title: leaflet location-filter example and draggable-resizeable rectangular area-select on a map
body: <p>I need to select an rectangular area on a map and identify markers that fall within that area.
  Ideally, rectangle should be draggable and resizeable.
  I am not too particular about the mapping and Google or Mapbox or Leaflet would all work just fine.</p>
  
  <p>I found location-filter for Leaflet (<a href="https://github.com/kajic/leaflet-locationfilter/" rel="nofollow">https://github.com/kajic/leaflet-locationfilter/</a>), which does seem to do the job. However, I couldn't find simple example code that shows how to use it. It has been used on tripcode.com but it is hard to make anything out of what is going on.
  Does anyone have any experience with location-filter? If so, can you please point me to simple example of how to use it?</p>
  
  <p>Are there similar examples for other mapping services particularly google maps?</p>
  
  <p>Thanks.</p>