Add Live Realtime Data

Use realtime data streams to move a symbol on your map.

const API_KEY = 'toursprung';

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        zoom: 2,
        attributionControl: { compact: false }
    });

    map.addControl(new maptoolkit.NavigationControl(), 'top-right');

    map.on('load', () => {
        map.addSource('drone', {
            type: 'geojson',
            data: {
                type: 'Feature',
                geometry: { type: 'Point', coordinates: [0, 0] }
            }
        });

        map.addLayer({
            id: 'drone',
            type: 'circle',
            source: 'drone',
            paint: {
                'circle-radius': 10,
                'circle-color': '#ee4b2b',
                'circle-stroke-width': 2,
                'circle-stroke-color': '#ffffff'
            }
        });

        window.setInterval(() => {
            fetch('https://www.random.org/decimal-fractions/?num=2&dec=10&col=1&format=plain&rnd=new')
                .then(r => r.text())
                .then(text => {
                    const coordinates = text.trim().split('\n').map(l => (Number(l) * 180) - 90);
                    const json = {
                        type: 'Feature',
                        geometry: { type: 'Point', coordinates }
                    };
                    map.getSource('drone').setData(json);
                    map.flyTo({ center: coordinates, speed: 0.5 });
                });
        }, 2000);
    });

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Add Live Realtime Data – Maptoolkit Maps JS</title>
    <meta property="og:description" content="Use realtime data streams to move a symbol on your map." />
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.css" />
    <style>
        html, body { width: 100%; height: 100%; margin: 0; padding: 0; }
        #map { width: 100%; height: 100%; }
    </style>
</head>
<body>
<div id="map"></div>
<script>
    const API_KEY = 'toursprung';

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        zoom: 2,
        attributionControl: { compact: false }
    });

    map.addControl(new maptoolkit.NavigationControl(), 'top-right');

    map.on('load', () => {
        map.addSource('drone', {
            type: 'geojson',
            data: {
                type: 'Feature',
                geometry: { type: 'Point', coordinates: [0, 0] }
            }
        });

        map.addLayer({
            id: 'drone',
            type: 'circle',
            source: 'drone',
            paint: {
                'circle-radius': 10,
                'circle-color': '#ee4b2b',
                'circle-stroke-width': 2,
                'circle-stroke-color': '#ffffff'
            }
        });

        window.setInterval(() => {
            fetch('https://www.random.org/decimal-fractions/?num=2&dec=10&col=1&format=plain&rnd=new')
                .then(r => r.text())
                .then(text => {
                    const coordinates = text.trim().split('\n').map(l => (Number(l) * 180) - 90);
                    const json = {
                        type: 'Feature',
                        geometry: { type: 'Point', coordinates }
                    };
                    map.getSource('drone').setData(json);
                    map.flyTo({ center: coordinates, speed: 0.5 });
                });
        }, 2000);
    });
</script>
</body>
</html>

Add Contour Lines Add Multiple Geometries from One GeoJSON Source