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Polygon Arrays

This example creates a map with a simple polygon which displays information in response to a click event.

Read the documentation.

TypeScript

// This example creates a simple polygon representing the Bermuda Triangle.
// When the user clicks on the polygon an info window opens, showing
// information about the polygon's coordinates.

let map: google.maps.Map;

let infoWindow: google.maps.InfoWindow;

function initMap(): void {
  map = new google.maps.Map(document.getElementById("map") as HTMLElement, {
    zoom: 5,
    center: { lat: 24.886, lng: -70.268 },
    mapTypeId: "terrain"
  });

  // Define the LatLng coordinates for the polygon.
  const triangleCoords: google.maps.LatLngLiteral[] = [
    { lat: 25.774, lng: -80.19 },
    { lat: 18.466, lng: -66.118 },
    { lat: 32.321, lng: -64.757 }
  ];

  // Construct the polygon.
  const bermudaTriangle = new google.maps.Polygon({
    paths: triangleCoords,
    strokeColor: "#FF0000",
    strokeOpacity: 0.8,
    strokeWeight: 3,
    fillColor: "#FF0000",
    fillOpacity: 0.35
  });
  bermudaTriangle.setMap(map);

  // Add a listener for the click event.
  bermudaTriangle.addListener("click", showArrays);

  infoWindow = new google.maps.InfoWindow();
}

function showArrays(event: any) {
  // Since this polygon has only one path, we can call getPath() to return the
  // MVCArray of LatLngs.
  // @ts-ignore
  const polygon = this as google.maps.Polygon;
  const vertices = polygon.getPath();

  let contentString =
    "<b>Bermuda Triangle polygon</b><br>" +
    "Clicked location: <br>" +
    event.latLng.lat() +
    "," +
    event.latLng.lng() +
    "<br>";

  // Iterate over the vertices.
  for (let i = 0; i < vertices.getLength(); i++) {
    const xy = vertices.getAt(i);
    contentString +=
      "<br>" + "Coordinate " + i + ":<br>" + xy.lat() + "," + xy.lng();
  }

  // Replace the info window's content and position.
  infoWindow.setContent(contentString);
  infoWindow.setPosition(event.latLng);

  infoWindow.open(map);
}

JavaScript

// This example creates a simple polygon representing the Bermuda Triangle.
// When the user clicks on the polygon an info window opens, showing
// information about the polygon's coordinates.
let map;
let infoWindow;

function initMap() {
  map = new google.maps.Map(document.getElementById("map"), {
    zoom: 5,
    center: { lat: 24.886, lng: -70.268 },
    mapTypeId: "terrain"
  });
  // Define the LatLng coordinates for the polygon.
  const triangleCoords = [
    { lat: 25.774, lng: -80.19 },
    { lat: 18.466, lng: -66.118 },
    { lat: 32.321, lng: -64.757 }
  ];
  // Construct the polygon.
  const bermudaTriangle = new google.maps.Polygon({
    paths: triangleCoords,
    strokeColor: "#FF0000",
    strokeOpacity: 0.8,
    strokeWeight: 3,
    fillColor: "#FF0000",
    fillOpacity: 0.35
  });
  bermudaTriangle.setMap(map);
  // Add a listener for the click event.
  bermudaTriangle.addListener("click", showArrays);
  infoWindow = new google.maps.InfoWindow();
}

function showArrays(event) {
  // Since this polygon has only one path, we can call getPath() to return the
  // MVCArray of LatLngs.

  const polygon = this;
  const vertices = polygon.getPath();
  let contentString =
    "<b>Bermuda Triangle polygon</b><br>" +
    "Clicked location: <br>" +
    event.latLng.lat() +
    "," +
    event.latLng.lng() +
    "<br>";

  // Iterate over the vertices.
  for (let i = 0; i < vertices.getLength(); i++) {
    const xy = vertices.getAt(i);
    contentString +=
      "<br>" + "Coordinate " + i + ":<br>" + xy.lat() + "," + xy.lng();
  }
  // Replace the info window's content and position.
  infoWindow.setContent(contentString);
  infoWindow.setPosition(event.latLng);
  infoWindow.open(map);
}

CSS


      

      

        
HTML

        
<!DOCTYPE html>
<html>
  <head>
    <title>Polygon Arrays</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>

