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<html>
<head>
<!-- FONT -->
<link
href="https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;600&display=swap"
rel="stylesheet"
/>
<!-- h3-js is required -->
<script src="https://unpkg.com/h3-js@^3.0.0"></script>
<script src="https://unpkg.com/deck.gl@^8.8.0/dist.min.js"></script>
<script src="https://unpkg.com/@deck.gl/carto@^8.8.0/dist.min.js"></script>
<script src="https://unpkg.com/maplibre-gl@2.1.9/dist/maplibre-gl.js"></script>
<link href="https://unpkg.com/maplibre-gl@2.1.9/dist/maplibre-gl.css" rel="stylesheet" />
</head>
<body style="margin: 0; padding: 0; overflow: hidden; font-family: 'Open Sans', sans-serif">
<div id="map" style="width: 100vw; height: 100vh"></div>
</body>
<script type="text/javascript">
async function initialize() {
deck.carto.setDefaultCredentials({
username: 'public',
apiKey: 'default_public',
apiVersion: deck.carto.API_VERSIONS.V2,
});
// Fetch Data from CARTO
const url = 'https://public.carto.com/api/v2/sql?q=SELECT mean, count, hexids FROM sf_h3_clusters&format=json';
const jsonData = await fetch(url).then(response => response.json());
// Create Deck.GL map
const deckgl = new deck.DeckGL({
container: 'map',
map: maplibregl,
mapStyle: deck.carto.BASEMAP.DARK_MATTER,
initialViewState: {
longitude: -122.43,
latitude: 37.76,
zoom: 10.5
},
controller: true,
layers: [
new deck.H3ClusterLayer({
id: 'h3-cluster-layer',
data: jsonData.rows,
pickable: true,
stroked: true,
filled: true,
extruded: false,
getHexagons: d => d.hexids,
getFillColor: d => [255, (1 - d.mean / 500) * 255, 0],
getLineColor: [255, 255, 255, 120],
lineWidthMinPixels: 2
})
],
getTooltip: ({object}) => object && `density: ${object.mean}`
});
}
initialize();
</script>
</html>
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