Add geometry

Estimated reading time: 2 minutes

Check out this code sample that uses the MapLibre GL JS library to add a geometry from GeoJSON onto your map.

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<!doctype html>
<html>
  <head>
    <meta charset="UTF-8" />
    <link href="https://unpkg.com/[email protected]/dist/maplibre-gl.css" rel="stylesheet" />
    <script src="https://unpkg.com/[email protected]/dist/maplibre-gl.js"></script>
    <style>
      html,
      body {
        margin: 0;
        padding: 0;
        height: 100%;
      }
      #map {
        min-height: 500px;
        height: 100%;
        width: 100%;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      // Don't forget to replace <YOUR_ACCESS_TOKEN> by your own access token
      const accessToken = "<YOUR_ACCESS_TOKEN>";
      const map = new maplibregl.Map({
        container: "map",
        style: `https://api.jawg.io/styles/jawg-dark.json?access-token=${accessToken}`,
        zoom: 10,
        center: [2.3488, 48.8534],
        hash: true,
      }).addControl(new maplibregl.NavigationControl(), "top-right");
      // This plugin is used for right to left languages
      maplibregl.setRTLTextPlugin("https://unpkg.com/@mapbox/[email protected]/mapbox-gl-rtl-text.min.js");

      const geoJsonFeature = {
        type: "Feature",
        properties: {},
        geometry: {
          type: "LineString",
          coordinates: [
            [2.319887, 48.90046],
            [2.329981, 48.901163],
            [2.38515, 48.902008],
            [2.394906, 48.898444],
            [2.397627, 48.894578],
            [2.398846, 48.887109],
            [2.408308, 48.880409],
            [2.41327, 48.872892],
            [2.413838, 48.864376],
            [2.416341, 48.849234],
            [2.412246, 48.834539],
            [2.422139, 48.835798],
            [2.41939, 48.842577],
            [2.42813, 48.841528],
            [2.447699, 48.844818],
            [2.463438, 48.842089],
            [2.467426, 48.838891],
            [2.467582, 48.833133],
            [2.462696, 48.81906],
            [2.458705, 48.81714],
            [2.438448, 48.818232],
            [2.421462, 48.824054],
            [2.406032, 48.827615],
            [2.390939, 48.826079],
            [2.379296, 48.821214],
            [2.363947, 48.816314],
            [2.345958, 48.816036],
            [2.331898, 48.817011],
            [2.332461, 48.818247],
            [2.292196, 48.827142],
            [2.279052, 48.83249],
            [2.272793, 48.82792],
            [2.263174, 48.83398],
            [2.255144, 48.83481],
            [2.251709, 48.838822],
            [2.250612, 48.845555],
            [2.239978, 48.849702],
            [2.224219, 48.853517],
            [2.228225, 48.865183],
            [2.231736, 48.869069],
            [2.245678, 48.876435],
            [2.25541, 48.874264],
            [2.258467, 48.880387],
            [2.277487, 48.877968],
            [2.282327, 48.883923],
            [2.291507, 48.889472],
            [2.319887, 48.90046],
          ],
        },
      };

      map.on("load", () => {
        map.addLayer({
          id: "route",
          type: "line",
          source: {
            type: "geojson",
            data: geoJsonFeature,
          },
          layout: {
            "line-join": "round",
            "line-cap": "round",
          },
          paint: {
            "line-color": "steelblue",
            "line-width": 4,
          },
        });
      });
    </script>
  </body>
</html>