title: How to plot a 3d graph of 2d fft transformations with a changing parameter
body: <p>I want to make a 3d plot of 2d plots of function y 
  where y is the dft of function z with having as axis k(x) w0(y) and amplitude(y)(z), where k is the dft variable in frequency domain and w0 is a changing parameter between 0 and 4*pi/45. </p>
  
  <pre><code>n=(0:255);
  x1 = exp(n.*(w1*1j));
  x2 = 0.8.*exp(n*((w2-w0)).*1j);
  z =hamming(256)*(x1+x2);
  y = fft(abs(z))
  </code></pre>