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Tutorial: Display a GeoJSON pop-up | CesiumJS

Learn how to display feature attributes in a pop-up.

Display feature attributes in a pop-up using API key authentication Display feature attributes in a pop-up using user authentication

A pop-up, also known as a "popup", is a visual element that displays information about a feature when it is clicked. You typically style and configure a pop-up using HTML and CSS for each layer in a map. Pop-ups can display attribute values, calculated values, or rich content such as images, charts, or videos.

In this tutorial, you customize the interactive pop-up created by CesiumJS for the Trailheads feature service in the Santa Monica Mountains. When a feature is clicked, a pop-up will display containing the name of the trail and the service that manages it.

Portal and data services guide

To learn how to publish your own data as a feature service, go to Data hosting.

Prerequisites

An ArcGIS Location Platform or ArcGIS Online account.

Steps Get the starter app

Select a type of authentication below and follow the steps to create a new application.

You can choose one of the following to create a new CodePen:

  1. Go to the Display a scene tutorial and download the solution.
  2. Unzip the folder and open it in a text editor of your choice, such as Visual Studio Code. The starter app includes the following:
Set up authentication

Create developer credentials in your portal for the type of authentication you selected.

Create a new API key credential with the correct privileges to access the resources used in this tutorial.

  1. Go to the Create an API key tutorial and create an API key with the following privilege(s):
  2. Copy the API key access token to your clipboard when prompted.

Create a new OAuth credential to register the application.

  1. Go to the Create OAuth credentials for user authentication tutorial to create an OAuth credential.
  2. Copy the Client ID and Redirect URL from your OAuth credentials item and paste them to a safe location. They will be used in a later step.
Note

To use this application, users must have an ArcGIS account with the necessary privileges to access all resources and services.

Set developer credentials

Use the API key or OAuth developer credentials created in the previous step in your application.

  1. Add <script> elements in the HTML <body> and create an accessToken variable to store your access token. Set YOUR_ACCESS_TOKEN with the access token you previously copied from your API key credentials.

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  <script>

    /* Use for API key authentication */
    const accessToken = "YOUR_ACCESS_TOKEN";

  </script>

  2. Set the defaultAccessToken included with Cesium to authenticate requests to the ArcGIS services used in this tutorial.

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  <script>

    /* Use for API key authentication */
    const accessToken = "YOUR_ACCESS_TOKEN";

    Cesium.ArcGisMapService.defaultAccessToken = accessToken;

  </script>

  1. In both the index.html and callback.html files, set the properties of clientId and redirectUri with the client ID and redirect URL of your OAuth credentials.

    index.html

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    /* Use for user authentication */
    const clientId = "YOUR_CLIENT_ID"; // Your client ID from OAuth credentials
    const redirectUri = "YOUR_REDIRECT_URI"; // The redirect URL registered in your OAuth credentials
    const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
      clientId,
      redirectUri,
      portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
    })

    const accessToken = session.token;

    callback.html

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    arcgisRest.ArcGISIdentityManager.completeOAuth2({
      clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
      redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
      portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
    })

  2. Run the app and ensure you can sign in successfully.

    If you are unable to sign in, make sure you have the correct redirect URL and port. This URL varies based on your application and typically takes the format of https://<server>[:port]/callback.html or http://my-arcgis-app:/auth. For example, if you are running an application on http://127.0.0.1:5500/, set http://127.0.0.1:5500/callback.html as your redirect URL in the index.html and callback.html file and your developer credential. They all have to match!

  3. Set the defaultAccessToken included with Cesium to authenticate requests to the ArcGIS services used in this tutorial.

    index.html

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    Cesium.ArcGisMapService.defaultAccessToken = accessToken;
Get a Cesium ion access token

All Cesium applications must use an access token provided through Cesium ion. This token allows you to access assets such as Cesium World Terrain in your application.

  1. Go to your Cesium ion dashboard to generate an access token. Copy the key to your clipboard.

  2. Create a cesiumAccessToken variable and replace YOUR_CESIUM_ACCESS_TOKEN with the access token you copied from the Cesium ion dashboard.

