Add an icon to the map | Mapbox GL JS

This example uses an image from an external URL to visualize a point feature on the map.

Upon loading, the map uses loadImage to load the image from an external domain, addImage to add the image to the style as an icon, addSource to add a data source containing one point feature, and addLayer to create a new symbol layer that uses the icon to represent the point data and instructs the client to draw the image for each point in the data source.

JavaScript

React

JavaScript

React


<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Add an icon to the map</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v3.8.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.8.0/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', // container ID
        // Choose from Mapbox's core styles, or make your own style with Mapbox Studio
        style: 'mapbox://styles/mapbox/dark-v11', // style URL
        zoom: 10, // starting zoom
        center: [-77.432, 25.0306] // starting position
    });

    map.on('load', () => {
        // Load an image from an external URL.
        map.loadImage(
            'https://docs.mapbox.com/mapbox-gl-js/assets/cat.png',
            (error, image) => {
                if (error) throw error;

                // Add the image to the map style.
                map.addImage('cat', image);

                // Add a data source containing one point feature.
                map.addSource('point', {
                    'type': 'geojson',
                    'data': {
                        'type': 'FeatureCollection',
                        'features': [
                            {
                                'type': 'Feature',
                                'geometry': {
                                    'type': 'Point',
                                    'coordinates': [-77.4144, 25.0759]
                                }
                            }
                        ]
                    }
                });

                // Add a layer to use the image to represent the data.
                map.addLayer({
                    'id': 'points',
                    'type': 'symbol',
                    'source': 'point', // reference the data source
                    'layout': {
                        'icon-image': 'cat', // reference the image
                        'icon-size': 0.25
                    }
                });
            }
        );
    });
</script>

</body>
</html>

このコードスニペットは、YOUR_MAPBOX_ACCESS_TOKENをあなたのMapboxアカウントのアクセストークンに置き換えるまで、期待通りに動作しません。

JavaScript

React


import React, { useEffect, useRef } from 'react';
import mapboxgl from 'mapbox-gl';

import 'mapbox-gl/dist/mapbox-gl.css';

const MapboxExample = () => {
  const mapContainerRef = useRef();
  const mapRef = useRef();

  useEffect(() => {
    // TO MAKE THE MAP APPEAR YOU MUST
    // ADD YOUR ACCESS TOKEN FROM
    // https://account.mapbox.com
    mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';

    mapRef.current = new mapboxgl.Map({
      container: 'map',
      style: 'mapbox://styles/mapbox/dark-v11',
      zoom: 10,
      center: [-77.432, 25.0306]
    });

    mapRef.current.on('load', () => {
      mapRef.current.loadImage(
        'https://docs.mapbox.com/mapbox-gl-js/assets/cat.png',
        (error, image) => {
          if (error) throw error;

          mapRef.current.addImage('cat', image);

          mapRef.current.addSource('point', {
            type: 'geojson',
            data: {
              type: 'FeatureCollection',
              features: [
                {
                  type: 'Feature',
                  geometry: {
                    type: 'Point',
                    coordinates: [-77.4144, 25.0759]
                  }
                }
              ]
            }
          });

          mapRef.current.addLayer({
            id: 'points',
            type: 'symbol',
            source: 'point',
            layout: {
              'icon-image': 'cat',
              'icon-size': 0.25
            }
          });
        }
      );
    });
  }, []);

  return <div id="map" ref={mapContainerRef} style={{ height: '100%' }}></div>;
};

export default MapboxExample;

このコードスニペットは、YOUR_MAPBOX_ACCESS_TOKENをあなたのMapboxアカウントのアクセストークンに置き換えるまで、期待通りに動作しません。

追加の開発者リソース

このexampleは役に立ちましたか？