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# Data Layer: Polygon

This example uses the Data layer to create a polygon with two internal holes. If you don't use the data layer to create an inner hole, you must define a path wound in the opposite direction to the outer path as shown in this alternative.

Read the documentation.

### TypeScript

```// This example uses the Google Maps JavaScript API's Data layer
// to create a rectangular polygon with 2 holes in it.

function initMap(): void {
const map = new google.maps.Map(
document.getElementById("map") as HTMLElement,
{
zoom: 6,
center: { lat: -33.872, lng: 151.252 }
}
);

// Define the LatLng coordinates for the outer path.
const outerCoords = [
{ lat: -32.364, lng: 153.207 }, // north west
{ lat: -35.364, lng: 153.207 }, // south west
{ lat: -35.364, lng: 158.207 }, // south east
{ lat: -32.364, lng: 158.207 } // north east
];

// Define the LatLng coordinates for an inner path.
const innerCoords1 = [
{ lat: -33.364, lng: 154.207 },
{ lat: -34.364, lng: 154.207 },
{ lat: -34.364, lng: 155.207 },
{ lat: -33.364, lng: 155.207 }
];

// Define the LatLng coordinates for another inner path.
const innerCoords2 = [
{ lat: -33.364, lng: 156.207 },
{ lat: -34.364, lng: 156.207 },
{ lat: -34.364, lng: 157.207 },
{ lat: -33.364, lng: 157.207 }
];

map.data.add({
geometry: new google.maps.Data.Polygon([
outerCoords,
innerCoords1,
innerCoords2
])
});
}index.ts```

### JavaScript

```// This example uses the Google Maps JavaScript API's Data layer
// to create a rectangular polygon with 2 holes in it.
function initMap() {
const map = new google.maps.Map(document.getElementById("map"), {
zoom: 6,
center: { lat: -33.872, lng: 151.252 }
});
// Define the LatLng coordinates for the outer path.
const outerCoords = [
{ lat: -32.364, lng: 153.207 },
{ lat: -35.364, lng: 153.207 },
{ lat: -35.364, lng: 158.207 },
{ lat: -32.364, lng: 158.207 } // north east
];
// Define the LatLng coordinates for an inner path.
const innerCoords1 = [
{ lat: -33.364, lng: 154.207 },
{ lat: -34.364, lng: 154.207 },
{ lat: -34.364, lng: 155.207 },
{ lat: -33.364, lng: 155.207 }
];
// Define the LatLng coordinates for another inner path.
const innerCoords2 = [
{ lat: -33.364, lng: 156.207 },
{ lat: -34.364, lng: 156.207 },
{ lat: -34.364, lng: 157.207 },
{ lat: -33.364, lng: 157.207 }
];
map.data.add({
geometry: new google.maps.Data.Polygon([
outerCoords,
innerCoords1,
innerCoords2
])
});
}
index.js```

### 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.css```

### HTML

```<!DOCTYPE html>
<html>
<head>
<title>Data Layer: Polygon</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="./app.js"></script>
</head>
<body>
<div id="map"></div>
</body>
</html>sample.html```

### All

```<!DOCTYPE html>
<html>
<head>
<title>Data Layer: Polygon</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>
"use strict";

// This example uses the Google Maps JavaScript API's Data layer
// to create a rectangular polygon with 2 holes in it.
function initMap() {
const map = new google.maps.Map(document.getElementById("map"), {
zoom: 6,
center: {
lat: -33.872,
lng: 151.252
}
}); // Define the LatLng coordinates for the outer path.

const outerCoords = [
{
lat: -32.364,
lng: 153.207
},
{
lat: -35.364,
lng: 153.207
},
{
lat: -35.364,
lng: 158.207
},
{
lat: -32.364,
lng: 158.207
} // north east
]; // Define the LatLng coordinates for an inner path.

const innerCoords1 = [
{
lat: -33.364,
lng: 154.207
},
{
lat: -34.364,
lng: 154.207
},
{
lat: -34.364,
lng: 155.207
},
{
lat: -33.364,
lng: 155.207
}
]; // Define the LatLng coordinates for another inner path.

const innerCoords2 = [
{
lat: -33.364,
lng: 156.207
},
{
lat: -34.364,
lng: 156.207
},
{
lat: -34.364,
lng: 157.207
},
{
lat: -33.364,
lng: 157.207
}
];
map.data.add({
geometry: new google.maps.Data.Polygon([
outerCoords,
innerCoords1,
innerCoords2
])
});
}
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>
inline.html```
"use strict"; // This example uses the Google Maps JavaScript API's Data layer // to create a rectangular polygon with 2 holes in it. function initMap() { const map = new google.maps.Map(document.getElementById("map"), { zoom: 6, center: { lat: -33.872, lng: 151.252 } }); // Define the LatLng coordinates for the outer path. const outerCoords = [ { lat: -32.364, lng: 153.207 }, { lat: -35.364, lng: 153.207 }, { lat: -35.364, lng: 158.207 }, { lat: -32.364, lng: 158.207 } // north east ]; // Define the LatLng coordinates for an inner path. const innerCoords1 = [ { lat: -33.364, lng: 154.207 }, { lat: -34.364, lng: 154.207 }, { lat: -34.364, lng: 155.207 }, { lat: -33.364, lng: 155.207 } ]; // Define the LatLng coordinates for another inner path. const innerCoords2 = [ { lat: -33.364, lng: 156.207 }, { lat: -34.364, lng: 156.207 }, { lat: -34.364, lng: 157.207 }, { lat: -33.364, lng: 157.207 } ]; map.data.add({ geometry: new google.maps.Data.Polygon([ outerCoords, innerCoords1, innerCoords2 ]) }); }
/* 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; }
<!DOCTYPE html> <html> <head> <title>Data Layer: Polygon</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE&callback=initMap&libraries=&v=weekly" defer ></script> <!-- jsFiddle will insert css and js --> </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.

````npm i -g '@googlemaps/js-samples'`
`googlemaps-js-samples init layer-data-polygon DESTINATION_FOLDER`
```

### Run in Google Cloud Shell

Google Cloud Shell is an interactive shell environment for Google Cloud Platform that makes it easy for you to learn and experiment with GCP and manage your projects and resources from your web browser.