Turf Concave Hull

Generate a concave hull from a set of points

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Turf Concave Hull</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.mapbox.com/mapbox.js/v3.2.1/mapbox.js'></script>
<link href='https://api.mapbox.com/mapbox.js/v3.2.1/mapbox.css' rel='stylesheet' />
<style>
  body { margin:0; padding:0; }
  #map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>

<script src='https://api.mapbox.com/mapbox.js/plugins/turf/v2.0.2/turf.min.js'></script>
<div id='map'></div>
<script>
L.mapbox.accessToken = '<your access token here>';
var map = L.mapbox.map('map')
  .setView([37.77396, -122.4366], 13)
  .addLayer(L.mapbox.styleLayer('mapbox://styles/mapbox/streets-v11'));

var myFeatureLayer = L.mapbox.featureLayer('/mapbox.js/assets/data/sf_locations.geojson')
    .addTo(map);

myFeatureLayer.on('ready', function() {
    var hull = turf.concave(myFeatureLayer.getGeoJSON(), 3, 'miles');
    L.mapbox.featureLayer(hull).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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