title: Getting an average trajectory from a group of trajectories
body: <p>I'm trying to obtain an average path given a group of similar paths of different lengths. Path data is only spatial, with no time attributed to each point. </p>
  
  <p>To put it simply, is there an algorithm that can find the red path given the blue paths?</p>
  
  <p>Blue Paths</p>
  
  <p><a href="https://i.stack.imgur.com/ksCOD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ksCOD.png" alt="enter image description here"></a></p>
  
  <p>Red Path</p>
  
  <p><a href="https://i.stack.imgur.com/BQnyP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BQnyP.png" alt="enter image description here"></a></p>