Find places in a bounding box

Learn how to perform a text-based search to find places within a bounding box.

A bounding box search finds places within an extent using the places service. An extent typically represents the visible area of a map. To perform a bounding box search, you use the places package from ArcGIS REST JS. With the results of the search, you can make another request to the service and return place attributes such as street address and telephone number.

In this tutorial, you use ArcGIS REST JS to perform a bounding box search based on the visible extent on the map and return details about each place. It includes starter code that uses Calcite components to create a basic search interface.

Prerequisites

Steps

Get the starter code

1. To get started, use this CodePen. It contains the Calcite Components necessary to create this application, as well as a blank Leaflet map.

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.

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

2. 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),
   
         });
   

Reference ArcGIS REST JS

1. Reference the routing and request packages from ArcGIS REST JS.

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       <!-- Load Cesium from CDN -->
       <script src="https://cesium.com/downloads/cesiumjs/releases/1.114/Build/Cesium/Cesium.js"></script>
       <link href="https://cesium.com/downloads/cesiumjs/releases/1.114/Build/Cesium/Widgets/widgets.css" rel="stylesheet">
       <!-- Calcite components -->
       <script type="module" src="https://js.arcgis.com/calcite-components/1.0.5/calcite.esm.js"></script>
       <link rel="stylesheet" type="text/css" href="https://js.arcgis.com/calcite-components/1.0.5/calcite.css" />
   
       <!-- ArcGIS REST JS: request and places -->
       <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-places@1.0.0/dist/bundled/places.umd.js"></script>
   

2. Create a REST JS ApiKeyManager using your API key.

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       viewer.camera.setView({
           destination : Cesium.Cartesian3.fromDegrees(-122.32116, 47.57737, 12000),
           orientation : {
               heading : Cesium.Math.toRadians(0.0),
               pitch : Cesium.Math.toRadians(-70.0),
           }
       });
   
       const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
   

Add event listeners

The starter code provided for this tutorial includes a basic user interface with a text input and category buttons. Add event listeners to this interface to make requests to the places service on when they are clicked.

1. Create a showPlaces function to make requests to the places service.

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       const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
   
       function showPlaces(query) {
   
       };
   

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2. Add an event listener to the search button that calls showPlaces on click.

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       const control = document.getElementById("place-control");
       const input = document.getElementById("search-input");
       const placeKeywords = ["Restaurants", "Hotels", "Museums", "ATMs", "Breweries"];
   
       document.getElementById("search-button").addEventListener("click", e => {
           showPlaces(input.value)
       });
   
       placeKeywords.forEach(category => {
           const categoryButton = document.createElement("calcite-button");
           categoryButton.setAttribute("class","category-button");
           categoryButton.setAttribute("round",true);
           categoryButton.setAttribute("scale","s");
           categoryButton.setAttribute("kind","inverse")
           categoryButton.innerHTML = category;
           categoryButton.id = category;
           control.appendChild(categoryButton);
   
       });
   

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3. Add an event listener to each category button that calls showPlaces on click.

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       placeKeywords.forEach(category => {
           const categoryButton = document.createElement("calcite-button");
           categoryButton.setAttribute("class","category-button");
           categoryButton.setAttribute("round",true);
           categoryButton.setAttribute("scale","s");
           categoryButton.setAttribute("kind","inverse")
           categoryButton.innerHTML = category;
           categoryButton.id = category;
           control.appendChild(categoryButton);
   
           categoryButton.addEventListener("click", e => {
               input.value = category;
               showPlaces(category)
           })
   
       });
   

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Find places in the map bounds

1. Calculate the current visible extent of the CesiumJS scene with computeViewRectangle. Transform the bounds to latitude and longitude degrees for use with the places API.

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       function showPlaces(query) {
   
           const rect = viewer.camera.computeViewRectangle();
           const bounds = [rect.west,rect.south,rect.east,rect.north];
           for (let i=0;i<bounds.length;i++){
               bounds[i] = Cesium.Math.toDegrees(bounds[i]);
           }
   
       };
   

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2. Use the ArcGIS REST JS findPlacesWithinExtent operation to make a request to the places service. Set the searchText parameter to your query and pass the current map bounding box to the xmin,xmax,ymin, and ymax parameters.

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       function showPlaces(query) {
   
           const rect = viewer.camera.computeViewRectangle();
           const bounds = [rect.west,rect.south,rect.east,rect.north];
           for (let i=0;i<bounds.length;i++){
               bounds[i] = Cesium.Math.toDegrees(bounds[i]);
           }
   
           arcgisRest.findPlacesWithinExtent({
               xmin: bounds[0],
               ymin: bounds[1],
               xmax: bounds[2],
               ymax: bounds[3],
               searchText: query,
               authentication,
               f:"geojson"
           })
   
       };
   

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Display results

The response from the places service will contain a list of place results. Each result will include a place's x/y coordinates, name, category, and unique ID. Add these each result to your CesiumJS application as an Entity.

