), DSSCircuit, DSSText, canb(1), cand(1), i, s1);