Find service areas

Learn how to access the routing service.

Find service areas using API key authentication

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

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.

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

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.

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 location 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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    const authentication = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
       clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
       redirectUri: "YOUR_REDIRECT_URL", // The redirect URL registered in your OAuth credentials
       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_URL", // 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 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.
Call 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_URL", // 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 ArcGIS location services in these tutorials:

Search for an address

Find an address or place by accessing the Geocoding service.

Find place addresses

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

Query a feature layer (SQL)

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