Add a line to a map using a GeoJSON source
Add a GeoJSON line to a map using addSource, then style it using addLayer’s paint properties.
<!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/v3.9.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.9.0/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>
This code snippet will not work as expected until you replace
YOUR_MAPBOX_ACCESS_TOKEN with an access token from your Mapbox account.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;
This code snippet will not work as expected until you replace
YOUR_MAPBOX_ACCESS_TOKEN with an access token from your Mapbox account.Was this example helpful?