"But I do not know where is wrong"
The problem is caused by using GLOBAL variables instead of parameterizing the function properly:
One/some/all of those global variables are empty (probably because they are still set to the default empty array) and so the calculations on the RHS of these lines are empty:
f(1) = .. empty
f(2) = .. empty
f(3) = .. empty
But clearly you cannot assign zero elements to one element, thus the error.
The solution, as I stated at the start, is to parameterize the function properly:
S = load('var.mat');
fnh = @(x) evaluate_objective(x, S.Y, S.beta, S.lamda, S.sample1, S.r0);
out = ga(fnh,..)
But becuse your function has other errors, I cannot run this.
