データドリブンプロパティで円を設定 | Mapbox GL JS | ドキュメント

circle-color（円の色）データ式を使用したビジュアライゼーションを作成。

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>データドリブンプロパティで円を設定</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.js"></script>
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>
<script>
	// TO MAKE THE MAP APPEAR YOU MUST
	// ADD YOUR ACCESS TOKEN FROM
	// https://account.mapbox.com
	mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';
const map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/light-v10',
zoom: 12,
center: [-122.4473, 37.7535]
});
 
map.on('load', () => {
// Add the vector tileset as a source.
map.addSource('ethnicity', {
type: 'vector',
url: 'mapbox://examples.8fgz4egr'
});
map.addLayer({
'id': 'population',
'type': 'circle',
'source': 'ethnicity',
'source-layer': 'sf2010',
'paint': {
// Make circles larger as the user zooms from z12 to z22.
'circle-radius': {
'base': 1.75,
'stops': [
[12, 2],
[22, 180]
]
},
// Color circles by ethnicity, using a `match` expression.
'circle-color': [
'match',
['get', 'ethnicity'],
'White',
'#fbb03b',
'Black',
'#223b53',
'Hispanic',
'#e55e5e',
'Asian',
'#3bb2d0',
/* other */ '#ccc'
]
}
});
});
</script>
 
</body>
</html>