Add a line to a map using a GeoJSON source | Mapbox GL JS

Add a GeoJSON line to a map using addSource, then style it using addLayer’s paint properties.

JavaScript

React

JavaScript

React


<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Add a line to a map using a GeoJSON source</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',
        // Choose from Mapbox's core styles, or make your own style with Mapbox Studio
        style: 'mapbox://styles/mapbox/streets-v12',
        center: [-122.486052, 37.830348],
        zoom: 14
    });

    map.on('load', () => {
        map.addSource('route', {
            'type': 'geojson',
            'data': {
                'type': 'Feature',
                'properties': {},
                'geometry': {
                    'type': 'LineString',
                    'coordinates': [
                        [-122.483696, 37.833818],
                        [-122.483482, 37.833174],
                        [-122.483396, 37.8327],
                        [-122.483568, 37.832056],
                        [-122.48404, 37.831141],
                        [-122.48404, 37.830497],
                        [-122.483482, 37.82992],
                        [-122.483568, 37.829548],
                        [-122.48507, 37.829446],
                        [-122.4861, 37.828802],
                        [-122.486958, 37.82931],
                        [-122.487001, 37.830802],
                        [-122.487516, 37.831683],
                        [-122.488031, 37.832158],
                        [-122.488889, 37.832971],
                        [-122.489876, 37.832632],
                        [-122.490434, 37.832937],
                        [-122.49125, 37.832429],
                        [-122.491636, 37.832564],
                        [-122.492237, 37.833378],
                        [-122.493782, 37.833683]
                    ]
                }
            }
        });
        map.addLayer({
            'id': 'route',
            'type': 'line',
            'source': 'route',
            'layout': {
                'line-join': 'round',
                'line-cap': 'round'
            },
            'paint': {
                'line-color': '#888',
                'line-width': 8
            }
        });
    });
</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(null);
  const mapRef = useRef(null);

  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: mapContainerRef.current,
      style: 'mapbox://styles/mapbox/streets-v12',
      center: [-122.486052, 37.830348],
      zoom: 14
    });

    mapRef.current.on('load', () => {
      mapRef.current.addSource('route', {
        type: 'geojson',
        data: {
          type: 'Feature',
          properties: {},
          geometry: {
            type: 'LineString',
            coordinates: [
              [-122.483696, 37.833818],
              [-122.483482, 37.833174],
              [-122.483396, 37.8327],
              [-122.483568, 37.832056],
              [-122.48404, 37.831141],
              [-122.48404, 37.830497],
              [-122.483482, 37.82992],
              [-122.483568, 37.829548],
              [-122.48507, 37.829446],
              [-122.4861, 37.828802],
              [-122.486958, 37.82931],
              [-122.487001, 37.830802],
              [-122.487516, 37.831683],
              [-122.488031, 37.832158],
              [-122.488889, 37.832971],
              [-122.489876, 37.832632],
              [-122.490434, 37.832937],
              [-122.49125, 37.832429],
              [-122.491636, 37.832564],
              [-122.492237, 37.833378],
              [-122.493782, 37.833683]
            ]
          }
        }
      });

      mapRef.current.addLayer({
        id: 'route',
        type: 'line',
        source: 'route',
        layout: {
          'line-join': 'round',
          'line-cap': 'round'
        },
        paint: {
          'line-color': '#888',
          'line-width': 8
        }
      });
    });
  });

  return (
    <div
      style={{ height: '100%' }}
      ref={mapContainerRef}
      className="map-container"
    ></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？