Learn how to find an address near a location with the geocoding service .
Reverse geocoding is the process of converting a location to an address or place . To reverse geocode, you use the Geocoding service and the reverseGeocode
In this tutorial, you use the reverseGeocodeArcGIS REST JS to reverse geocode and find the closest address to your clicked location on the map.
You need an ArcGIS account to access the developer dashboard and create an API key .
To get started, either complete the Display a map tutorial or use this pen . To access location services , you need an API key or OAuth 2.0 access token .
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.
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const apiKey = "YOUR_API_KEY" ;
const basemapId = "ArcGIS:Streets" ;
const basemapURL = "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey;
olms(map, basemapURL);
This tutorial uses ArcGIS REST JS for reverse geocoding, and the ol-popup library to display pop-ups.
In the <head> element, add references to the ArcGIS REST JS and ol-popup libraries.
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1, maximum-scale=1, user-scalable=no" />
< title > OpenLayers Tutorials: Reverse Geocode </ title >
< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@6.1.4/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-geocoding@3.0.0/dist/umd/geocoding.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.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" />
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const map = new ol.Map({
target : "map"
});
const view = new ol.View({
center : ol.proj.fromLonLat([ 2.3522 , 48.8566 ]), // Paris
zoom : 12
});
map.setView(view);
const popup = new Popup();
map.addOverlay(popup);
map.on( "click" , ( e ) => {
const coords = ol.proj.transform(e.coordinate, "EPSG:3857" , "EPSG:4326" );
const authentication = new arcgisRest.ApiKey({
key : apiKey
});
arcgisRest
.reverseGeocode(coords, {
authentication
})
.then( ( result ) => {
const message =
` ${result.address.LongLabel} <br>` + ` ${result.location.x.toLocaleString()} , ${result.location.y.toLocaleString()} ` ;
popup.show(e.coordinate, message);
})
.catch( ( error ) => {
popup.hide();
console .error(error);
});
});
const basemapId = "ArcGIS:Navigation" ;
olms.apply(map, "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey);
</ script >
</ body >
</ html >
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A navigation basemap layer is typically used in geocoding and routing applications. Update the basemap layer to use ArcGIS:Navigation.
Update the basemap and the map initialization to center on location [2.3522,48.8566], Paris.
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1, maximum-scale=1, user-scalable=no" />
< title > OpenLayers Tutorials: Reverse Geocode </ title >
< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@6.1.4/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-geocoding@3.0.0/dist/umd/geocoding.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.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" />
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const map = new ol.Map({
target : "map"
});
const view = new ol.View({
center : ol.proj.fromLonLat([ 2.3522 , 48.8566 ]), // Paris
zoom : 12
});
map.setView(view);
const popup = new Popup();
map.addOverlay(popup);
map.on( "click" , ( e ) => {
const coords = ol.proj.transform(e.coordinate, "EPSG:3857" , "EPSG:4326" );
const authentication = new arcgisRest.ApiKey({
key : apiKey
});
arcgisRest
.reverseGeocode(coords, {
authentication
})
.then( ( result ) => {
const message =
` ${result.address.LongLabel} <br>` + ` ${result.location.x.toLocaleString()} , ${result.location.y.toLocaleString()} ` ;
popup.show(e.coordinate, message);
})
.catch( ( error ) => {
popup.hide();
console .error(error);
});
});
const basemapId = "ArcGIS:Navigation" ;
olms.apply(map, "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey);
</ script >
</ body >
</ html >
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Create a PopupOverlaymap.addOverlay
Create a Popuppopup variable. Add it to the map with map.addOverlay
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1, maximum-scale=1, user-scalable=no" />
< title > OpenLayers Tutorials: Reverse Geocode </ title >
< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@6.1.4/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-geocoding@3.0.0/dist/umd/geocoding.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.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" />
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const map = new ol.Map({
target : "map"
});
const view = new ol.View({
center : ol.proj.fromLonLat([ 2.3522 , 48.8566 ]), // Paris
zoom : 12
});
map.setView(view);
const popup = new Popup();
map.addOverlay(popup);
map.on( "click" , ( e ) => {
const coords = ol.proj.transform(e.coordinate, "EPSG:3857" , "EPSG:4326" );
const authentication = new arcgisRest.ApiKey({
key : apiKey
});
arcgisRest
.reverseGeocode(coords, {
authentication
})
.then( ( result ) => {
const message =
` ${result.address.LongLabel} <br>` + ` ${result.location.x.toLocaleString()} , ${result.location.y.toLocaleString()} ` ;
popup.show(e.coordinate, message);
})
.catch( ( error ) => {
popup.hide();
console .error(error);
});
});
const basemapId = "ArcGIS:Navigation" ;
olms.apply(map, "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey);
</ script >
</ body >
</ html >
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Before you call the reverse geocoding service, you need the location of the clicked point. Use ol.proj.transform
Add a click handler to the map. Inside, convert the clicked coordinates from the event object into latitude and longitude.
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1, maximum-scale=1, user-scalable=no" />
< title > OpenLayers Tutorials: Reverse Geocode </ title >
< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@6.1.4/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-geocoding@3.0.0/dist/umd/geocoding.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.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" />
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const map = new ol.Map({
target : "map"
});
const view = new ol.View({
center : ol.proj.fromLonLat([ 2.3522 , 48.8566 ]), // Paris
zoom : 12
});
map.setView(view);
const popup = new Popup();
map.addOverlay(popup);
map.on( "click" , ( e ) => {
const coords = ol.proj.transform(e.coordinate, "EPSG:3857" , "EPSG:4326" );
const authentication = new arcgisRest.ApiKey({
key : apiKey
});
arcgisRest
.reverseGeocode(coords, {
authentication
})
.then( ( result ) => {
const message =
` ${result.address.LongLabel} <br>` + ` ${result.location.x.toLocaleString()} , ${result.location.y.toLocaleString()} ` ;
popup.show(e.coordinate, message);
})
.catch( ( error ) => {
popup.hide();
console .error(error);
});
});
const basemapId = "ArcGIS:Navigation" ;
olms.apply(map, "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey);
</ script >
</ body >
</ html >
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Use the ArcGIS REST JS reverseGeocode
Inside the click handler, create a new arcgisRest.ApiKey to access the geocoding service. Call the arcgisRest.reverseGeocode
In order to access ArcGIS location services with ArcGIS REST JS , you need an access token , either as an API key or 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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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1, maximum-scale=1, user-scalable=no" />
< title > OpenLayers Tutorials: Reverse Geocode </ title >
< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@6.1.4/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-geocoding@3.0.0/dist/umd/geocoding.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.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" />
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const map = new ol.Map({
target : "map"
});
const view = new ol.View({
center : ol.proj.fromLonLat([ 2.3522 , 48.8566 ]), // Paris
zoom : 12
});
map.setView(view);
const popup = new Popup();
map.addOverlay(popup);
map.on( "click" , ( e ) => {
const coords = ol.proj.transform(e.coordinate, "EPSG:3857" , "EPSG:4326" );
const authentication = new arcgisRest.ApiKey({
key : apiKey
});
arcgisRest
.reverseGeocode(coords, {
authentication
})
.then( ( result ) => {
const message =
` ${result.address.LongLabel} <br>` + ` ${result.location.x.toLocaleString()} , ${result.location.y.toLocaleString()} ` ;
popup.show(e.coordinate, message);
})
.catch( ( error ) => {
popup.hide();
console .error(error);
});
});
const basemapId = "ArcGIS:Navigation" ;
olms.apply(map, "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey);
</ script >
</ body >
</ html >
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The response from the reverseGeocodeaddress is a structured object with fields such as street name and business name. location contains the location of the returned address, which may differ from the coordinates you provided. Display these values in a pop-up. Use a catch handler to check for errors accessing the service.
Add a then handler. Use popup.show to display the resulting address and coordinates.
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1, maximum-scale=1, user-scalable=no" />
< title > OpenLayers Tutorials: Reverse Geocode </ title >
< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@6.1.4/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-geocoding@3.0.0/dist/umd/geocoding.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.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" />
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const map = new ol.Map({
target : "map"
});
const view = new ol.View({
center : ol.proj.fromLonLat([ 2.3522 , 48.8566 ]), // Paris
zoom : 12
});
map.setView(view);
const popup = new Popup();
map.addOverlay(popup);
map.on( "click" , ( e ) => {
const coords = ol.proj.transform(e.coordinate, "EPSG:3857" , "EPSG:4326" );
const authentication = new arcgisRest.ApiKey({
key : apiKey
});
arcgisRest
.reverseGeocode(coords, {
authentication
})
.then( ( result ) => {
const message =
` ${result.address.LongLabel} <br>` + ` ${result.location.x.toLocaleString()} , ${result.location.y.toLocaleString()} ` ;
popup.show(e.coordinate, message);
})
.catch( ( error ) => {
popup.hide();
console .error(error);
});
});
const basemapId = "ArcGIS:Navigation" ;
olms.apply(map, "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey);
</ script >
</ body >
</ html >
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Add a catch handler. In most cases, errors occur when the user clicks in the water, so simply hide the pop-up when this happens. Use popup.hide() to remove the pop-up and then write the error to the console.
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Add line. Add line. Add line. Add line.
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1, maximum-scale=1, user-scalable=no" />
< title > OpenLayers Tutorials: Reverse Geocode </ title >
< style >
html ,
body ,
#map {
padding : 0 ;
margin : 0 ;
height : 100% ;
width : 100% ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
< link rel = "stylesheet" href = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/css/ol.css" type = "text/css" />
< script src = "https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js" > </ script >
< script src = "https://cdn.jsdelivr.net/npm/ol-mapbox-style@6.1.4/dist/olms.js" type = "text/javascript" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-geocoding@3.0.0/dist/umd/geocoding.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.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" />
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const map = new ol.Map({
target : "map"
});
const view = new ol.View({
center : ol.proj.fromLonLat([ 2.3522 , 48.8566 ]), // Paris
zoom : 12
});
map.setView(view);
const popup = new Popup();
map.addOverlay(popup);
map.on( "click" , ( e ) => {
const coords = ol.proj.transform(e.coordinate, "EPSG:3857" , "EPSG:4326" );
const authentication = new arcgisRest.ApiKey({
key : apiKey
});
arcgisRest
.reverseGeocode(coords, {
authentication
})
.then( ( result ) => {
const message =
` ${result.address.LongLabel} <br>` + ` ${result.location.x.toLocaleString()} , ${result.location.y.toLocaleString()} ` ;
popup.show(e.coordinate, message);
})
.catch( ( error ) => {
popup.hide();
console .error(error);
});
});
const basemapId = "ArcGIS:Navigation" ;
olms.apply(map, "https://basemaps-api.arcgis.com/arcgis/rest/services/styles/" + basemapId + "?type=style&token=" + apiKey);
</ script >
</ body >
</ html >
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In CodePen , run your code to display the map.
Click on the map to reverse geocode the clicked point and display a pop-up with the closest address and coordinates.
Learn how to use additional ArcGIS location services in these tutorials:
