Distance Matrix Service

This example demonstrates the use of the DistanceMatrixService object to fetch the distances between a set of locations.

Read the documentation.

TypeScript

function initMap(): void {
  const bounds = new google.maps.LatLngBounds();
  const markersArray: google.maps.Marker[] = [];

  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      center: { lat: 55.53, lng: 9.4 },
      zoom: 10,
    }
  );

  // initialize services
  const geocoder = new google.maps.Geocoder();
  const service = new google.maps.DistanceMatrixService();

  // build request
  const origin1 = { lat: 55.93, lng: -3.118 };
  const origin2 = "Greenwich, England";
  const destinationA = "Stockholm, Sweden";
  const destinationB = { lat: 50.087, lng: 14.421 };

  const request = {
    origins: [origin1, origin2],
    destinations: [destinationA, destinationB],
    travelMode: google.maps.TravelMode.DRIVING,
    unitSystem: google.maps.UnitSystem.METRIC,
    avoidHighways: false,
    avoidTolls: false,
  };

  // put request on page
  (document.getElementById("request") as HTMLDivElement).innerText =
    JSON.stringify(request, null, 2);

  // get distance matrix response
  service.getDistanceMatrix(request).then((response) => {
    // put response
    (document.getElementById("response") as HTMLDivElement).innerText =
      JSON.stringify(response, null, 2);

    // show on map
    const originList = response.originAddresses;
    const destinationList = response.destinationAddresses;

    deleteMarkers(markersArray);

    const showGeocodedAddressOnMap = (asDestination: boolean) => {
      const handler = ({ results }: google.maps.GeocoderResponse) => {
        map.fitBounds(bounds.extend(results[0].geometry.location));
        markersArray.push(
          new google.maps.Marker({
            map,
            position: results[0].geometry.location,
            label: asDestination ? "D" : "O",
          })
        );
      };

      return handler;
    };

    for (let i = 0; i < originList.length; i++) {
      const results = response.rows[i].elements;

      geocoder
        .geocode({ address: originList[i] })
        .then(showGeocodedAddressOnMap(false));

      for (let j = 0; j < results.length; j++) {
        geocoder
          .geocode({ address: destinationList[j] })
          .then(showGeocodedAddressOnMap(true));
      }
    }
  });
}

function deleteMarkers(markersArray: google.maps.Marker[]) {
  for (let i = 0; i < markersArray.length; i++) {
    markersArray[i].setMap(null);
  }

  markersArray = [];
}

declare global {
  interface Window {
    initMap: () => void;
  }
}
window.initMap = initMap;

JavaScript

function initMap() {
  const bounds = new google.maps.LatLngBounds();
  const markersArray = [];
  const map = new google.maps.Map(document.getElementById("map"), {
    center: { lat: 55.53, lng: 9.4 },
    zoom: 10,
  });
  // initialize services
  const geocoder = new google.maps.Geocoder();
  const service = new google.maps.DistanceMatrixService();
  // build request
  const origin1 = { lat: 55.93, lng: -3.118 };
  const origin2 = "Greenwich, England";
  const destinationA = "Stockholm, Sweden";
  const destinationB = { lat: 50.087, lng: 14.421 };
  const request = {
    origins: [origin1, origin2],
    destinations: [destinationA, destinationB],
    travelMode: google.maps.TravelMode.DRIVING,
    unitSystem: google.maps.UnitSystem.METRIC,
    avoidHighways: false,
    avoidTolls: false,
  };

  // put request on page
  document.getElementById("request").innerText = JSON.stringify(
    request,
    null,
    2
  );
  // get distance matrix response
  service.getDistanceMatrix(request).then((response) => {
    // put response
    document.getElementById("response").innerText = JSON.stringify(
      response,
      null,
      2
    );

    // show on map
    const originList = response.originAddresses;
    const destinationList = response.destinationAddresses;

    deleteMarkers(markersArray);

    const showGeocodedAddressOnMap = (asDestination) => {
      const handler = ({ results }) => {
        map.fitBounds(bounds.extend(results[0].geometry.location));
        markersArray.push(
          new google.maps.Marker({
            map,
            position: results[0].geometry.location,
            label: asDestination ? "D" : "O",
          })
        );
      };
      return handler;
    };

    for (let i = 0; i < originList.length; i++) {
      const results = response.rows[i].elements;

      geocoder
        .geocode({ address: originList[i] })
        .then(showGeocodedAddressOnMap(false));

      for (let j = 0; j < results.length; j++) {
        geocoder
          .geocode({ address: destinationList[j] })
          .then(showGeocodedAddressOnMap(true));
      }
    }
  });
}

function deleteMarkers(markersArray) {
  for (let i = 0; i < markersArray.length; i++) {
    markersArray[i].setMap(null);
  }

  markersArray = [];
}

window.initMap = initMap;

CSS

/* Optional: Makes the sample page fill the window. */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

#container {
  height: 100%;
  display: flex;
}

#sidebar {
  flex-basis: 15rem;
  flex-grow: 1;
  padding: 1rem;
  max-width: 30rem;
  height: 100%;
  box-sizing: border-box;
  overflow: auto;
}

#map {
  flex-basis: 0;
  flex-grow: 4;
  height: 100%;
}

#sidebar {
  flex-direction: column;
}

HTML

<html>
  <head>
    <title>Distance Matrix Service</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="container">
      <div id="map"></div>
      <div id="sidebar">
        <h3 style="flex-grow: 0">Request</h3>
        <pre style="flex-grow: 1" id="request"></pre>
        <h3 style="flex-grow: 0">Response</h3>
        <pre style="flex-grow: 1" id="response"></pre>
      </div>
    </div>

    <!-- 
     The `defer` attribute causes the callback to execute after the full HTML
     document has been parsed. For non-blocking uses, avoiding race conditions,
     and consistent behavior across browsers, consider loading using Promises
     with https://www.npmjs.com/package/@googlemaps/js-api-loader.
    -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
      defer
    ></script>
  </body>
</html>

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

  git clone -b sample-distance-matrix https://github.com/googlemaps/js-samples.git
  cd js-samples
  npm i
  npm start

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME.

  git checkout sample-SAMPLE_NAME
  npm i
  npm start