Display a map

Learn how to use MapLibre GL JS to display a map.

Display a map using API key authentication

You can display a map in MapLibre GL JS by using a vector tile basemap layer from the basemap styles service. A vector tile basemap layer is a MapLibre GL style containing a source, layers, font glyphs, and icons to render the layers.

In this tutorial, you display a map of the Santa Monica Mountains using the streets basemap layer from the Basemap styles service.

This tutorial is the starting point for the other MapLibre tutorials.

Prerequisites

An ArcGIS Location Platform or ArcGIS Online account.

Steps

Create a new app

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

Create a new CodePen app with a map div that is the full width and height of the browser window.

Go to CodePen and create a new pen for your application.

In CodePen > HTML, add HTML and CSS to create a page with a div element called map.

Use the HTML to create a page with a map. Use the map div to display the map. Use the CSS to make the map full width and height.

The <!DOCTYPE html> tag is not required in CodePen. If you are using a different editor or running the page on a local server, be sure to add this tag to the top of your HTML page.

Use dark colors for code blocks
<!DOCTYPE html>
<html>

<head>

  <meta charset="utf-8" />
  <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
  <title>MapLibre GL JS Tutorials: Display a map</title>
  <style>
    html,
    body,
    #map {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
      font-family: Arial, Helvetica, sans-serif;
      font-size: 14px;
      color: #323232;
    }
  </style>

</head>


<body>
  <div id="map"></div>

</body>


</html>

Create a new app by downloading the user authentication starter app and add a map div that is the full width and height of the browser window.

Download the user authentication starter app.
Unzip the folder and open it in a text editor of your choice, such as Visual Studio Code. The starter app includes the following:
- callback.html: This contains callback as part of the authentication process.
- index.html: This contains app logic and the OAuth 2.0 code necessary to perform the authentication.

In the index.html, add a div element called map.

Use dark colors for code blocks
  <body>

    <div id="map"></div>

Apply CSS styling to the map div.

Use dark colors for code blocks
      html,
      body,

      #map {
        padding: 0;
        margin: 0;
        height: 100%;
        width: 100%;
        font-family: Arial, Helvetica, sans-serif;
        font-size: 14px;
        color: #323232;
      }

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 > Basemaps
Copy the API key access token to your clipboard when prompted.

Set developer credentials

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

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.

Expand
Use dark colors for code blocks
  <script>

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

  </script>
Expand

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
Use dark colors for code blocks
    /* Use for user authentication */
    const session = 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
Use dark colors for code blocks
    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!

Add script references

In the index.html file, add the following <link> and <script> references if they are missing.

Use dark colors for code blocks
  <meta charset="utf-8" />
  <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
  <title>MapLibre GL JS Tutorials: Display a map</title>
  <style>
    html,
    body,
    #map {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
      font-family: Arial, Helvetica, sans-serif;
      font-size: 14px;
      color: #323232;
    }
  </style>

  <script src=https://unpkg.com/maplibre-gl@4/dist/maplibre-gl.js></script>
  <link href=https://unpkg.com/maplibre-gl@4/dist/maplibre-gl.css rel="stylesheet" />

Create a map

Use a Map to add a map to your div with the basemap you specify.

The Map class uses the map HTML element to display the contents of the map and to provide a user interface to interact with. It supports clicking, zooming, panning, rotating, and tilting the perspective of the map. It also allows you to interact with and discover information about the map data such as finding features where the mouse is clicked. You can also use it to modify the data displayed, by adding new sources or changing layer properties.

For more information, see the MapLibre GL JS documentation.

Create a basemapEnum variable to store the basemap identifier, arcgis/streets.

Expand
Use dark colors for code blocks
  <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_URL", // The redirect URL registered in your OAuth credentials
    //   portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
    // })

    // const accessToken = session.token;

    const basemapEnum = "arcgis/streets";

  </script>
Expand

Create a Map with options to control its display and behavior. Set the container property to the map id of the div you created. The style property references the location of the basemap styles service and contains the basemap identifier and your API key.

Expand
Use dark colors for code blocks
  <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_URL", // The redirect URL registered in your OAuth credentials
    //   portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
    // })

    // const accessToken = session.token;

    const basemapEnum = "arcgis/streets";

    const map = new maplibregl.Map({
      container: "map", // the id of the div element
      style: `https://basemapstyles-api.arcgis.com/arcgis/rest/services/styles/v2/styles/${basemapEnum}?token=${accessToken}`,
      zoom: 12, // starting zoom
      center: [-118.805, 34.027] // starting location [longitude, latitude]
    });

  </script>
Expand

Add attribution

You need to display Esri and data attribution in all applications that use Esri technology. MapLibre GL JS displays data attribution automatically for the basemap styles service, however, you need to take additional steps to display Esri attribution ("Powered by Esri").

Use the customAttribution option to include the Powered by Esri string in the map's attribution control.

Expand
Use dark colors for code blocks
  <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_URL", // The redirect URL registered in your OAuth credentials
    //   portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
    // })

    // const accessToken = session.token;

    const basemapEnum = "arcgis/streets";

    const map = new maplibregl.Map({
      container: "map", // the id of the div element
      style: `https://basemapstyles-api.arcgis.com/arcgis/rest/services/styles/v2/styles/${basemapEnum}?token=${accessToken}`,
      zoom: 12, // starting zoom
      center: [-118.805, 34.027] // starting location [longitude, latitude]
    });

    // Add Esri attribution
    // Learn more in https://esriurl.com/attribution
    map._controls[0].options.customAttribution += " | Powered by Esri "
    map._controls[0]._updateAttributions()

  </script>
Expand