title: How to plot the Wolfram Alpha grid? [MATLAB]
body: <p>I would like to plot for any function this grid :</p>
  
  <p>This is the special case for f(z) -> 1/z</p>
  
  <p><a href="https://i.stack.imgur.com/mfpVe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mfpVe.png" alt="enter image description here"></a></p>
  
  <p>This is a typical graph you can find on wolfram alpha. Nevertheless I don't know how to proceed. The idea would be to see where the lines of the complex grid of the 1-square is sent after applying f. </p>
  
  <p>One thing that could be great would be to add colors on the grid in order to see where the left part is sent. (like here : <a href="https://www.youtube.com/watch?v=JX3VmDgiFnY" rel="nofollow noreferrer">https://www.youtube.com/watch?v=JX3VmDgiFnY</a>)
  If you have any idea... thank you.</p>