      

      

        
All

        
<!DOCTYPE html>
<html>
  <head>
    <title>Polygon Arrays</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 creates a simple polygon representing the Bermuda Triangle.
      // When the user clicks on the polygon an info window opens, showing
      // information about the polygon's coordinates.
      let map;
      let infoWindow;

      function initMap() {
        map = new google.maps.Map(document.getElementById("map"), {
          zoom: 5,
          center: {
            lat: 24.886,
            lng: -70.268
          },
          mapTypeId: "terrain"
        }); // Define the LatLng coordinates for the polygon.

        const triangleCoords = [
          {
            lat: 25.774,
            lng: -80.19
          },
          {
            lat: 18.466,
            lng: -66.118
          },
          {
            lat: 32.321,
            lng: -64.757
          }
        ]; // Construct the polygon.

        const bermudaTriangle = new google.maps.Polygon({
          paths: triangleCoords,
          strokeColor: "#FF0000",
          strokeOpacity: 0.8,
          strokeWeight: 3,
          fillColor: "#FF0000",
          fillOpacity: 0.35
        });
        bermudaTriangle.setMap(map); // Add a listener for the click event.

        bermudaTriangle.addListener("click", showArrays);
        infoWindow = new google.maps.InfoWindow();
      }

      function showArrays(event) {
        // Since this polygon has only one path, we can call getPath() to return the
        // MVCArray of LatLngs.
        const polygon = this;
        const vertices = polygon.getPath();
        let contentString =
          "<b>Bermuda Triangle polygon</b><br>" +
          "Clicked location: <br>" +
          event.latLng.lat() +
          "," +
          event.latLng.lng() +
          "<br>"; // Iterate over the vertices.

        for (let i = 0; i < vertices.getLength(); i++) {
          const xy = vertices.getAt(i);
          contentString +=
            "<br>" + "Coordinate " + i + ":<br>" + xy.lat() + "," + xy.lng();
        } // Replace the info window's content and position.

        infoWindow.setContent(contentString);
        infoWindow.setPosition(event.latLng);
        infoWindow.open(map);
      }
    </script>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>

      

    

    
    
    
"use strict";

// This example creates a simple polygon representing the Bermuda Triangle.
// When the user clicks on the polygon an info window opens, showing
// information about the polygon's coordinates.
let map;
let infoWindow;

function initMap() {
  map = new google.maps.Map(document.getElementById("map"), {
    zoom: 5,
    center: {
      lat: 24.886,
      lng: -70.268
    },
    mapTypeId: "terrain"
  }); // Define the LatLng coordinates for the polygon.

  const triangleCoords = [
    {
      lat: 25.774,
      lng: -80.19
    },
    {
      lat: 18.466,
      lng: -66.118
    },
    {
      lat: 32.321,
      lng: -64.757
    }
  ]; // Construct the polygon.

  const bermudaTriangle = new google.maps.Polygon({
    paths: triangleCoords,
    strokeColor: "#FF0000",
    strokeOpacity: 0.8,
    strokeWeight: 3,
    fillColor: "#FF0000",
    fillOpacity: 0.35
  });
  bermudaTriangle.setMap(map); // Add a listener for the click event.

  bermudaTriangle.addListener("click", showArrays);
  infoWindow = new google.maps.InfoWindow();
}

function showArrays(event) {
  // Since this polygon has only one path, we can call getPath() to return the
  // MVCArray of LatLngs.
  const polygon = this;
  const vertices = polygon.getPath();
  let contentString =
    "<b>Bermuda Triangle polygon</b><br>" +
    "Clicked location: <br>" +
    event.latLng.lat() +
    "," +
    event.latLng.lng() +
    "<br>"; // Iterate over the vertices.

  for (let i = 0; i < vertices.getLength(); i++) {
    const xy = vertices.getAt(i);
    contentString +=
      "<br>" + "Coordinate " + i + ":<br>" + xy.lat() + "," + xy.lng();
  } // Replace the info window's content and position.

  infoWindow.setContent(contentString);
  infoWindow.setPosition(event.latLng);
  infoWindow.open(map);
}

    
/* 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>Polygon Arrays</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCb1xprYSpXd0q_yDsJ1W2UGhfl9_YGKU0&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <!-- jsFiddle will insert css and js -->
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>