Tutorial: Get global data

Learn how to query global demographic information for locations around the world with the GeoEnrichment service.

The GeoEnrichment service provides global demographic data for 170 countries and regions. To get globally available information, you use the KeyGlobalFacts data collection, which returns information for the total population, total households, average household size, and total population for males and females for a study area.

In this tutorial, you use ArcGIS REST JS to access the GeoEnrichment service and display global data for Eastern Europe.

Steps

Create a new pen

To get started, either complete the Display a scene tutorial or .

Set the API key

To access location services, you need an API key or OAuth 2.0 access token. To learn how to create and scope your key, visit the Create an API key tutorial.

Go to your dashboard to get an API key. The API key must be scoped to access the services used in this tutorial.

In CodePen, update apiKey to use your key. Update cesiumAccessToken to use your Cesium ion access token.

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      const apiKey = "YOUR_API_KEY";

      Cesium.ArcGisMapService.defaultAccessToken = apiKey;

      const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN";

      Cesium.Ion.defaultAccessToken = cesiumAccessToken;

      const arcGisImagery = Cesium.ArcGisMapServerImageryProvider.fromBasemapType(Cesium.ArcGisBaseMapType.SATELLITE);

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

        baseLayer: Cesium.ImageryLayer.fromProviderAsync(arcGisImagery),

      });

Add references to ArcGIS REST JS

In the <head> element, reference the demographics and request packages from ArcGIS REST JS.

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    <script src="https://cesium.com/downloads/cesiumjs/releases/1.107/Build/Cesium/Cesium.js"></script>
    <link href="https://cesium.com/downloads/cesiumjs/releases/1.107/Build/Cesium/Widgets/widgets.css" rel="stylesheet">

    <script src="https://unpkg.com/@esri/arcgis-rest-request@4.0.0/dist/bundled/request.umd.js"></script>
    <script src="https://unpkg.com/@esri/arcgis-rest-demographics@4.0.0/dist/bundled/demographics.umd.js"></script>
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Update the map position

Global data is available across many different countries and regions. Update the camera position to center on Europe.

Update the camera destination to [15.347,41.361, 3000000].

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    viewer.camera.setView({

        destination : Cesium.Cartesian3.fromDegrees(15.347,41.361, 3000000),

    });
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Add a click event handler

The study area for your application will be a one-mile buffer around a clicked location. Add an event handler that listens for left clicks on the map and retrieves their coordinates.

Add an event listener to the viewer's ScreenSpaceEventHandler that listens for left clicks.

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        destination : Cesium.Cartesian3.fromDegrees(15.347,41.361, 3000000),

    });

    viewer.screenSpaceEventHandler.setInputAction(function (movement) {

    }, Cesium.ScreenSpaceEventType.LEFT_CLICK)
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Retrieve the coordinates of the left click and convert them to Cartographic latitude and longitude. Pass the coordinates to a new function called getDemographics that accepts coordinates as degrees.

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        destination : Cesium.Cartesian3.fromDegrees(15.347,41.361, 3000000),

    });

    function getDemographics(longitude,latitude) {

    }

    viewer.screenSpaceEventHandler.setInputAction(function (movement) {

        const pickedPosition = viewer.scene.pickPosition(movement.position);
        const cartographic = Cesium.Cartographic.fromCartesian(pickedPosition);

        getDemographics(Cesium.Math.toDegrees(cartographic.longitude),Cesium.Math.toDegrees(cartographic.latitude))

    }, Cesium.ScreenSpaceEventType.LEFT_CLICK)
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Execute the query

Execute the queryDemographicData operation to retrieve local data. To query a circular buffer around a point, pass a geometry object with x and y coordinates. The default search radius is one mile.

Create a new ApiKeyManager using your API key to authenticate requests to the GeoEnrichment service.

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    const apiKey = "YOUR_API_KEY";

    Cesium.ArcGisMapService.defaultAccessToken = apiKey;

    const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
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Access the GeoEnrichment service with queryDemographicData. Set the studyAreas parameter to a point geometry made from the passed longitude and latitude. Set the dataCollections parameter to to ["KeyGlobalFacts"] to obtain global data for your location.

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    function getDemographics(longitude,latitude) {

        arcgisRest.queryDemographicData({
            studyAreas: [{geometry: {x:longitude, y:latitude}}],
            dataCollections: ["KeyGlobalFacts"],
            authentication:authentication
        })

    }
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Display results

If the query is successful, the response will contain a results array with a value containing a FeatureSet. The FeatureSet contains demographic information about the study area such as population, the number of males and females, and the average household size. A message will display if there is no data available for a selected location.

Access the FeatureSet returned by the service response. If data was returned, access the feature attributes to create a message.

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        arcgisRest.queryDemographicData({
            studyAreas: [{geometry: {x:longitude, y:latitude}}],
            dataCollections: ["KeyGlobalFacts"],
            authentication:authentication
        })

        .then((response) => {
             const featureSet = response.results[0].value.FeatureSet;

             let message;

             if (featureSet.length > 0 && featureSet[0].features.length > 0) {
                 const attributes = featureSet[0].features[0].attributes;
                 message =
                    `<b>Data for a 1 mile search radius</b>` +
                    [
                        `<br>Population: ${attributes.TOTPOP}`,
                        `Males: ${attributes.TOTMALES} `,
                        `Females: ${attributes.TOTFEMALES}`,
                        `Average Household Size: ${attributes.AVGHHSZ}`
                    ].join("<br>");
             }

             else {
                 message = "Data not available for this location.";
             }

         })
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Create a new Entity to display the results. Set the position to the clicked location, and set the description to the message you created.

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             else {
                 message = "Data not available for this location.";
             }

             let resultEntity = new Cesium.Entity({
                 name:"Demographic results",
                 description: message,
                 position:Cesium.Cartesian3.fromDegrees(longitude,latitude)
             });

             viewer.selectedEntity = resultEntity;
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Run the app

In CodePen, run your code to display the map.

You should now see a map centered over eastern Europe. Click on the map to query for demographic data and view the results in a popup

What's next?

Learn how to use additional ArcGIS location services in these tutorials:

Get local data

Query regional facts, spending trends, and psychographics with the GeoEnrichment service.

Search for an address

Find an address or place using a search box and the geocoding service.

Query features (SQL)

Execute a SQL query to access polygon features from a feature service.

CesiumJS

Tutorial: Get global data

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