Learn how to access local data, such as spending trends, for the United States with the GeoEnrichment service .
The GeoEnrichment service provides detailed local data for specific countries. Each individual data field is represented by an analysis variable that are organized into data categories such as spending and market behaviors such as 2022 Educational Attainment or 2022 Seen Video Ad at Gas Station Last 30 Days. The data available vary by country and by data provider.
In this tutorial, you use ArcGIS REST JS to access the GeoEnrichment service and display spending trend information for a study area within the United States.
Prerequisites You need an ArcGIS Developer or ArcGIS Online account to access the developer dashboard and create an API key .
Steps Create a new pen To get started, either complete the Display a scene tutorial or use this pen . 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 api to use your key. Update cesium 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 demographicsrequest
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< script src = "https://cesium.com/downloads/cesiumjs/releases/1.105/Build/Cesium/Cesium.js" > </ script >
< link href = "https://cesium.com/downloads/cesiumjs/releases/1.105/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 >
Update the map position Local data is only available in select countries and regions. Update the camera position to center on Nashville, Tennessee.
Update the camera destination to [-86.7679, 36.1345, 15000], Nashville TN.
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viewer.camera.setView({
destination : Cesium.Cartesian3.fromDegrees(- 86.7679 , 36.1345 , 15000 ),
orientation : {
heading : Cesium.Math.toRadians( 0.0 ),
pitch : Cesium.Math.toRadians(- 80.0 )
}});
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 Screen
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destination : Cesium.Cartesian3.fromDegrees(- 86.7679 , 36.1345 , 15000 ),
orientation : {
heading : Cesium.Math.toRadians( 0.0 ),
pitch : Cesium.Math.toRadians(- 80.0 )
}});
viewer.screenSpaceEventHandler.setInputAction( function ( movement ) {
}, Cesium.ScreenSpaceEventType.LEFT_CLICK)
Retrieve the coordinates of the left click and convert them to Cartographicget that accepts coordinates as degrees.
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destination : Cesium.Cartesian3.fromDegrees(- 86.7679 , 36.1345 , 15000 ),
orientation : {
heading : Cesium.Math.toRadians( 0.0 ),
pitch : Cesium.Math.toRadians(- 80.0 )
}});
function getLocalData ( longitude,latitude ) {
}
viewer.screenSpaceEventHandler.setInputAction( function ( movement ) {
const pickedPosition = viewer.scene.pickPosition(movement.position);
const cartographic = Cesium.Cartographic.fromCartesian(pickedPosition);
getLocalData(Cesium.Math.toDegrees(cartographic.longitude),Cesium.Math.toDegrees(cartographic.latitude))
}, Cesium.ScreenSpaceEventType.LEFT_CLICK)
Execute the query Execute the querygeometry object with x and y coordinates. The default search radius is one mile.
Create a new Api using your API key to authenticate requests to the GeoEnrichment service.
In order to access ArcGIS location services with ArcGIS REST JS , you need an access token , either an API key or a token created by OAuth 2.0 authentication. API keys have scopes, so make sure to scope your API key with permissions to access the service.
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const apiKey = "YOUR_API_KEY" ;
Cesium.ArcGisMapService.defaultAccessToken = apiKey;
const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
Access the GeoEnrichment service with querystudypoint geometry made from the passed longitude and latitude. Also pass the authentication object.
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function getLocalData ( longitude,latitude ) {
arcgisRest.queryDemographicData({
studyAreas : [{ geometry : { x :longitude, y :latitude}}],
authentication :authentication,
})
}
Set the analysis parameter with the following analysis variables:
Buys Natural Products (Psychographics) Auto/Truck Rental on Trips (transportation.X7027_) Membership fees for Social Clubs (entertainment.X9005_) Tapestry group name (lifemodegroups) Expand
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function getLocalData ( longitude,latitude ) {
arcgisRest.queryDemographicData({
studyAreas : [{ geometry : { x :longitude, y :latitude}}],
authentication :authentication,
analysisVariables : [
"PsychographicsShopping.MP28067A_B" ,
"transportation.X7027_I" ,
"entertainment.X9005_I" ,
"lifemodegroupsNEW.TLIFENAME"
]
})
}
Display results If the query is successful, the response will contain a results array with a value containing a Feature. The Feature contains values representing the prevalence of each specified analysis variable in the provided study area. A message will display if there is no data available for a location selected.
Access the Feature returned by the service response. If data was returned, access the feature attributes to create a message.
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analysisVariables : [
"PsychographicsShopping.MP28067A_B" ,
"transportation.X7027_I" ,
"entertainment.X9005_I" ,
"lifemodegroupsNEW.TLIFENAME"
]
})
.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>" +
[
`Buys Natural Products: ${attributes.MP28067a_B} ` ,
`Membership fees for Social Clubs: ${attributes.X9005_I} ` ,
`Auto/Truck Rental on Trips: ${attributes.X7027_I} ` ,
`Tapestry group name: ${attributes.TLIFENAME} `
].join( "<br>" );
}
else {
message = "Data not available for this location." ;
}
})
Create a new Entityposition 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;
Run the app In CodePen , run your code to display the map.
You should now see a map centered over Nashville. Click on the map to access the GeoEnrichment service to return local information and view the results in a popup.
What's next? Learn how to use additional ArcGIS location services in these tutorials:
