How to display a map legend control to toggle layers visualization
This tutorial shows how to display a map legend control to toggle layers visualization.
Copy the following code, paste it into your favorite text editor, and save it as a
YOUR_MAPTILER_API_KEY_HEREwith your actual MapTiler API key.
The next it’s up to you. You can start the map in a different place by modifying the
starting zoom, and you can change the look of the map to any of our styles, or yours, by updating the
style. See what’s available here.
Install the npm package.
Include the CSS file.
If you have a bundler that can handle CSS, you can
importthe CSS or include it with a
<link>in the head of the document via the CDN
<head>of your HTML file. To create the legend we will use the maplibre-gl-legend plugin.
Add event handler for map
loadevent. You will add code to create a vector source and a vector layer in this handler.
Create the list of layers that we want to show in the legend. For each layer we must create a key:value pair where the key is the ID of the layer in the map style and the value is text that is displayed in the legend.
maplibre-gl-legendcontrol to the map.
View complete source code on GitHub
Check out the MapTiler Planet schema to know how it is organized into different thematic layers and which attribute and values each layer contains.