title: How to Sort Vector of Points Based on a Y-Axis?
body: <p>I have a group of coordinates for example : </p>
  
  <p>10,40; 9,27; 5,68; 7,55; 8,15;</p>
  
  <p>How do I sort those coordinates without losing the correct X-Axis of the sorted Y-Axis.</p>
  
  <p>From the example above I want to sort the coordinates so the correct output will be:</p>
  
  <p>8,15; 9,27; 10,40; 7,55; 5,68.</p>
  
  <p>Any suggestion will be greatly appreciated.
  Thank you.</p>