Identifying Features
Identifying features on a Dynamic Map Layer on click by querying the service. Click a feature to identify it. More information about Map Services can be found in the L.esri.DynamicMapLayer documentation.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Identifying Features</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
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<link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"
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<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"
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crossorigin=""></script>
<style>
body { margin:0; padding:0; }
#map { position: absolute; top:0; bottom:0; right:0; left:0; }
</style>
</head>
<body>
<style>
#selectedFeatures {
position: absolute;
top: 10px;
right: 10px;
z-index: 1000;
background: white;
padding: 1em;
}
.leaflet-bar.map-text a {
color: #79BD8F;
display: inline;
}
</style>
<div id="map"></div>
<div id="selectedFeatures" class="leaflet-bar map-text">
Click on the map for Soil <a href="https://services.arcgisonline.com/arcgis/rest/services/Specialty/Soil_Survey_Map/MapServer">Order/ Sub-Order</a>
</div>
<script>
var map = L.map('map', {
minZoom: 5
}).setView([38.5, -96.8], 6);
L.esri.basemapLayer('Gray').addTo(map);
var soil = L.esri.dynamicMapLayer({
url: 'https://services.arcgisonline.com/arcgis/rest/services/Specialty/Soil_Survey_Map/MapServer',
opacity: 0.7
}).addTo(map);
var identifiedFeature;
var pane = document.getElementById('selectedFeatures');
map.on('click', function (e) {
pane.innerHTML = 'Loading';
if (identifiedFeature) {
map.removeLayer(identifiedFeature);
}
soil.identify().on(map).at(e.latlng).run(function (error, featureCollection) {
if (error) {
return;
}
// make sure at least one feature was identified.
if (featureCollection.features.length > 0) {
identifiedFeature = L.geoJSON(featureCollection.features[0]).addTo(map);
var soilDescription =
featureCollection.features[0].properties['Dominant Order'] +
' - ' +
featureCollection.features[0].properties['Dominant Sub-Order'];
pane.innerHTML = soilDescription;
} else {
pane.innerHTML = 'No features identified.';
}
});
});
</script>
</body>
</html>