This example uses the data layer to add some custom shapes to a map, and shows how to apply styles to those shapes
Read the documentation.
TypeScript
let map: google.maps.Map; function initMap(): void { map = new google.maps.Map(document.getElementById("map") as HTMLElement, { zoom: 4, center: { lat: -28, lng: 137 }, }); // Load GeoJSON. map.data.loadGeoJson( "https://storage.googleapis.com/mapsdevsite/json/google.json" ); // Set the stroke width, and fill color for each polygon map.data.setStyle({ fillColor: "green", strokeWeight: 1, }); }
JavaScript
let map; function initMap() { map = new google.maps.Map(document.getElementById("map"), { zoom: 4, center: { lat: -28, lng: 137 }, }); // Load GeoJSON. map.data.loadGeoJson( "https://storage.googleapis.com/mapsdevsite/json/google.json" ); // Set the stroke width, and fill color for each polygon map.data.setStyle({ fillColor: "green", strokeWeight: 1, }); }
CSS
/* Always set the map height explicitly to define the size of the div * element that contains the map. */ #map { height: 100%; } /* Optional: Makes the sample page fill the window. */ html, body { height: 100%; margin: 0; padding: 0; }
HTML
<!DOCTYPE html> <html> <head> <title>Data Layer: Styling</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly" defer ></script> <link rel="stylesheet" type="text/css" href="./style.css" /> <script src="./index.js"></script> </head> <body> <div id="map"></div> </body> </html>
All
<!DOCTYPE html> <html> <head> <title>Data Layer: Styling</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly" defer ></script> <style type="text/css"> /* Always set the map height explicitly to define the size of the div * element that contains the map. */ #map { height: 100%; } /* Optional: Makes the sample page fill the window. */ html, body { height: 100%; margin: 0; padding: 0; } </style> <script> let map; function initMap() { map = new google.maps.Map(document.getElementById("map"), { zoom: 4, center: { lat: -28, lng: 137 }, }); // Load GeoJSON. map.data.loadGeoJson( "https://storage.googleapis.com/mapsdevsite/json/google.json" ); // Set the stroke width, and fill color for each polygon map.data.setStyle({ fillColor: "green", strokeWeight: 1, }); } </script> </head> <body> <div id="map"></div> </body> </html>
Create a starter application from sample
A skeleton starter application using TypeScript, Webpack, and Babel can be generated from this sample using one of the methods below.
Run Locally
Node.js is required to run this sample locally. Follow these instructions to install Node.js and NPM.
npx @googlemaps/js-samples init layer-data-style DESTINATION_FOLDER
Run in Google Cloud Shell
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Run in Cloud Shell