Draw GeoJSON points
Draw points from a GeoJSON collection to a map.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Draw GeoJSON points</title>
<meta property="og:description" content="Draw points from a GeoJSON collection to a map." />
<meta charset='utf-8'>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel='stylesheet' href='https://unpkg.com/maplibre-gl@4.2.0/dist/maplibre-gl.css' />
<script src='https://unpkg.com/maplibre-gl@4.2.0/dist/maplibre-gl.js'></script>
<style>
body { margin: 0; padding: 0; }
html, body, #map { height: 100%; }
</style>
</head>
<body>
<div id="map"></div>
<script>
const map = new maplibregl.Map({
container: 'map',
style:
'https://api.maptiler.com/maps/positron/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL',
center: [0, 0],
zoom: 1
});
map.on('load', async () => {
// Add an image to use as a custom marker
const image = await map.loadImage('https://maplibre.org/maplibre-gl-js/docs/assets/osgeo-logo.png');
map.addImage('custom-marker', image.data);
// Add a GeoJSON source with 15 points
map.addSource('conferences', {
'type': 'geojson',
'data': {
'type': 'FeatureCollection',
'features': [
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [100.4933, 13.7551]
},
'properties': {'year': '2004'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [6.6523, 46.5535]
},
'properties': {'year': '2006'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-123.3596, 48.4268]
},
'properties': {'year': '2007'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [18.4264, -33.9224]
},
'properties': {'year': '2008'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [151.195, -33.8552]
},
'properties': {'year': '2009'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [2.1404, 41.3925]
},
'properties': {'year': '2010'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-104.8548, 39.7644]
},
'properties': {'year': '2011'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-1.1665, 52.9539]
},
'properties': {'year': '2013'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-122.6544, 45.5428]
},
'properties': {'year': '2014'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [126.974, 37.5651]
},
'properties': {'year': '2015'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [7.1112, 50.7255]
},
'properties': {'year': '2016'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-71.0314, 42.3539]
},
'properties': {'year': '2017'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [39.2794, -6.8173]
},
'properties': {'year': '2018'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [26.0961, 44.4379]
},
'properties': {'year': '2019'}
},
{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-114.0879, 51.0279]
},
'properties': {'year': '2020'}
}
]
}
});
// Add a symbol layer
map.addLayer({
'id': 'conferences',
'type': 'symbol',
'source': 'conferences',
'layout': {
'icon-image': 'custom-marker',
// get the year from the source's "year" property
'text-field': ['get', 'year'],
'text-font': [
'Open Sans Semibold',
'Arial Unicode MS Bold'
],
'text-offset': [0, 1.25],
'text-anchor': 'top'
}
});
});
</script>
</body>
</html>