title: Cluster geographical locations(long/lat) which are within 30 min of commute to each other?
body: <p>I am trying to cluster geographical locations(long / lat) where the distance between data points in a cluster should be less than or equal to 30 min from each other. I can calculate duration between data points using google map api. How can I cluster those sites which are within 30 minutes commute from each other ?
  Image attached for reference:</p>
  
  <p><img src="https://i.stack.imgur.com/BOOKF.png" alt="Click here"></p>