Render GeoJSON as Heat Map
Note
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This code sample loads in earthquake data for the last 30 days from the United States Geological Survey (USGS) and displays them as a heatmap layer. The USGS data makes a number of earthquake data feeds available in GeoJSON format on their website here.
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<script type='text/javascript'>
var usgsEarthquakeUrl = ' http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_month.geojson';
function GetMap() {
var map = new Microsoft.Maps.Map('#myMap', {
credentials: ‘Your Bing Maps Key’,
center: new Microsoft.Maps.Location(40, -120),
zoom: 2
});
//Load the GeoJSON and HeatMap modules.
Microsoft.Maps.loadModule(['Microsoft.Maps.GeoJson', 'Microsoft.Maps.HeatMap'], function () {
Microsoft.Maps.GeoJson.readFromUrl(usgsEarthquakeUrl, function (shapes) {
var heatmap = new Microsoft.Maps.HeatMapLayer(shapes, { radius: 5 });
map.layers.insert(heatmap);
});
});
}
</script>
<script type='text/javascript' src='http://www.bing.com/api/maps/mapcontrol?callback=GetMap' async defer></script>
</head>
<body>
<div id="myMap" style="position:relative;width:600px;height:400px;"></div>
</body>
</html>
Here is what this heat map looks like over the Pacific Ocean which is surrounded by the Ring of Fire, an area where a large number of earthquakes and volcanic eruptions occur.
