index.html

## index.html
<!DOCTYPE html>
<html>
<head>
	<title>Testing d3.js in Leaflet.js</title>

	<link rel="stylesheet" href="leaflet.css"></link>
        <script src="http://mbostock.github.com/d3/d3.v2.js?2.8.1"></script>
	<script src="http://code.leafletjs.com/leaflet-0.3.1/leaflet.js"></script>
	<style type="text/css">
		path
		{
  fill: #E02A2A;
  stroke: #fff;
		}

	</style>
</head>
<body>

	<div id="map" style="width: 600px; height: 600px;position:relative"></div>


<script type="text/javascript">

		var cloudmadeUrl = 'http://{s}.tile.cloudmade.com/BC9A493B41014CAABB98F0471D759707/997/256/{z}/{x}/{y}.png',
				cloudmadeAttribution = 'Map data &copy; 2011 OpenStreetMap contributors, Imagery &copy; 2011 CloudMade',
				cloudmade = new L.TileLayer(cloudmadeUrl, {maxZoom: 18, attribution: cloudmadeAttribution});

			var map = new L.Map('map', {

				center: new L.LatLng( 47.0176,2.3427,6),
				zoom: 5,
				layers: [cloudmade]
			});


	var svg = d3.select(map.getPanes().overlayPane).append("svg"),
    g = svg.append("g");

d3.json("taxa_json.json", function(collection) {
  var bounds = d3.geo.bounds(collection),
      path = d3.geo.path().projection(project).pointRadius(function (d) {return d.properties.count/50});
console.warn(path)

  var feature = g.selectAll("path")
      .data(collection.features)
    .enter().append("path");

  map.on("viewreset", reset);
  reset();

  // Reposition the SVG to cover the features.
  function reset() {
  	console.warn(bounds)
    var bottomLeft = project(bounds[0]),
        topRight = project(bounds[1]);

    svg .attr("width", topRight[0] - bottomLeft[0])
        .attr("height", bottomLeft[1] - topRight[1])
        .style("margin-left", bottomLeft[0] + "px")
        .style("margin-top", topRight[1] + "px").attr("transform", "translate(" + -bottomLeft[0] + "," + -topRight[1] + ")");

     g .attr("transform", "translate(" + -bottomLeft[0] + "," + -topRight[1] + ")");

     feature.attr("d", path)
  }

  // Use Leaflet to implement a D3 geographic projection.
  function project(x) {
    var point = map.latLngToLayerPoint(new L.LatLng(x[1], x[0]));
    return [point.x, point.y];
  }


	})


	 </script>
</body>
</html>

## leaflet.css
/* required styles */

.leaflet-map-pane,
.leaflet-tile,
.leaflet-marker-icon,
.leaflet-marker-shadow,
.leaflet-tile-pane,
.leaflet-overlay-pane,
.leaflet-shadow-pane,
.leaflet-marker-pane,
.leaflet-popup-pane,
.leaflet-overlay-pane svg,
.leaflet-zoom-box,
.leaflet-image-layer { /* TODO optimize classes */
	position: absolute;
	}
.leaflet-container {
	overflow: hidden;
	}
.leaflet-tile-pane {
	-webkit-transform: translate3d(0,0,0);
	}
.leaflet-tile,
.leaflet-marker-icon,
.leaflet-marker-shadow {
	-moz-user-select: none;
	-webkit-user-select: none;
	user-select: none;
	}
.leaflet-marker-icon,
.leaflet-marker-shadow {
	display: block;
	}
.leaflet-clickable {
	cursor: pointer;

//	stroke: red;
	}
.leaflet-container img {
	max-width: auto;
	}

.leaflet-tile-pane { z-index: 2; }
.leaflet-overlay-pane { z-index: 3; }
.leaflet-shadow-pane { z-index: 4; }
.leaflet-marker-pane { z-index: 5; }
.leaflet-popup-pane { z-index: 6; }

.leaflet-zoom-box {
	width: 0;
	height: 0;
	}

.leaflet-tile {
	visibility: hidden;
	}
.leaflet-tile-loaded {
	visibility: inherit;
	}

a.leaflet-active {
	outline: 2px solid orange;
	}


/* Leaflet controls */

.leaflet-control {
	position: relative;
	z-index: 7;
	}
.leaflet-top,
.leaflet-bottom {
	position: absolute;
	}
.leaflet-top {
	top: 0;
	}
.leaflet-right {
	right: 0;
	}
.leaflet-bottom {
	bottom: 0;
	}
.leaflet-left {
	left: 0;
	}
.leaflet-control {
	float: left;
	clear: both;
	}
.leaflet-right .leaflet-control {
	float: right;
	}
.leaflet-top .leaflet-control {
	margin-top: 10px;
	}
.leaflet-bottom .leaflet-control {
	margin-bottom: 10px;
	}
.leaflet-left .leaflet-control {
	margin-left: 10px;
	}
.leaflet-right .leaflet-control {
	margin-right: 10px;
	}

.leaflet-control-zoom {
	padding: 5px;
	background: rgba(0, 0, 0, 0.25);

	-moz-border-radius: 7px;
	-webkit-border-radius: 7px;
	border-radius: 7px;
	}
.leaflet-control-zoom a {
	display: block;
	width: 19px;
	height: 19px;
	background-position: 50% 50%;
	background-repeat: no-repeat;
	background-color: rgba(255, 255, 255, 0.75);

	-moz-border-radius: 4px;
	-webkit-border-radius: 4px;
	border-radius: 4px;
	}
.leaflet-control-zoom a:hover {
	background-color: #fff;
	}
.leaflet-big-buttons .leaflet-control-zoom a {
	width: 27px;
	height: 27px;
	}
.leaflet-control-zoom-in {
	background-image: url(images/zoom-in.png);
	margin-bottom: 5px;
	}
.leaflet-control-zoom-out {
	background-image: url(images/zoom-out.png);
	}

.leaflet-container .leaflet-control-attribution {
	margin: 0;
	padding: 0 5px;

	font: 11px/1.5 "Helvetica Neue", Arial, Helvetica, sans-serif;
	color: #333;

	background-color: rgba(255, 255, 255, 0.7);

	-moz-box-shadow: 0 0 7px #ccc;
	-webkit-box-shadow: 0 0 7px #ccc;
	box-shadow: 0 0 7px #ccc;
	}


/* Fade animations */

.leaflet-fade-anim .leaflet-tile {
	opacity: 0;

	-webkit-transition: opacity 0.2s linear;
	-moz-transition: opacity 0.2s linear;
	-o-transition: opacity 0.2s linear;
	transition: opacity 0.2s linear;
	}
.leaflet-fade-anim .leaflet-tile-loaded {
	opacity: 1;
	}

.leaflet-fade-anim .leaflet-popup {
	opacity: 0;

	-webkit-transition: opacity 0.2s linear;
	-moz-transition: opacity 0.2s linear;
	-o-transition: opacity 0.2s linear;
	transition: opacity 0.2s linear;
	}
.leaflet-fade-anim .leaflet-map-pane .leaflet-popup {
	opacity: 1;
	}

.leaflet-zoom-anim .leaflet-tile {
	-webkit-transition: none;
	-moz-transition: none;
	-o-transition: none;
	transition: none;
	}

.leaflet-zoom-anim .leaflet-objects-pane {
	visibility: hidden;
	}


/* Popup layout */

.leaflet-popup {
	position: absolute;
	text-align: center;
	-webkit-transform: translate3d(0,0,0);
	}
.leaflet-popup-content-wrapper {
	padding: 1px;
	text-align: left;
	}
.leaflet-popup-content {
	margin: 19px;
	}
.leaflet-popup-tip-container {
	margin: 0 auto;
	width: 40px;
	height: 16px;
	position: relative;
	overflow: hidden;
	}
.leaflet-popup-tip {
	width: 15px;
	height: 15px;
	padding: 1px;

	margin: -8px auto 0;

	-moz-transform: rotate(45deg);
	-webkit-transform: rotate(45deg);
	-ms-transform: rotate(45deg);
	-o-transform: rotate(45deg);
	transform: rotate(45deg);
	}
.leaflet-popup-close-button {
	position: absolute;
	top: 9px;
	right: 9px;

	width: 10px;
	height: 10px;

	overflow: hidden;
	}
.leaflet-popup-content p {
	margin: 18px 0;
	}


/* Visual appearance */

.leaflet-container {
	background: #ddd;
	}
.leaflet-container a {
	color: #0078A8;
	}
.leaflet-zoom-box {
	border: 2px dotted #05f;
	background: white;
	opacity: 0.5;
	}
.leaflet-popup-content-wrapper, .leaflet-popup-tip {
	background: white;

	box-shadow: 0 1px 10px #888;
	-moz-box-shadow: 0 1px 10px #888;
	 -webkit-box-shadow: 0 1px 14px #999;
	}
.leaflet-popup-content-wrapper {
	-moz-border-radius: 20px;
	-webkit-border-radius: 20px;
	border-radius: 20px;
	}
.leaflet-popup-content {
	font: 12px/1.4 "Helvetica Neue", Arial, Helvetica, sans-serif;
	}
.leaflet-popup-close-button {
	background: white url(images/popup-close.png);
	}

## taxa_json.json

      
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              taxa_json.json
            
          
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