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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"></script>
<script src="https://unpkg.com/deck.gl@^8.7.0/dist.min.js"></script>
<script src="https://unpkg.com/@deck.gl/carto@^8.7.0/dist.min.js"></script>
<script src="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-gl.js"></script>
<link href="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-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 hex, count FROM sf_h3_cells&format=json';
const jsonData = await fetch(url).then(response => response.json());
// Create Deck.GL map
const deckgl = new deck.DeckGL({
container: 'map',
mapStyle: deck.carto.BASEMAP.DARK_MATTER,
initialViewState: {
longitude: -122.42,
latitude: 37.79,
zoom: 10.5,
bearing: 6.5,
pitch: 47
},
controller: true,
layers: [
new deck.H3HexagonLayer({
id: 'h3-hexagon-layer',
data: jsonData.rows,
pickable: true,
autoHighlight: true,
wireframe: false,
filled: true,
extruded: true,
elevationScale: 20,
getHexagon: d => d.hex,
getFillColor: d => [255, (1 - d.count / 500) * 255, 0],
getElevation: d => d.count
})
],
getTooltip: ({ object }) => object && `hex: ${object.hex}\n count: ${object.count}`
});
}
initialize();
</script>
</html>
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