title: Matplotlib changing axis ticks
body: <p>I have a few lines of making a scatter plot out of a collection of points (x<sub>0</sub>,y<sub>0</sub>), ... (x<sub>n</sub>,y<sub>n</sub>).</p>
  
  <p>The truth is that I am only interested in the x scale as it is the scale on which the graph is power law behaved but after plotting I would like to replace the ticks on the x-axis by some other function of <code>$x_i$</code>.</p>
  
  <p>How could I do so?</p>