Printing X(w) and not X(k) from a written DFT algorithm

So I am trying to write a DFT algorithm not using Matlab pre-defined FFT functions. I believe I have gotten achieved it using matrix multiplications, however when I graph the result I am only able to get for X(k) and I want to graph it for values of X(omega).

N = 12; Wk = exp(-j*2*pi/N); W = zeros(N,N); X = zeros(N,1);

for n = 0:1:N-1 if n <= 2 X(n+1, 1) = cos(n*pi); else X(n+1, 1) = 0; end for k = 0:1:N-1 W(n+1,k+1) = Wk^(n*k); end end

Fw = (W*X); figure

plot(abs(Fw)); xlabel ('Bin numbers(k)')