Index exceed matrix dimensions

I am writing this function and for loc = 5 it works fine for any number of popsizes but when I extend it to larger sizes it gives error "Index exceeds matrix dimension" kindly find the code below I tried to test it for popsize = 10 and I found that the f1 and f2 exceeds the 10 counts i dont know why and ofcourse f(i) only contains 10 values hence i get this error I hope I can find help;

    function [ f ] = VRPObj8Old1 (  x, popsize, loc, d, a)

f = zeros(popsize,1);

for i = 1: popsize

       f1 = 0;

     for l = 1:loc
             f1  =   f1 + x( 1, l, i) * a;

     end

      f2 = 0;
      for j = 1:loc       
           for o = 1:loc
                 f2 = f2 + x( j, o, i) * d(j , o);

           end

      end
      f(i) = f1 + f2;
  end

Answer 1

[Roger Stafford]

You will get that error message if either 'd' is not at least of size loc-by-loc, or 'x' is not at least of size loc-by-loc-by-popsize.

[Esraa Abdelhalim]

Actually I tested this on a 5by5 (loc=5) matrix and it worked fine but when I increase it to larger size it gives me that error ..

[Walter Roberson]

At the time of failure, what is size(x), size(d), size(a), and what are popsize and loc ?