Elevation Service

This example demonstrates the use of the ElevationService object. Click on the map to display the elevation at the clicked point. Read the documentation.

TypeScript

function initMap(): void {
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 8,
      center: { lat: 63.333, lng: -150.5 }, // Denali.
      mapTypeId: "terrain",
    }
  );
  const elevator = new google.maps.ElevationService();
  const infowindow = new google.maps.InfoWindow({});
  infowindow.open(map);

  // Add a listener for the click event. Display the elevation for the LatLng of
  // the click inside the infowindow.
  map.addListener("click", (event) => {
    displayLocationElevation(event.latLng, elevator, infowindow);
  });
}

function displayLocationElevation(
  location: google.maps.LatLng,
  elevator: google.maps.ElevationService,
  infowindow: google.maps.InfoWindow
) {
  // Initiate the location request
  elevator.getElevationForLocations(
    {
      locations: [location],
    },
    (results, status) => {
      infowindow.setPosition(location);

      if (status === "OK" && results) {
        // Retrieve the first result
        if (results[0]) {
          // Open the infowindow indicating the elevation at the clicked position.
          infowindow.setContent(
            "The elevation at this point <br>is " +
              results[0].elevation +
              " meters."
          );
        } else {
          infowindow.setContent("No results found");
        }
      } else {
        infowindow.setContent("Elevation service failed due to: " + status);
      }
    }
  );
}

JavaScript

function initMap() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 8,
    center: { lat: 63.333, lng: -150.5 },
    mapTypeId: "terrain",
  });
  const elevator = new google.maps.ElevationService();
  const infowindow = new google.maps.InfoWindow({});
  infowindow.open(map);
  // Add a listener for the click event. Display the elevation for the LatLng of
  // the click inside the infowindow.
  map.addListener("click", (event) => {
    displayLocationElevation(event.latLng, elevator, infowindow);
  });
}

function displayLocationElevation(location, elevator, infowindow) {
  // Initiate the location request
  elevator.getElevationForLocations(
    {
      locations: [location],
    },
    (results, status) => {
      infowindow.setPosition(location);

      if (status === "OK" && results) {
        // Retrieve the first result
        if (results[0]) {
          // Open the infowindow indicating the elevation at the clicked position.
          infowindow.setContent(
            "The elevation at this point <br>is " +
              results[0].elevation +
              " meters."
          );
        } else {
          infowindow.setContent("No results found");
        }
      } else {
        infowindow.setContent("Elevation service failed due to: " + status);
      }
    }
  );
}

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>Elevation Service</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script src="./index.js"></script>
  </head>
  <body>
    <div id="map"></div>

    <!-- Async script executes immediately and must be after any DOM elements used in callback. -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      async
    ></script>
  </body>
</html>

All

<!DOCTYPE html>
<html>
  <head>
    <title>Elevation Service</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></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>
      function initMap() {
        const map = new google.maps.Map(document.getElementById("map"), {
          zoom: 8,
          center: { lat: 63.333, lng: -150.5 },
          mapTypeId: "terrain",
        });
        const elevator = new google.maps.ElevationService();
        const infowindow = new google.maps.InfoWindow({});
        infowindow.open(map);
        // Add a listener for the click event. Display the elevation for the LatLng of
        // the click inside the infowindow.
        map.addListener("click", (event) => {
          displayLocationElevation(event.latLng, elevator, infowindow);
        });
      }

      function displayLocationElevation(location, elevator, infowindow) {
        // Initiate the location request
        elevator.getElevationForLocations(
          {
            locations: [location],
          },
          (results, status) => {
            infowindow.setPosition(location);

            if (status === "OK" && results) {
              // Retrieve the first result
              if (results[0]) {
                // Open the infowindow indicating the elevation at the clicked position.
                infowindow.setContent(
                  "The elevation at this point <br>is " +
                    results[0].elevation +
                    " meters."
                );
              } else {
                infowindow.setContent("No results found");
              }
            } else {
              infowindow.setContent(
                "Elevation service failed due to: " + status
              );
            }
          }
        );
      }
    </script>
  </head>
  <body>
    <div id="map"></div>

    <!-- Async script executes immediately and must be after any DOM elements used in callback. -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      async
    ></script>
  </body>
</html>
function initMap() { const map = new google.maps.Map(document.getElementById("map"), { zoom: 8, center: { lat: 63.333, lng: -150.5 }, mapTypeId: "terrain", }); const elevator = new google.maps.ElevationService(); const infowindow = new google.maps.InfoWindow({}); infowindow.open(map); // Add a listener for the click event. Display the elevation for the LatLng of // the click inside the infowindow. map.addListener("click", (event) => { displayLocationElevation(event.latLng, elevator, infowindow); }); } function displayLocationElevation(location, elevator, infowindow) { // Initiate the location request elevator.getElevationForLocations( { locations: [location], }, (results, status) => { infowindow.setPosition(location); if (status === "OK" && results) { // Retrieve the first result if (results[0]) { // Open the infowindow indicating the elevation at the clicked position. infowindow.setContent( "The elevation at this point <br>is " + results[0].elevation + " meters." ); } else { infowindow.setContent("No results found"); } } else { infowindow.setContent("Elevation service failed due to: " + status); } } ); }
/* 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>Elevation Service</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <!-- jsFiddle will insert css and js --> </head> <body> <div id="map"></div> <!-- Async script executes immediately and must be after any DOM elements used in callback. --> <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&libraries=&v=weekly" async ></script> </body> </html>