74 lines
2.3 KiB
HTML
74 lines
2.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Layer with aggregation | CARTO</title>
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<meta name="viewport" content="initial-scale=1.0">
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<meta charset="utf-8">
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<link href="https://fonts.googleapis.com/css?family=Montserrat:400,600,700|Open+Sans:300,400,600" rel="stylesheet">
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<!-- Include Leaflet -->
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<script src="https://unpkg.com/leaflet/dist/leaflet.js"></script>
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<link href="https://unpkg.com/leaflet/dist/leaflet.css" rel="stylesheet">
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<!-- Include CARTO.js -->
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<script src="../../../dist/public/carto.js"></script>
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<link href="../style.css" rel="stylesheet">
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</head>
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<body>
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<div id="map">
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</div>
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<!-- Description -->
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<aside class="toolbox">
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<div class="box">
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<header>
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<h1>Server tile aggregation</h1>
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<button class="github-logo js-source-link"></button>
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</header>
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<section>
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<p class="description open-sans">This map has smart backend aggregation applied. See source code for details.</p>
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</section>
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<footer class="js-footer"></footer>
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</div>
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</aside>
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<script>
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const map = L.map('map').setView([30, 0], 3);
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map.scrollWheelZoom.disable();
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L.tileLayer('https://{s}.basemaps.cartocdn.com/rastertiles/voyager_nolabels/{z}/{x}/{y}.png', {
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maxZoom: 18
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}).addTo(map);
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const client = new carto.Client({
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apiKey: 'default_public',
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username: 'cartojs-test'
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});
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const source = new carto.source.Dataset('ne_10m_populated_places_simple');
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const style = new carto.style.CartoCSS(`
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#layer {
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marker-width: 7;
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marker-fill: ramp([population], (#ecda9a, #f7945d, #ee4d5a), jenks());
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marker-line-color: #FFFFFF;
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}
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`);
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// Aggregation option
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const aggregation = new carto.layer.Aggregation({
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threshold: 1,
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resolution: 4,
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placement: carto.layer.Aggregation.placement.SAMPLE,
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columns: {
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population: {
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aggregateFunction: carto.layer.Aggregation.operation.SUM,
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aggregatedColumn: 'pop_max'
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}
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}
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});
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const layer = new carto.layer.Layer(source, style, { aggregation });
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client.addLayer(layer);
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client.getLeafletLayer().addTo(map);
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</script>
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</body>
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</html>
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