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How to access data services | CesiumJS

CesiumJS applications can access data services hosted in a portal. You can access data services to display features, map tiles, or 3D objects such as buildings. Supported data types include features, I3S data, and map tiles.

All data stored in ArcGIS is managed and accessed as a data service. You can create a data service by uploading your own data to ArcGIS. Data services are managed through an item and can be accessed in your application by referencing their service URL.

To learn more about data services, go to Data services.

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.

To learn how to import your data as a feature service, go to Import data as a feature layer.

To display features from a feature service in CesiumJS, you need to use ArcGIS REST JS to query the features and return results as GeoJSON. Once you have the GeoJSON response, use a Cesium GeoJsonDataSource to add and style the feature data.

1. Create a new feature service in your portal or select an existing one. You can create a feature service by uploading a CSV, XLS, GeoJSON, or shapefile.

2. In your CesiumJS application, add references to the ArcGIS REST JS request and feature-service packages.

3. Create an authentication object with ArcGIS REST JS using your ArcGIS access token. If the feature service is private, ensure that your access token is properly scoped to access the features.

4. Use arcgisRest.queryFeatures to request features from the feature service. Set the url parameter to the URL of the feature service, and include f:"geojson" to return results as GeoJSON.

5. Create a new Cesium.GeoJsonDataSource from the ArcGIS REST JS response.

6. Add the GeoJSON data source to your scene using dataSources.add.

This example queries the Santa Monica Trailheads (points) feature layer and adds the results to the scene as a GeoJsonDataSource.

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<div id="cesiumContainer"></div>
<script>
   const viewer = new Cesium.Viewer("cesiumContainer", {
        imageryProvider: arcGISImageTileProvider,
   });

   const pointLayerURL = "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads/FeatureServer/0";

   arcgisRest.queryFeatures({
      url: pointLayerURL,
      authentication,
      f:"geojson"
   }).then((response) => {
      const data = Cesium.GeoJsonDataSource.load(response,{
            clampToGround:true
      })
      viewer.dataSources.add(data);
   })
</script>

Go to Add features as GeoJSON.

A scene service contains 3D scene data stored in the Indexed 3D Scene Layer (I3S) format, an OGC standard. Cesium currently supports the following types of I3S layers:

• 3D object layers
• Integrated mesh layers

To display scene data in CesiumJS, add an I3SDataProvider to your app that references the URL of the scene service.

1. Create a scene service in ArcGIS by uploading a scene layer package, or find an existing scene layer from ArcGIS Living Atlas.

2. In your CesiumJS application, create a new I3SDataProvider. Set the url to the URL of the scene service.

3. If your layer has gravity-related heights, set the geoidTiledTerrainProvider parameter of the I3SDataProvider to an Earth Gravitational Model.

4. Add the I3S data provider to your scene using scene.primitives.add.

This example displays a 3D object layer containing textured building models of San Francisco. It uses the Earth Gravitational Model EGM2008 to align buildings with terrain.

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  <div id="cesiumContainer"></div>
  <script type="module">

    /* Use for API key authentication */
    const accessToken = "YOUR_ACCESS_TOKEN";

    // or

    /* Use for user authentication */
    // const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
    //   clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
    //   redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
    //   portal: "YOUR_PORTAL_URL" // Your portal URL
    // })

    // const accessToken = session.token;

    Cesium.ArcGisMapService.defaultAccessToken = accessToken;

    const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN";
    Cesium.Ion.defaultAccessToken = cesiumAccessToken;

    const arcGisImagery = Cesium.ArcGisMapServerImageryProvider.fromBasemapType(Cesium.ArcGisBaseMapType.SATELLITE, {
      enablePickFeatures:false
    });

    const viewer = new Cesium.Viewer("cesiumContainer", {

        baseLayer: Cesium.ImageryLayer.fromProviderAsync(arcGisImagery),

    });

