I'm not sure if my code is correct, I think it might have gone to an infinite loop, but there are a lot of iterations like almost half a million.Please have a look at this code because it's been 2 hours,no luck.

This is the code

N=100; phi is a 10x100 matrix and q is a 10x500 matrix

I got the values of both phi and q and am able to plot them too.

I would be really grateful if you could help me on this one.

for t=1:500
    for i=1:N+1
        z(t,i)=0;
          for j=1:10
            z(t,i)=z(t,i)+phi(j,i).*q(j,t);

            end
      end
  end

[Kaushik Lakshminarasimhan]

Your code has an error. i goes from 1:101, but phi(j,i) does not exist when i=101.

What is it that you want to compute? May be you don't need loops.

[Likhit Pilli]

I need z ,z is 500x101 matrix but thanks for looking into it. :D I got the result it took upto 4 hours though.God!

[Roger Stafford]

As I pointed out in my answer, what you are doing is equivalent to matrix multiplication, and Matlab’s matrix multiplication operator, ‘*’, should be much faster.

Answer 1

[Roger Stafford]

This is what is known as matrix multiplication:

   z = (q.’)*phi;