1. Access the service results. For each result, add a new Entity containing a name, an id, and a position obtained from the result information.

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           arcgisRest.findPlacesWithinExtent({
               xmin: bounds[0],
               ymin: bounds[1],
               xmax: bounds[2],
               ymax: bounds[3],
               searchText: query,
               authentication,
               f:"geojson"
           })
   
           .then((response)=>{
               response.results.forEach(result => {
                   viewer.entities.add({
                       name: result.name,
                       description: "Details loading...",
                       id: result.placeId,
                       position: Cesium.Cartesian3.fromDegrees(result.location.x,result.location.y),
   
                   })
               });
           });
   

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2. Create a new PinBuilder to style the appearance of results. When a new request is made, remove all existing entities from the viewer.

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       const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
   
       const pinBuilder = new Cesium.PinBuilder();
   
       function showPlaces(query) {
   
           viewer.entities.removeAll();
   
           const rect = viewer.camera.computeViewRectangle();
           const bounds = [rect.west,rect.south,rect.east,rect.north];
           for (let i=0;i<bounds.length;i++){
               bounds[i] = Cesium.Math.toDegrees(bounds[i]);
           }
   
           arcgisRest.findPlacesWithinExtent({
               xmin: bounds[0],
               ymin: bounds[1],
               xmax: bounds[2],
               ymax: bounds[3],
               searchText: query,
               authentication,
               f:"geojson"
           })
   
           .then((response)=>{
               response.results.forEach(result => {
                   viewer.entities.add({
                       name: result.name,
                       description: "Details loading...",
                       id: result.placeId,
                       position: Cesium.Cartesian3.fromDegrees(result.location.x,result.location.y),
   
                   })
               });
           });
   
       };
   

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3. Add a billboard to each result entity. Style the billboards with a blue pin icon.

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           .then((response)=>{
               response.results.forEach(result => {
                   viewer.entities.add({
                       name: result.name,
                       description: "Details loading...",
                       id: result.placeId,
                       position: Cesium.Cartesian3.fromDegrees(result.location.x,result.location.y),
   
                       billboard: {
                           verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
                           heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
   
                           image: pinBuilder.fromColor(Cesium.Color.ROYALBLUE,48).toDataURL(),
   
                       }
   
                   })
               });
           });
   

   Expand

4. Run the app. When you click a category button or search for a phrase, the map should display a set of points representing place results.

Display the place address and phone number

You can access more information about a place by using the unique placeId associated with it. Configure a popup that will perform a getPlaceDetails request when the user clicks on an entity. Display the address and phone number of the clicked location.

1. Create a new ScreenSpaceEventHandler for the viewer to listen for clicks in the scene. Add a conditional statement to only take action if the user clicked on an entity.

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       const getDetails = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas).setInputAction(event => {
           if (viewer.selectedEntity) {
   
           }
       },Cesium.ScreenSpaceEventType.LEFT_CLICK)
   

   Expand

2. Use the ArcGIS REST JS getPlaceDetails function to get more information about the clicked place. Pass the placeId of the clicked Entity, and set the requestedFields parameter to return the streetAddress and telephone properties.

   More info
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       const getDetails = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas).setInputAction(event => {
           if (viewer.selectedEntity) {
   
               arcgisRest.getPlaceDetails(({
                   placeId: viewer.selectedEntity.id,
                   authentication,
                   requestedFields: ["address:streetAddress", "contactInfo:telephone"]
               }))
   
           }
       },Cesium.ScreenSpaceEventType.LEFT_CLICK)
   

   Expand

3. Access the service response. Set the Entity description to display results if they are available.

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       const getDetails = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas).setInputAction(event => {
           if (viewer.selectedEntity) {
   
               arcgisRest.getPlaceDetails(({
                   placeId: viewer.selectedEntity.id,
                   authentication,
                   requestedFields: ["address:streetAddress", "contactInfo:telephone"]
               }))
   
               .then((result)=>{
                   let description = ``;
                   if (result.placeDetails.address.streetAddress) description += `${result.placeDetails.address.streetAddress}<br>`;
                   if (result.placeDetails.contactInfo.telephone) description += `${result.placeDetails.contactInfo.telephone}`;
   
                   viewer.selectedEntity.description = description;
   
               });
   
           }
       },Cesium.ScreenSpaceEventType.LEFT_CLICK)
   

   Expand

Run the app

In CodePen, run your code to display the application. The app should display a map with a search control. Upon clicking a button or entering a phrase, place results should appear on the map. Clicking a result will submit another service request to get the place address and phone number.

What's next?

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