decreasing the number of for-loops

I've written a program having some loops. I aim to decrease the number of loops as well as the run-time of program. How can I do this?? a part of this mentioend program is as below:

 for t = 1:T
   for i = 1:M
      for j = 1:M
        Pr{t}(i,j) = 1 / sqrt(2*pi*S(1,t)) * exp(-1/(q(i,t)-f(j,t))^2);   
      end
    end
  end

Thanks,

[Jan]

I've formatted the code. Please use the "{} Code" button to apply the correct formatting. Thanks.

Answer 1

[Jan]

for t = 1:T
  Pr{t} = 1 / sqrt(2*pi*S(1,t)) * exp(-1 ./ (bsxfun(@minus, q(:,t), f(:,t).').^2);
end

Please test this. I cannot run Matlab currently.

[EDITED] Small typo in the BSXFUN arguments.

[som]

Dear Jan, it doesn't work appropriately.

[Jan]

Posting the error message would be fine. Be aware, that I cannot run the code, because you did not provide any values for the variables. But when I cannot run the code, I cannot see the error message, which contains useful imformation to locate and fix the problem.

Anyhow, I've found one typo in the code and fixed it.