title: Get bounding box of coordinates, ignoring fringe locations
body: <p>I'm trying to create a bounding box around a set of coordinates, but I want to 'focus' on groups of coordinates and ignore any that are way off and would mess up the map. (Imagine a map of 10 spots on a city and 1 somewhere in another country)</p>
  
  <p>What would be the best way to build the top-left and bottom-right values? </p>