Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
1 contributor

Users who have contributed to this file

109 lines (92 sloc) 5.1 KB
<!DOCTYPE html>
<html>
<head>
<title>Calculate a Simple Isochrone - Azure Maps Web SDK Samples</title>
<meta charset="utf-8" />
<meta http-equiv="x-ua-compatible" content="IE=Edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="This sample shows how to calculate an isochrone (drive time polygon) using the Azure Maps Route Reachable Range service and display it on the map. " />
<meta name="keywords" content="map, gis, API, SDK, REST, service, directions, route, routing, isochrone, isodistance, drive time polygon, reachable range" />
<meta name="author" content="Microsoft Azure Maps" />
<!-- Add references to the Azure Maps Map control JavaScript and CSS files. -->
<link rel="stylesheet" href="https://atlas.microsoft.com/sdk/javascript/mapcontrol/2/atlas.min.css" type="text/css" />
<script src="https://atlas.microsoft.com/sdk/javascript/mapcontrol/2/atlas.min.js"></script>
<script type='text/javascript'>
var map, datasource;
var reachableRangeUrlTemplate = 'https://atlas.microsoft.com/route/range/json?subscription-key={subscription-key}&api-version=1.0&query={lat},{lon}&timeBudgetInSec={time}&view=Auto';
function GetMap() {
//Initialize a map instance.
map = new atlas.Map('myMap', {
center: [-0.113042, 51.511859],
zoom: 12,
view: 'Auto',
//Add your Azure Maps subscription key to the map SDK. Get an Azure Maps key at https://azure.com/maps
authOptions: {
authType: 'subscriptionKey',
subscriptionKey: '<Your Azure Maps Key>'
}
});
//Wait until the map resources are ready.
map.events.add('ready', function () {
//Create a data source and add it to the map.
datasource = new atlas.source.DataSource();
map.sources.add(datasource);
//Add layers to the map to render the data.
map.layers.add([
//Createa polygon layer to render the isochrone.
new atlas.layer.PolygonLayer(datasource, null, {
fillColor: 'rgba(255,0,0,0.4)'
}),
//Create a symbol layer to render the center point.
new atlas.layer.SymbolLayer(datasource, null, {
filter: ['any', ['==', ['geometry-type'], 'Point'], ['==', ['geometry-type'], 'MultiPoint']] //Only render Point or MultiPoints in this layer.
})
]);
//Calculate a 15 minute isochrone from the center of the map. Note that we have to convert 15 minutes to seconds.
getIsochrone(map.getCamera().center, 15 * 60);
});
}
function getIsochrone(center, timeInSeconds) {
//Create the URL request to the reachable range service.
var request = reachableRangeUrlTemplate
.replace('{subscription-key}', atlas.getSubscriptionKey())
.replace('{lat}', center[1])
.replace('{lon}', center[0])
.replace('{time}', timeInSeconds);
//Proces the request.
fetch(request)
.then(function (response) {
return response.json();
}).then(function (response) {
if (response.reachableRange) {
//Convert the response into GeoJSON and add it to the map.
var positions = response.reachableRange.boundary.map(function (latLng) {
return [latLng.longitude, latLng.latitude];
});
var isochrone = new atlas.data.Polygon([positions]);
var centerPoint = new atlas.data.Point([
response.reachableRange.center.longitude,
response.reachableRange.center.latitude
]);
//Add the data to the data source.
datasource.add([
isochrone,
centerPoint
]);
} else {
alert('Unable to calculate an isochrone.')
}
});
}
</script>
</head>
<body onload="GetMap()">
<div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;"></div>
<fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
<legend>Calculate a Simple Isochrone</legend>
This sample shows how to calculate a simple isochrone (drive time polygon) using the Azure Maps
<a href="https://docs.microsoft.com/en-us/azure/azure-maps/glossary#reachable-range" target="_blank">Route Reachable Range service</a> and display it on the map.
This sample calculates an isochrone for driving 15 minutes from a point near the center of London, UK.
</fieldset>
</body>
</html>
You can’t perform that action at this time.