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 reverseGeocodeEsri Leaflet Geocoder .
In this tutorial, you use the Esri Leaflet Geocoder to reverse geocode and find the closest address to your clicked location on the map.
Prerequisites You need an ArcGIS 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 apiKey to use your key.
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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 > Esri Leaflet </ title >
<!-- Load Leaflet from CDN -->
< link rel = "stylesheet" href = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.css" crossorigin = "" />
< script src = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.js" crossorigin = "" > </ script >
<!-- Load Esri Leaflet from CDN -->
< script src = "https://unpkg.com/esri-leaflet@^3.0.8/dist/esri-leaflet.js" > </ script >
< script src = "https://unpkg.com/esri-leaflet-vector@3.1.3/dist/esri-leaflet-vector.js" > </ script >
< style >
body {
margin : 0 ;
padding : 0 ;
}
#map {
position : absolute;
top : 0 ;
bottom : 0 ;
right : 0 ;
left : 0 ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const basemapEnum = "ArcGIS:Streets" ;
const map = L.map( "map" , {
minZoom : 2
}).setView([ 34.02 , - 118.805 ], 13 );
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey : apiKey
}).addTo(map);
</ script >
</ body >
</ html >
Reference the geocoder Import the Esri Leaflet Geocoder module from the CDN.
Use dark colors for code blocks
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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 > Reverse geocode tutorial </ title >
<!-- Load Leaflet from CDN -->
< link rel = "stylesheet" href = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.css" crossorigin = "" />
< script src = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.js" crossorigin = "" > </ script >
<!-- Load Esri Leaflet from CDN -->
< script src = "https://unpkg.com/esri-leaflet@^3.0.8/dist/esri-leaflet.js" > </ script >
< script src = "https://unpkg.com/esri-leaflet-vector@3.1.3/dist/esri-leaflet-vector.js" > </ script >
<!-- Load Esri Leaflet Geocoder from CDN -->
< script src = "https://unpkg.com/esri-leaflet-geocoder@3.1.3/dist/esri-leaflet-geocoder.js" > </ script >
< style >
body {
margin : 0 ;
padding : 0 ;
}
#map {
position : absolute;
top : 0 ;
bottom : 0 ;
right : 0 ;
left : 0 ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const basemapEnum = "ArcGIS:Navigation" ;
const map = L.map( "map" , {
minZoom : 2
}).setView([ 48.8566 , 2.3522 ], 13 ); // Paris
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey : apiKey
}).addTo(map);
const layerGroup = L.layerGroup().addTo(map);
map.on( "click" , function ( e ) {
L.esri.Geocoding
.reverseGeocode({
apikey : apiKey
})
.latlng(e.latlng)
.run( function ( error, result ) {
if (error) {
return ;
}
const lngLatString = ` ${ Math .round(result.latlng.lng * 100000 ) / 100000}, ${Math.round(result.latlng.lat * 100000) / 100000 } ` ;
layerGroup.clearLayers();
marker = L.marker(result.latlng)
.addTo(layerGroup)
.bindPopup( `<b> ${lngLatString} </b><p> ${result.address.Match_addr} </p>` )
.openPopup();
});
});
</ script >
</ body >
</ html >
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Add code to reverse geocode Add the following code to add the reverse geocoding functionality:
Change the basemap layer to Navigation and set the location to Paris. Create the geocoder. Create layer group for the marker. Create a click handler to use the point and call the reverse method. Add the marker and show a pop-up with the location and address information. Use dark colors for code blocks
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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 > Reverse geocode tutorial </ title >
<!-- Load Leaflet from CDN -->
< link rel = "stylesheet" href = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.css" crossorigin = "" />
< script src = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.js" crossorigin = "" > </ script >
<!-- Load Esri Leaflet from CDN -->
< script src = "https://unpkg.com/esri-leaflet@^3.0.8/dist/esri-leaflet.js" > </ script >
< script src = "https://unpkg.com/esri-leaflet-vector@3.1.3/dist/esri-leaflet-vector.js" > </ script >
<!-- Load Esri Leaflet Geocoder from CDN -->
< script src = "https://unpkg.com/esri-leaflet-geocoder@3.1.3/dist/esri-leaflet-geocoder.js" > </ script >
< style >
body {
margin : 0 ;
padding : 0 ;
}
#map {
position : absolute;
top : 0 ;
bottom : 0 ;
right : 0 ;
left : 0 ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const basemapEnum = "ArcGIS:Navigation" ;
const map = L.map( "map" , {
minZoom : 2
}).setView([ 48.8566 , 2.3522 ], 13 ); // Paris
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey : apiKey
}).addTo(map);
const layerGroup = L.layerGroup().addTo(map);
map.on( "click" , function ( e ) {
L.esri.Geocoding
.reverseGeocode({
apikey : apiKey
})
.latlng(e.latlng)
.run( function ( error, result ) {
if (error) {
return ;
}
const lngLatString = ` ${ Math .round(result.latlng.lng * 100000 ) / 100000}, ${Math.round(result.latlng.lat * 100000) / 100000 } ` ;
layerGroup.clearLayers();
marker = L.marker(result.latlng)
.addTo(layerGroup)
.bindPopup( `<b> ${lngLatString} </b><p> ${result.address.Match_addr} </p>` )
.openPopup();
});
});
</ script >
</ body >
</ html >
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Run the app 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.
What's next? Learn how to use additional ArcGIS location services in these tutorials:
