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 map 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.
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const apiKey = "YOUR_API_KEY" ;
const basemapId = "arcgis/streets" ;
const basemapURL = `https://basemapstyles-api.arcgis.com/arcgis/rest/services/styles/v2/styles/ ${basemapId} ?token= ${apiKey} ` ;
olms.apply(map, basemapURL);
Add references to ArcGIS REST JS This tutorial uses ArcGIS REST JS to access the geoenrichment service. It also uses the ol-popup library to display pop-ups.
Reference the ArcGIS REST JS and ol-popup libraries.
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< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.15.1/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.15.1/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@10.5.0/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@4.0.0/dist/bundled/request.umd.js" > </ script >
< script src = "https://unpkg.com/ol-popup@4.0.0" > </ script >
< link rel = "stylesheet" href = "https://unpkg.com/ol-popup@4.0.0/src/ol-popup.css" />
< script src = "https://unpkg.com/@esri/arcgis-rest-demographics@4.0.0/dist/bundled/demographics.umd.js" > </ script >
Update the map Update the center parameter to [-86.7679, 36.1745] and set zoom to 12.
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map.setView (
new ol.View ( {
center : ol.proj.fromLonLat ( [ - 86.7679 , 36.1745 ] ) ,
zoom : 12
} )
) ;
Update the basemap to arcgis/navigation.
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const basemapId = "arcgis/navigation" ;
const basemapURL = ` https : //basemapstyles-api.arcgis.com/arcgis/rest/services/styles/v2/styles/ $ {basemapId } ?token = $ {apiKey } `;
olms.apply ( map, basemapURL ) .then ( function ( map ) {
Add a click event handler You need a location before calling the GeoEnrichment service . To get a location, you can add a handler to the Mapclick event. The click handler will be called with an object containing a Coordinate
You can change the mouse cursor to a crosshair to make it easier to click precisely. Modify the CSS style of its canvas element to do this.
In the <style> , set the mouse cursor style to crosshair.
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< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
#map canvas {
cursor : crosshair;
}
.ol-popup {
width : 250px ;
}
</ style >
Add a handler for the click
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olms.apply(map, basemapURL).then( function ( map ) {
map.on( "click" , ( event ) => {
const lonLat = ol.proj.toLonLat(event.coordinate);
});
});
Execute the query You pass one or more study areas to arcgis to specify the location of your query. To query a circular buffer around a point, pass a geometry object with x and y parameters. The default search radius is one mile.
Inside the click handler, create a new arcgis to access the GeoEnrichment service. Call the service using querystudypoint geometry made from the event's lng property.
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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map.on( "click" , ( event ) => {
const lonLat = ol.proj.toLonLat(event.coordinate);
const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
arcgisRest
.queryDemographicData({
studyAreas : [{ geometry : { x : lonLat[ 0 ], y : lonLat[ 1 ] } }],
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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const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
arcgisRest
.queryDemographicData({
studyAreas : [{ geometry : { x : lonLat[ 0 ], y : lonLat[ 1 ] } }],
authentication : authentication,
analysisVariables : [
"PsychographicsShopping.MP28067A_B" ,
"transportation.X7027_I" ,
"entertainment.X9005_I" ,
"lifemodegroupsNEW.TLIFENAME"
],
})
Display the results If the query is successful, the response will contain a results array with a value containing a Feature. The FeatureSet contains attributes such as population within the study area, the number of males and females, and the average household size. To learn more, visit the GeoEnrichment service page.
You will display the results of the query in a pop-up.
Before the click handler, create a Popuppopup variable. Add it to the map with map.add
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const basemapId = "arcgis/navigation" ;
const basemapURL = `https://basemapstyles-api.arcgis.com/arcgis/rest/services/styles/v2/styles/ ${basemapId} ?token= ${apiKey} ` ;
olms.apply(map, basemapURL).then( function ( map ) {
const popup = new Popup();
map.addOverlay(popup);
Add a then handler to the query call. Inside, store the Feature from the first result in a variable.
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arcgisRest
.queryDemographicData({
studyAreas : [{ geometry : { x : lonLat[ 0 ], y : lonLat[ 1 ] } }],
authentication : authentication,
analysisVariables : [
"PsychographicsShopping.MP28067A_B" ,
"transportation.X7027_I" ,
"entertainment.X9005_I" ,
"lifemodegroupsNEW.TLIFENAME"
],
})
.then( ( response ) => {
const data = document .getElementById( "data" );
const featureSet = response.results[ 0 ].value.FeatureSet;
});
If the Feature contains data, use its attributes to build a message to show. Use popup.show to display the message at the location of the mouse click. Otherwise, display a "Data not available" message.
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const data = document .getElementById( "data" );
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." ;
}
popup.show(event.coordinate, message);
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:
