Marker styles using pointToLayer

Set marker style in a featureLayer with pointToLayer.

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Marker styles using pointToLayer</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.mapbox.com/mapbox.js/v3.1.1/mapbox.js'></script>
<link href='https://api.mapbox.com/mapbox.js/v3.1.1/mapbox.css' rel='stylesheet' />
<style>
  body { margin:0; padding:0; }
  #map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>

<div id='map'></div>
<script>
L.mapbox.accessToken = '<your access token here>';
var map = L.mapbox.map('map', 'mapbox.streets')
.setView([45.522, -122.677], 3);

var geojson = {
    "type": "FeatureCollection",
    "features" : [{
        "type": "Feature",
        "geometry": { 
        "type": "Point", 
        "coordinates": [-120.086,37.857]
        }, 
        "properties": {
            "title" : "AREA 10",
            "radius" : 10
        }
    },{
        "type": "Feature",
        "geometry": { 
            "type": "Point", 
            "coordinates": [-117.609,34.317]
        }, 
        "properties": {
            "title" : "GOBBLERS",
            "radius" : 50
        }
    },{
          "type": "Feature",
          "geometry": { 
            "type": "Point", 
            "coordinates": [-122.677,45.522]
        }, 
        "properties": {
          "title" : "FRENCH GULCH",
          "radius" : 10
        }
    }]
};

// load the above GeoJSON into the featureLayer and use pointToLayer
// to pass in the features properties and geometry
L.mapbox.featureLayer(geojson, {
    pointToLayer: function(feature, latlon) {
        // L.circleMarker() draws a circle with fixed radius in pixels. 
        // To draw a circle overlay with a radius in meters, use L.circle()
        return L.circleMarker(latlon, {radius: feature.properties.radius});
    }
}).addTo(map);
</script>

to create your own custom map and use it in this example.

Use this example by copying its source into your own HTML page and replacing the Map ID with one of your own from your projects. Having trouble with JavaScript? Try out Codecademy or contact our support team.

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