Find service areas | ArcGIS REST JS

Learn how to access the ArcGIS Routing service.

A service area, also known as an isochrone, is a polygon that represents the area that can be reached when driving or walking on a street network. The area that can be reached is restricted by either time or distance. To calculate service areas, you can use the Routing service. You provide a start location (facilities), one or more time or distance values, and a spatial reference. Once processed, the service returns the service areas that can be reached.

In this tutorial, you create a area that can be reached from a location within a drive time with the route service.

Prerequisites

You need an ArcGIS Location Platform or ArcGIS Online account.

Steps

Get the starter app

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

Choose API key authentication if you:

Want the easiest way to get started.
Want to build public applications that access ArcGIS Location Services and secure items.
Have an ArcGIS Location Platform or ArcGIS Online account.

Choose user authentication if you:

Want to build private applications.
Require application users to sign in with their own ArcGIS account and access resources their behalf.
Have an ArcGIS Online account.

To learn more about both types of authentication, go to Authentication.

If you are using the CDN libraries, to get started.

Set up authentication

Create a new API key credential with the correct privileges to get an access token.

Go to the Create an API key tutorial and create an API key with the following privilege(s):
- Privileges:
  - Location services > Routing
Copy the API key access token to your clipboard when prompted.

Set developer credentials

Use the API key or OAuth developer credentials so your application can access ArcGIS services.

Update the accessToken variable to use your API key.

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    const accessToken = "YOUR_ACCESS_TOKEN";

In both the index.html and callback.html files, replace YOUR_CLIENT_ID and YOUR_REDIRECT_URL 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 authentication = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
      clientId,
      redirectUri,
      portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
    });

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
    });

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!

Make the request

Copy and paste the code below, following the steps to make a request to the ArcGIS Routing service.

Reference the arcgis-rest-request and arcgis-rest-routing libraries either through CDN, ES Modules, or Node JS.
Define the parameters needed for the request.
Make a request to the Routing service and handle the results.

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    <script>
    // when including ArcGIS REST JS all exports are available from the same arcgisRest global
    /* Use for API key authentication */

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

    // or

    /* Use for user authentication */
    // const authentication = 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: "https://www.arcgis.com/sharing/rest" // Your portal URL
    // })

    arcgisRest
      .serviceArea({
        facilities: [
          [-123.1171, 49.2818] // Vancouver
        ],
        authentication
      })
      .then((response) => {
        console.log(response);
        document.getElementById("result").textContent = JSON.stringify(response, null, 2);
      });

    </script>
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Run the app

Run the app.

The result should look similar to this.

What's next?

Learn how to use additional location services in these tutorials:

Search for an address

Find an address or place by accessing the ArcGIS Geocoding service.

Find place addresses

Find coffee shops, gas stations, restaurants and other nearby places by accessing the ArcGIS Geocoding service.

Query a feature layer (SQL)

Access and query a hosted feature layer with a SQL where clause.