    // Add Esri attribution
    // Learn more in https://esriurl.com/attribution
    const poweredByEsri = new Cesium.Credit("Powered by <a href='https://www.esri.com/en-us/home' target='_blank'>Esri</a>", true)
    viewer.creditDisplay.addStaticCredit(poweredByEsri);

    // The source data used in this transcoding service was compiled from https://earth-info.nga.mil/#tab_wgs84-data and is based on EGM2008 Gravity Model
    const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl("https://tiles.arcgis.com/tiles/GVgbJbqm8hXASVYi/arcgis/rest/services/EGM2008/ImageServer");

      // Attribution text retrieved from https://arcgis.com/home/item.html?id=d798c71512404bbb9c1551b827bf5467
      viewer.creditDisplay.addStaticCredit(new Cesium.Credit("National Geospatial-Intelligence Agency (NGA)", false));

    const i3sLayer = "https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/SanFrancisco_Bldgs/SceneServer";

    const i3sProvider = await Cesium.I3SDataProvider.fromUrl(i3sLayer, {
        geoidTiledTerrainProvider: geoidService,
        token: accessToken,
    })

    // Attribution text retrieved from https://www.arcgis.com/home/item.html?id=f71313a22abb4431974374a009f2e54b
    viewer.creditDisplay.addStaticCredit(new Cesium.Credit("Copyright (c) 2010-2011 PLW Modelworks, LLC", false));

    viewer.scene.primitives.add(i3sProvider);

  </script>

Go to Add 3D objects.

You can add an ArcGIS map tile layer to a CesiumJS application to visualize your data. Map tiles can be accessed through the ArcGISMapServerImageryProvider class.

ArcGISMapServerImageryProvider can also be used to access ArcGIS base layers. To learn how, go to the Display a scene tutorial.

1. In ArcGIS, create a map tile service by publishing one from an existing feature layer, or by importing a tile package.

2. In your CesiumJS application, create a Viewer or CesiumWidget.

3. Create a new ArcGISMapServerImageryProvider and set the url to the URL of the map tile service. Set the token parameter to your ArcGIS access token.

4. Display the map tiles in your scene by adding the provider to the viewer's ImageryLayerCollection.

To learn more about map tile services, go to Map tile services.

This example shows how to add a custom map tile layer hosted in a portal to your CesiumJS application.

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  <div id="cesiumContainer"></div>
  <script>

    /* Use for API key authentication */
    const accessToken = "YOUR_ACCESS_TOKEN";

    // or

    /* Use for user authentication */
    // const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
    //   clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
    //   redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
    //   portal: "YOUR_PORTAL_URL" // Your portal URL
    // })

    // const accessToken = session.token;

    Cesium.ArcGisMapService.defaultAccessToken = accessToken;

    const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN";

    Cesium.Ion.defaultAccessToken = cesiumAccessToken;

    const arcGisImagery = Cesium.ArcGisMapServerImageryProvider.fromBasemapType(Cesium.ArcGisBaseMapType.SATELLITE, {
      enablePickFeatures: false
    });

    const viewer = new Cesium.Viewer("cesiumContainer", {

      baseLayer: Cesium.ImageryLayer.fromProviderAsync(arcGisImagery),

    });

    // Add Esri attribution
    // Learn more in https://esriurl.com/attribution
    const poweredByEsri = new Cesium.Credit("Powered by <a href='https://www.esri.com/en-us/home' target='_blank'>Esri</a>", true)
    viewer.creditDisplay.addStaticCredit(poweredByEsri);

    const tileLayer = Cesium.ArcGisMapServerImageryProvider.fromUrl("https://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/WV03_Kilauea_20180519_ShortwaveInfrared/MapServer", {
      token: accessToken,

      // Attribution text retrieved from https://www.arcgis.com/home/item.html?id=0dcf7df9bfb342cc9e0119f6da7daa45
      credit: new Cesium.Credit('Esri, Digital Globe', false)

    });

    viewer.scene.imageryLayers.add(
      Cesium.ImageryLayer.fromProviderAsync(tileLayer)
    );

  </script>

Go to Add image tiles.

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