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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Create and style clusters</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://api.mapbox.com/mapbox-gl-js/v1.6.1/mapbox-gl.js"></script>
<link href="https://api.mapbox.com/mapbox-gl-js/v1.6.1/mapbox-gl.css" rel="stylesheet" />
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
<script src="https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v4.4.2/mapbox-gl-geocoder.min.js"></script>
<link
rel="stylesheet"
href="https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v4.4.2/mapbox-gl-geocoder.css"
type="text/css"
/>
</head>
<body>
<div id="map"></div>
<div class="map-overlay">
<fieldset>
<input
id="feature-filter"
type="text"
placeholder="Filter results by name"
/>
</fieldset>
<div id="feature-listing" class="listing"></div>
</div>
<script>
mapboxgl.accessToken = 'pk.eyJ1IjoiYWFrb28iLCJhIjoiY2s1c3F4OWs4MGR6YjNscGNqeTR1ODIxMyJ9.ku1Oq0q18wtTWnNBe6Hg0w';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/dark-v10',
center: [9.537499, 33.886917],
zoom: 5
});
map.on('load', function() {
// Add a new source from our GeoJSON data and set the
// 'cluster' option to true. GL-JS will add the point_count property to your source data.
map.addSource('earthquakes', {
type: 'geojson',
// Point to GeoJSON data. This example visualizes all M1.0+ earthquakes
// from 12/22/15 to 1/21/16 as logged by USGS' Earthquake hazards program.
data:
'https://aakoo.github.io/CNAM_DSS/convertcsv.geojson',
cluster: true,
clusterMaxZoom: 14, // Max zoom to cluster points on
clusterRadius: 50 // Radius of each cluster when clustering points (defaults to 50)
});
map.addLayer({
id: 'clusters',
type: 'circle',
source: 'earthquakes',
filter: ['has', 'point_count'],
paint: {
// Use step expressions (https://docs.mapbox.com/mapbox-gl-js/style-spec/#expressions-step)
// with three steps to implement three types of circles:
// * Blue, 20px circles when point count is less than 100
// * Yellow, 30px circles when point count is between 100 and 750
// * Pink, 40px circles when point count is greater than or equal to 750
'circle-color': [
'step',
['get', 'point_count'],
'#51bbd6',
100,
'#f1f075',
750,
'#f28cb1'
],
'circle-radius': [
'step',
['get', 'point_count'],
20,
100,
30,
750,
40
]
}
});
map.addLayer({
id: 'cluster-count',
type: 'symbol',
source: 'earthquakes',
filter: ['has', 'point_count'],
layout: {
'text-field': '{point_count_abbreviated}',
'text-font': ['DIN Offc Pro Medium', 'Arial Unicode MS Bold'],
'text-size': 12
}
});
map.addLayer({
id: 'unclustered-point',
type: 'circle',
source: 'earthquakes',
filter: ['!', ['has', 'point_count']],
paint: {
'circle-color': '#11b4da',
'circle-radius': 4,
'circle-stroke-width': 1,
'circle-stroke-color': '#fff'
}
});
// inspect a cluster on click
map.on('click', 'clusters', function(e) {
var features = map.queryRenderedFeatures(e.point, {
layers: ['clusters']
});
var clusterId = features[0].properties.cluster_id;
map.getSource('earthquakes').getClusterExpansionZoom(
clusterId,
function(err, zoom) {
if (err) return;
map.easeTo({
center: features[0].geometry.coordinates,
zoom: zoom
});
}
);
});
map.addControl(
new mapboxgl.GeolocateControl({
positionOptions: {
enableHighAccuracy: true
},
trackUserLocation: true
})
);
map.addControl(
new MapboxGeocoder({
accessToken: mapboxgl.accessToken,
// limit results to Australia
countries: 'tn',
}));
map.on('mouseenter', 'clusters', function() {
map.getCanvas().style.cursor = 'pointer';
});
map.on('mouseleave', 'clusters', function() {
map.getCanvas().style.cursor = '';
});
});
</script>
</body>
</html>