title: How to visualise an arrow pointing to a certain coordinates(latitude, longitude), given pich and yaw
body: <p>I would like to know how to visualise an arrow pointing to a certain coordinates(latitude, longitude)
  while I'm moving around holding my handset.</p>
  
  <p>I'va calculated the pitch and yaw of the desired position. Now I want to know how to keep pointing to this position while moving.</p>
  
  <p>Regards,</p>