Area select event for R leaflet in shiny
<p>I've played with the mouse click event in leaflet using the following code:</p>

<pre><code>mymap=leaflet()
selected_site=eventReactive(input$mymap_marker_click,{
      event &lt;- input$mymap_map_marker_click
      return(mydt[Long==event$lng &amp; Lat==event$lat,get("sites")])
    })
</code></pre>

<p>to display a plot from a <code>data.table</code>  after a click on a point of the map. 
Now, I'd like to select an entire area then display data binding to it.</p>

<p>In other terms, I'd like to select not a couple of (Lat,Long) but a series of (Lat1, Long1)....(Latn,Longn)</p>

<p>Is there a mean to do it in leaflet ?</p>

<p>Thanks in advance,</p>