Change language labels for static basemap tiles

Learn how to change language labels for static basemap tiles.

Change language labels for static basemap tiles using API key authentication

The static basemap tiles service provides a number of different styles that you can use in your Esri Leaflet applications. Each style accepts a language parameter, which allows you to localize place labels. There are currently more than 5 different languages available.

In this tutorial, you use a <select> dropdown menu to toggle between a number of different language labels for the static basemap tiles.

Prerequisites

An ArcGIS Location Platform 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:

Option 1: Complete the Display a map tutorial; or,
Option 2: Start from the Display a map tutorial .

Set up authentication

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

Create a new API key credential with 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 > Static basemap tiles
When prompted, copy and paste the API key to a safe location. It will be used in the next step.

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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  <script>

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

    const map = L.map("map", {
      minZoom: 2
    })

    map.setView([34.02, -118.805], 13);

    const basemapEnum = "arcgis/streets";

    L.esri.Vector.vectorBasemapLayer(basemapEnum, {
      token: accessToken
    }).addTo(map);

  </script>

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 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
    })

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!

Update script references

The map will use static basemap tiles as its basemap layer. Therefore, you remove references to the esri-leaflet-vector plugin and the vector basemap layer. Then, you reference the staticBasemapTileLayer plugin.

Remove the script references to esri-leaflet-vector plugin.

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<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
  <title>Esri Leaflet Tutorials: Display a map</title>

  <!-- Load Leaflet from CDN -->
  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin="" />
  <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script>

  <!-- Load Esri Leaflet from CDN -->
  <script src="https://unpkg.com/esri-leaflet@3.0.14/dist/esri-leaflet.js"></script>

  <script src="https://unpkg.com/esri-leaflet-vector@4.2.7/dist/esri-leaflet-vector.js"></script>

Remove the basemapEnum and vectorBasemapLayer references.

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    const map = L.map("map", {
      minZoom: 2
    })

    map.setView([34.02, -118.805], 13);

    const basemapEnum = "arcgis/streets";

    L.esri.Vector.vectorBasemapLayer(basemapEnum, {
      token: accessToken
    }).addTo(map);

Add <script> tag to reference the library.

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  <!-- Load Leaflet from CDN -->
  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin="" />
  <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script>

  <!-- Load Esri Leaflet from CDN -->
  <script src="https://unpkg.com/esri-leaflet@3.0.14/dist/esri-leaflet.js"></script>

  <script src="https://unpkg.com/esri-leaflet-static-basemap-tile@1/dist/esri-leaflet-static-basemap-tile.js"></script>
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Update the map's viewpoint

Change the map's center to [47.14, 8.90] and zoom level to 7. This will focus the map on Switzerland.

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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;
    const map = L.map("map", {
      minZoom: 2
    })

    map.setView([47.14, 8.90], 7);

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Add the language labels

You will get all the available languages for your selected basemap style and create a menu that allows users to change the display language of your map.

Create a basemapStyle variable that stores the default basemap style, arcgis/navigation.

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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;
    const map = L.map("map", {
      minZoom: 2
    })

    map.setView([47.14, 8.90], 7);

    const basemapStyle = 'arcgis/navigation';

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Use the getSelf method from L.esri.Static.Util to make a request to the static basemap tiles service that returns all available basemap styles and their metadata.

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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;
    const map = L.map("map", {
      minZoom: 2
    })

    map.setView([47.14, 8.90], 7);

    const basemapStyle = 'arcgis/navigation';

    L.esri.Static.Util.getSelf(accessToken).then((data) => {

    })
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Create a languages object to store all the returned languages available for arcgis/navigation.

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    L.esri.Static.Util.getSelf(accessToken).then((data) => {

      const languages = {};

    })
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Iterate through each language and create an L.esri.Static.staticBasemapTileLayer, passing the language code to the language property. Store it inside the languages object.

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    L.esri.Static.Util.getSelf(accessToken).then((data) => {

      const languages = {};

      data.languages.forEach(language => {
        languages[language.name] = L.esri.Static.staticBasemapTileLayer(basemapStyle, {
          token: accessToken,
          language: language.code
        })
      })

    })
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Create a Layers control that references languages and add it to your map.

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    L.esri.Static.Util.getSelf(accessToken).then((data) => {

      const languages = {};

      data.languages.forEach(language => {
        languages[language.name] = L.esri.Static.staticBasemapTileLayer(basemapStyle, {
          token: accessToken,
          language: language.code
        })
      })

      L.control.layers(languages, null, { collapsed: false }).addTo(map);

    })
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Append addTo to the French entry so that it is the default language when the application loads.

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    L.esri.Static.Util.getSelf(accessToken).then((data) => {

      const languages = {};

      data.languages.forEach(language => {
        languages[language.name] = L.esri.Static.staticBasemapTileLayer(basemapStyle, {
          token: accessToken,
          language: language.code
        })
      })

      L.control.layers(languages, null, { collapsed: false }).addTo(map);

      languages['French'].addTo(map);

    })
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Run the app

Run the app.

The map should be displayed in French and you should be able to use the controls to switch between language labels.

What's next?

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

Change the static basemap tiles style

Change the basemap style in a map using the static basemap tiles service.