Find service areas

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 account to access the developer dashboard and create an API key.

Steps

Create a new pen

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

Get an API Key

To access location services, you need an API key or OAuth 2.0 access token.

  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.

Make the request

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

  1. Reference the ArcGIS REST JS libraries either through CDN, ES Modules, or Node JS.

  2. Set the apiKey with the API key from your dashboard.

  3. Define the parameters needed for the request.

  4. Call the Routing service and handle the results.

CDNES ModulesNode JS
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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>ArcGIS REST JS</title>
  <style>
    body {
      font-family: monospace;
      color: white;
      overflow: auto;
      padding: 1rem;
    body,pre{
      background: #000000;
  </style>
</head>
<body>
  <pre id="result"></pre>

  <!-- require ArcGIS REST JS libraries from https://unpkg.com -->
  <script src="https://unpkg.com/@esri/arcgis-rest-request@3.0.0/dist/umd/request.umd.js"></script>
  <script src="https://unpkg.com/@esri/arcgis-rest-auth@3.0.0/dist/umd/auth.umd.js"></script>
  <script src="https://unpkg.com/@esri/arcgis-rest-routing@3.0.0/dist/umd/routing.umd.js"></script>
  <script>
    /* when including ArcGIS REST JS all exports are available
    from the same arcgisRest global */

    const apiKey = "YOUR_API_KEY";

    const authentication = new arcgisRest.ApiKey({
      key: apiKey
    });

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

  </script>

</body>
</html>

Result

The request will return the following :

What's next?

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

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