title: Sort Coordinates Points in Matlab
body: <p>What I want to do is to sort these coordinates points:</p>
  
  <p>Measured coordinates (x,y)= (2,2),(2,3),(1,2),(1,3),(2,1),(1,1),(3,2),(3,3),(3 ,1)</p>
  
  <p>I need to get sequences or trajectories of this points to follow them by iteration.</p>