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<!DOCTYPE html>
<html lang="en">
<head>
<title>Inspect features under the mouse - Azure Maps Web SDK Samples</title>
<meta charset="utf-8" />
<link rel="shortcut icon" href="/favicon.ico"/>
<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 access any rendered feature on the map, whether it came from a vector tile source, a GeoJSON file, or is part of the base map." />
<meta name="keywords" content="Microsoft maps, map, gis, API, SDK, vector tiles, inspect features, base map, basemap, access roads" />
<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;
function GetMap() {
//Point the Azure Maps domain to the US Azure Gov Cloud domain.
atlas.setDomain('atlas.azure.us');
//Initialize a map instance.
map = new atlas.Map('myMap', {
center: [-122.33, 47.6],
zoom: 12,
view: 'Auto',
//Add authentication details for connecting to Azure Maps.
authOptions: {
//Use Azure Active Directory authentication.
authType: 'anonymous',
clientId: 'c9f2f391-13f1-407b-a4a5-f0a241bacfbf', //Your Azure Active Directory client id for accessing your Azure Maps account.
getToken: function (resolve, reject, map) {
//URL to your authentication service that retrieves an Azure Active Directory Token.
var tokenServiceUrl = 'https://azuremapscodesamples.azurewebsites.us/Common/TokenService.ashx';
fetch(tokenServiceUrl).then(r => r.text()).then(token => resolve(token));
}
//Alternatively, use an Azure Maps key. Get an Azure Maps key at https://azure.com/maps. NOTE: The primary key should be used as the key.
//authType: 'subscriptionKey',
//subscriptionKey: '<Your Azure Maps Key>'
}
});
//Change the cursor of the mouse when it is over the map to be a pointer.
map.getCanvasContainer().style.cursor = 'pointer';
//Wait until the map resources are ready.
map.events.add('ready', function () {
//Add the Style Control to the map.
map.controls.add([
new atlas.control.ZoomControl(),
new atlas.control.PitchControl(),
new atlas.control.CompassControl(),
new atlas.control.StyleControl({ mapStyles: 'all' })
], {
position: 'top-right'
});
//Create a data source to load what should he highlighted.
datasource = new atlas.source.DataSource();
map.sources.add(datasource);
//Create a layer for rendering the highlighted data.
map.layers.add([
new atlas.layer.LineLayer(datasource, null, {
strokeColor: 'red',
strokeWidth: 5,
filter: ['!', ['any', ['==', ['geometry-type'], 'Point'], ['==', ['geometry-type'], 'MultiPoint']]] //Anything but a Point or a MultiPoint feature.
}),
new atlas.layer.BubbleLayer(datasource, null, {
radius: 20,
strokeColor: 'red',
strokeWidth: 5,
color: 'transparent',
filter: ['any', ['==', ['geometry-type'], 'Point'], ['==', ['geometry-type'], 'MultiPoint']] //Only render Point or MultiPoints in this layer.
})
]);
//Add a click event to query the map features.
map.events.add('click', function (e) {
var features = e.shapes;
if (features.length > 0) {
var selected = features[0];
//Optionally, loop over the features and filter out features that aren't a part of the data source or source layer you want to inspect.
//var layersToIgnore = ['Built-up area'];
//for (var i = 0; i < features.length; i++) {
// if (features[i].layer && features[i].layer['source-layer'] && layersToIgnore.indexOf(features[i].layer['source-layer']) === -1) {
// selected = features[i];
// break;
// }
//}
//Overwrite the data in the data source.
datasource.setShapes(selected);
//Display the features JSON data in the side panel.
document.getElementById('sidePanel').innerHTML = JSON.stringify(selected, null, 2);
}
});
map.events.add('mousemove', function (e) {
//Show layer geometry type and layer names when hovering over items on the map.
var msg = [];
if (e.shapes && e.shapes.length > 0) {
msg.push(e.shapes.length, ' shapes hovered.<ul>');
e.shapes.forEach(s => {
if (s instanceof atlas.Shape) {
msg.push('<li>Shape: ', s.getType(), '</li>');
} else {
msg.push('<li>Feature: ', s.geometry.type, ' (', s.source, ' -> ', s.sourceLayer, ')</li>');
}
});
msg.push('</ul>');
}
document.getElementById('hoverPanel').innerHTML = msg.join('');
});
map.events.add('mouseout', function () {
//Clear the hover panel when the mouse leaves the map.
document.getElementById('hoverPanel').innerHTML = '';
});
});
}
</script>
</head>
<body onload="GetMap()">
<div id="myMap" style="position:relative;width:calc(100% - 400px);min-width:290px;height:600px;float:left;"></div>
<div id="hoverPanel" style="position:absolute;top:10px;left:10px;background-color:white;padding:10px;border-radius:10px;"></div>
<div style="position:relative;width:380px;height:580px;float:left;overflow:auto;padding:10px;">
<pre id="sidePanel"></pre>
</div>
<fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
<legend><h1 style="font-size:16px">Inspect features under the mouse</h1></legend>
This sample shows how to access any rendered feature on the map, whether it came from a vector tile source, a GeoJSON file, or is part of the base map. Click the map to get details about the top most rendered feature.
</fieldset>
</body>
</html>