title: Display numbers instead of points using pyplot
body: <p>I have a nx2 dimension array representing n points with their two coordinates x, y. Using pyplot, I would like to display the number n of my points instead of just the points with no way to know which is what.</p>
  
  <p>I have found a way to legend my points but really what I would like is only the number.</p>
  
  <p>How can I achieve this ?</p>