Convert ArcGIS features to GeoJSON

You can convert ArcGIS features to GeoJSON using the arcgisToGeoJSON method.

Use dark colors for code blocksCopy
                                                                  
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
<html>
  <head>
    <meta charset="utf-8" />
    <title>Convert ArcGIS features to GeoJSON</title>
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.8.0/dist/leaflet.css" crossorigin="" />
    <script src="https://unpkg.com/leaflet@1.8.0/dist/leaflet.js" crossorigin=""></script>
    <!-- Load Esri Leaflet from CDN -->
    <script src="https://unpkg.com/esri-leaflet@^3.0.8/dist/esri-leaflet.js"></script>
    <!-- Load Esri Leaflet Vector from CDN -->
    <script src="https://unpkg.com/esri-leaflet-vector@4.0.0/dist/esri-leaflet-vector.js" crossorigin=""></script>
    <style>
      html,
      body,
      #map {
        padding: 0;
        margin: 0;
        height: 100%;
        width: 100%;
        font-family: Arial, Helvetica, sans-serif;
        font-size: 14px;
        color: #323232;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      const apiKey = "YOUR_API_KEY";

      const map = L.map("map");
      L.esri.Vector.vectorBasemapLayer("OSM:StreetsRelief", {
        apikey: apiKey
      }).addTo(map);

      L.esri.get("https://www.arcgis.com/sharing/content/items/62914b2820c24d4e95710ebae77937cb/data", {}, function (error, response) {
        if (error) {
          return;
        }

        const arcGISFeatures = response.operationalLayers[0].featureCollection.layers[0].featureSet.features;
        const idField = response.operationalLayers[0].featureCollection.layers[0].layerDefinition.objectIdField;

        // empty geojson feature collection
        const geoJSONFeatureCollection = {
          type: "FeatureCollection",
          features: []
        };

        for (let i = arcGISFeatures.length - 1; i >= 0; i--) {
          // convert ArcGIS Feature to GeoJSON Feature
          const geoJSONFeature = L.esri.Util.arcgisToGeoJSON(arcGISFeatures[i], idField);

          // unproject the web mercator coordinates to lat/lng
          const latlng = L.Projection.Mercator.unproject(L.point(geoJSONFeature.geometry.coordinates));
          geoJSONFeature.geometry.coordinates = [latlng.lng, latlng.lat];

          geoJSONFeatureCollection.features.push(geoJSONFeature);
        }

        const geojsonLayer = L.geoJSON(geoJSONFeatureCollection).addTo(map);
        map.fitBounds(geojsonLayer.getBounds());
      });
    </script>
  </body>
</html>

Your browser is no longer supported. Please upgrade your browser for the best experience. See our browser deprecation post for more details.