Introduction to data services

Data services, also known as hosted data services, are services hosted in a portal that are used to securely store, manage, and access geographic data. They are typically created as an item in your organization's portal.

You can access data from data services by creating client-side data layers in your application. These are also known as operational layers, and can be used to display features, vector tiles, map tiles, and more.

Feature layers

If you have features containing geometry and attributes, you can import the data to create an ArcGIS feature layer in a feature service. To access the data, you can use the URL of the service to query and return features. You can style and display the results in a map or scene. Feature layers can also contain styling information as part of the service response.

How to access a feature service

You can use Esri Leaflet to access a hosted feature layer with the L.esri.FeatureLayer class, which extends L.Layer. To access the class, reference the main Esri Leaflet plugin.

1. Import your data from a CSV, XLS, GeoJSON, or Shapefile file to create a hosted feature layer.
2. Get the URL for the feature layer.
3. Reference the Esri Leaflet plugin.
4. Create the L.esri.featureLayer class and set the URL with the layer ID.
5. Add the layer to the map.

Example

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<script src="https://unpkg.com/esri-leaflet@3.0.12/dist/esri-leaflet.js"
    integrity="sha512-oUArlxr7VpoY7f/dd3ZdUL7FGOvS79nXVVQhxlg6ij4Fhdc4QID43LUFRs7abwHNJ0EYWijiN5LP2ZRR2PY4hQ=="
    crossorigin=""></script>

<script>
  const trailheads = L.esri.featureLayer({
    url: "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads_Styled/FeatureServer/0"
  }).addTo(map);
</script>

Vector tile layers

To access and display a vector tile layer, you use the vectorTileLayer class, which extends L.Layer.

If you want to access and display your data as vector tile data, you can publish a vector tile layer from a feature layer, and then display it in a map using the plugin.

How to access the vector tile service

1. Import your data from a CSV, XLS, GeoJSON, or Shapefile file to create a hosted feature layer.
2. Create a vector tile service by publishing the feature layer as a vector tile layer in your portal.
3. Get the URL.
4. Reference the Esri Leaflet and the vector plugins.
5. Create the L.esri.Vector.vectorTileLayer class and set the service URL.

Example

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<script src="https://unpkg.com/esri-leaflet@3.0.12/dist/esri-leaflet.js"
    integrity="sha512-oUArlxr7VpoY7f/dd3ZdUL7FGOvS79nXVVQhxlg6ij4Fhdc4QID43LUFRs7abwHNJ0EYWijiN5LP2ZRR2PY4hQ=="
    crossorigin=""></script>

<script src="https://unpkg.com/esri-leaflet-vector@4.2.3/dist/esri-leaflet-vector.js"
    integrity="sha512-7rLAors9em7cR3/583gZSvu1mxwPBUjWjdFJ000pc4Wpu+fq84lXF1l4dbG4ShiPQ4pSBUTb4e9xaO6xtMZIlA=="
    crossorigin=""></script>

<script>
L.esri.Vector.vectorTileLayer(
  "https://vectortileservices3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Santa_Monica_Mountains_Parcels_VTL/VectorTileServer"
).addTo(map);
</script>

Map tile layers

To display a map tile layer, you use the L.esri.tiledMapLayer class.

How to access a map tile service

1. Import your data from a CSV, XLS, GeoJSON, or Shapefile file to create a hosted feature layer.
2. Create a tile layer in your portal by navigating to its item page > Publish > Tile layer.
3. Get the URL.
4. Reference the Esri Leaflet plugin.
5. Create the L.esri.tiledMapLayer class and set the service URL in your application.

Example

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<script src="https://unpkg.com/esri-leaflet@3.0.12/dist/esri-leaflet.js"
    integrity="sha512-oUArlxr7VpoY7f/dd3ZdUL7FGOvS79nXVVQhxlg6ij4Fhdc4QID43LUFRs7abwHNJ0EYWijiN5LP2ZRR2PY4hQ=="
    crossorigin=""></script>

<script>
  L.esri
    .tiledMapLayer({
      url: "https://services.arcgisonline.com/ArcGIS/rest/services/USA_Topo_Maps/MapServer"
    })
    .addTo(map);
</script>

Tutorials

Add a feature layer

Add features from feature layers to a map.

Add a vector tile layer

Add a vector tile layer to a map.

Add a map tile layer

Add a map tile layer (raster) to a map.

Display a pop-up

Display feature attributes in a popup.