Ebola Case map

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
  <script src='https://api.mapbox.com/mapbox.js/v2.2.3/mapbox.js'></script>
  <link href='https://api.mapbox.com/mapbox.js/v2.2.3/mapbox.css' rel='stylesheet' />
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    #map { 
      position:absolute; 
      width: 100%;
      height: 100%;
    }
  </style>
</head>

<body>
  
  <input type="checkbox" name="usa" onClick="usa_click()">USA<br>
  <input type="checkbox" name="liberia" onClick="liberia_click()">Liberia<br>
  <input type="checkbox" name="spain" onClick="spain_click()">Spain<br>
  
  <div id="map"></div>
  <script>
   
	var usaFlag = false
  var liberiaFlag = false
  var spainFlag = false
  var radius = 6
 
    
    L.mapbox.accessToken = 'pk.eyJ1IjoiZW5qYWxvdCIsImEiOiJjaWhtdmxhNTIwb25zdHBsejk0NGdhODJhIn0.2-F2hS_oTZenAWc0BMf_uw'
    
    //Setup our Leaflet map using Mapbox.js
    var map = L.mapbox.map('map', 'mapbox.light')
    .setView([20,-30], 3);
    
    // Setup our svg layer that we can manipulate with d3
    var svg = d3.select(map.getPanes().overlayPane)
      .append("svg");
    var g = svg.append("g").attr("class", "leaflet-zoom-hide");
    
function project(ll) {
      //console.log("ll:", ll);
      // our data came from csv, make it Leaflet friendly
      //var a = [+ll.lat, +ll.lon];
      var b = [+ll[1], +ll[0]];
      // convert it to pixel coordinates
      var point = map.latLngToLayerPoint(L.latLng(b))
      return point;

}
  function usa_click() {
     usaFlag = !usaFlag
     return activate()
  }
    
function liberia_click() {
     liberiaFlag = !liberiaFlag
     return activate()
  }
    
function spain_click() {
     spainFlag = !spainFlag
     return activate()
  }

// We reproject our data with the updated projection from leaflet
        g.selectAll("circle.dot")
        .attr({
          cx: function(d) { 
            console.log("d.geometry.coordinates", d.geometry.coordinates)
            return project(d.geometry.coordinates).x
              		 
          },
          cy: function(d) { 
            return project(d.geometry.coordinates).y
          },
        })
      }

// re-render our visualization whenever the view changes
      map.on("viewreset", function() {
        render()
      })
      map.on("move", function() {
        render()
      })

// render our initial visualization
      render()
      
    })}
    //activate()
  </script>
</body>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js

https://api.mapbox.com/mapbox.js/v2.2.3/mapbox.js