title: Set X/Y axis in imshow in Python
body: <p>I think my problem is probably easy to solve, however I do not manage to set my X/Y axis using imshow in Python. </p>
  
  <p>For example, I have an image of size 61*61 and I want the axis to range from -30 to 30 and not from 0 to 61 as it is the case by default.</p>
  
  <p>Hope someone could help!</p>