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  <script>

    /* Use for API key authentication */
    const accessToken = "YOUR_ACCESS_TOKEN";

    // or

    /* Use for user authentication */
    // const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
    //   clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
    //   redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
    //   portal: "YOUR_PORTAL_URL" // Your portal URL
    // })

    // const accessToken = session.token;

    Cesium.ArcGisMapService.defaultAccessToken = accessToken;

    const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN";

  </script>

  3. Configure Cesium.Ion.defaultAccessToken with the Cesium access token to validate the application.

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  <script>

    /* Use for API key authentication */
    const accessToken = "YOUR_ACCESS_TOKEN";

    // or

    /* Use for user authentication */
    // const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
    //   clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
    //   redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
    //   portal: "YOUR_PORTAL_URL" // Your portal URL
    // })

    // const accessToken = session.token;

    Cesium.ArcGisMapService.defaultAccessToken = accessToken;

    const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN";

    Cesium.Ion.defaultAccessToken = cesiumAccessToken;

  </script>
Add references to ArcGIS REST JS

  1. In the <head> element, reference the feature-service and request packages from ArcGIS REST JS.

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    <script src="https://cesium.com/downloads/cesiumjs/releases/1.132/Build/Cesium/Cesium.js"></script>
    <link href="https://cesium.com/downloads/cesiumjs/releases/1.132/Build/Cesium/Widgets/widgets.css" rel="stylesheet">

    <script src="https://unpkg.com/@esri/arcgis-rest-request@4/dist/bundled/request.umd.js"></script>
    <script src="https://unpkg.com/@esri/arcgis-rest-feature-service@4/dist/bundled/feature-service.umd.js"></script>
Add the trailheads layer

Use arcgisRest.queryFeatures to query the Trailheads URL and add features to the scene as GeoJSON.

  1. In the <body>, create an arcgisRest.ApiKeyManager using your access token to authenticate requests to the feature service.

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    /* Use for API key authentication */
    const accessToken = "YOUR_ACCESS_TOKEN";

    // or

    /* Use for user authentication */
    // const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
    //   clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
    //   redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
    //   portal: "YOUR_PORTAL_URL" // Your portal URL
    // })

    // const accessToken = session.token;

    Cesium.ArcGisMapService.defaultAccessToken = accessToken;

    const authentication = arcgisRest.ApiKeyManager.fromKey(accessToken);

  2. Use arcgisRest.queryFeatures to make an authenticated request to the Trailheads feature service. Set the f property to geojson to format the response as GeoJSON.

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      destination : Cesium.Cartesian3.fromDegrees(-118.705, 33.957, 35000),
      orientation : {
        heading : Cesium.Math.toRadians(0.0),
        pitch : Cesium.Math.toRadians(-70.0),
      }

    });

    const trailheadsURL = "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads/FeatureServer/0";

    arcgisRest.queryFeatures({
        url: trailheadsURL,
        authentication,
        f:"geojson"
    }).then((response) => {

    })

  3. Load the features into your scene using a GeoJsonDataSource

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    const trailheadsURL = "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads/FeatureServer/0";

    arcgisRest.queryFeatures({
        url: trailheadsURL,
        authentication,
        f:"geojson"
    }).then((response) => {

        Cesium.GeoJsonDataSource.load(response,{
            clampToGround:true,
            markerColor: Cesium.Color.fromCssColorString('#5491f5'),

        }).then((data)=>{
            viewer.dataSources.add(data);
        })

    })

  4. Add the data attribution for the feature layer source.

Customize the pop-up

Cesium automatically creates popups for GeoJSON layers using the properties of each feature. You can set the title and description properties of each feature to customize the popup content.

  1. Access the GeoJSON response from arcgisRest.queryFeatures and iterate through each feature. Set the title property of each trailhead to the trail name (TRL_NAME).

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    const trailheadsURL = "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads/FeatureServer/0";

    arcgisRest.queryFeatures({
        url: trailheadsURL,
        authentication,
        f:"geojson"
    }).then((response) => {

        for (let i=0; i<response.features.length; i++) {
            let feature = response.features[i];
            feature.properties.title = feature.properties.TRL_NAME;

        }

        Cesium.GeoJsonDataSource.load(response,{
            clampToGround:true,
            markerColor: Cesium.Color.fromCssColorString('#5491f5'),

            // Attribution text retrieved from https://arcgis.com/home/item.html?id=883cedb8c9fe4524b64d47666ed234a7
            credit: new Cesium.Credit('Los Angeles GeoHub', false)

        }).then((data)=>{
            viewer.dataSources.add(data);
        })

    })

  2. Set the description property of each trailhead to include additional feature attributes.

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        for (let i=0; i<response.features.length; i++) {
            let feature = response.features[i];
            feature.properties.title = feature.properties.TRL_NAME;

            feature.properties.description = `<b>${feature.properties.PARK_NAME}</b><br>
            Zip code: ${feature.properties.ZIP_CODE}<br>
            Elevation: ${feature.properties.ELEV_FT}ft`

        }
Run the app

Run the app.

You should see the trailheads feature layer represented as points in the scene. Click on a trailhead to open a pop-up that displays information about it.

What's next?

Learn how to use additional ArcGIS Location Services in these tutorials:

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