MapsGL - Customizing alert polygon styles

This example customizes the alert colors of the alerts weather layer by adjusting the color of the alert polygons based on the severity/type of each alert. This type of implementation can be useful when you want to highlight warnings vs watches vs advisories and statements.

custom-alert-styles.html


<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>MapsGL SDK - Custom alert styles</title>
    <meta name="description" content="Use custom alert layer styles to show different alert levels." />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
 
    <link href="https://api.mapbox.com/mapbox-gl-js/v3.12.0/mapbox-gl.css" rel="stylesheet" />
    <script defer src="https://api.mapbox.com/mapbox-gl-js/v3.12.0/mapbox-gl.js"></script>
 
    <link href="https://cdn.aerisapi.com/sdk/js/mapsgl/1.10.1/aerisweather.mapsgl.css" rel="stylesheet" />
    <script defer src="https://cdn.aerisapi.com/sdk/js/mapsgl/1.10.1/aerisweather.mapsgl.js"></script>
 
 
    <style>
    body, html {
        margin: 0;
        padding: 0;
    }
    #map {
        height: 100vh;
        width: 100%;
    }
    </style>
 
</head>
<body>
    <div id="map"></div>
 
    <script>
    window.addEventListener('load', () => {
 
        mapboxgl.accessToken = 'MAPBOX_TOKEN';
        const map = new mapboxgl.Map({
            container: document.getElementById('map'),
            style: 'mapbox://styles/mapbox/light-v9',
            center: [-96.33207, 40.60621],
            zoom: 3
        });
 
        const account = new aerisweather.mapsgl.Account('CLIENT_ID', 'CLIENT_SECRET');
        const controller = new aerisweather.mapsgl.MapboxMapController(map, { account });
 
        const alertColor = [
            'case',
            ['regex', 'warning|extreme', 'i', ['get', 'ADVISORY']], '#df1616',
            ['regex', 'watch|severe', 'i', ['get', 'ADVISORY']], '#ff9600',
            ['regex', 'advisory|moderate', 'i', ['get', 'ADVISORY']], '#009ac8',
            ['regex', 'statement|alert|minor', 'i', ['get', 'ADVISORY']], '#808080',
            ['coalesce', ['get', 'COLOR'], '#000']
        ];
 
        controller.on('load', () => {
            controller.addWeatherLayer('alerts', {
                paint: {
                    fill: {
                        color: alertColor,
                        opacity: 0.5
                    },
                    stroke: {
                        color: alertColor,
                        opacity: 1
                    }
                }
            });
        });
 
    });
    </script>
 
</body>
</html>