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Dashed Line Symbols (Polyline)

This example converts a polyline to a dashed line, by setting the opacity of the polyline to 0, and drawing an opaque symbol at a regular interval on the polyline.

Read the documentation.

TypeScript

// This example converts a polyline to a dashed line, by
// setting the opacity of the polyline to 0, and drawing an opaque symbol
// at a regular interval on the polyline.

function initMap(): void {
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 6,
      center: { lat: 20.291, lng: 153.027 },
      mapTypeId: "terrain"
    }
  );

  // Define a symbol using SVG path notation, with an opacity of 1.
  const lineSymbol = {
    path: "M 0,-1 0,1",
    strokeOpacity: 1,
    scale: 4
  };

  // Create the polyline, passing the symbol in the 'icons' property.
  // Give the line an opacity of 0.
  // Repeat the symbol at intervals of 20 pixels to create the dashed effect.
  const line = new google.maps.Polyline({
    path: [
      { lat: 22.291, lng: 153.027 },
      { lat: 18.291, lng: 153.027 }
    ],
    strokeOpacity: 0,
    icons: [
      {
        icon: lineSymbol,
        offset: "0",
        repeat: "20px"
      }
    ],
    map: map
  });
}

JavaScript

// This example converts a polyline to a dashed line, by
// setting the opacity of the polyline to 0, and drawing an opaque symbol
// at a regular interval on the polyline.
function initMap() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 6,
    center: { lat: 20.291, lng: 153.027 },
    mapTypeId: "terrain"
  });
  // Define a symbol using SVG path notation, with an opacity of 1.
  const lineSymbol = {
    path: "M 0,-1 0,1",
    strokeOpacity: 1,
    scale: 4
  };
  // Create the polyline, passing the symbol in the 'icons' property.
  // Give the line an opacity of 0.
  // Repeat the symbol at intervals of 20 pixels to create the dashed effect.
  const line = new google.maps.Polyline({
    path: [
      { lat: 22.291, lng: 153.027 },
      { lat: 18.291, lng: 153.027 }
    ],
    strokeOpacity: 0,
    icons: [
      {
        icon: lineSymbol,
        offset: "0",
        repeat: "20px"
      }
    ],
    map: map
  });
}

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>Dashed Line Symbols (Polyline)</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>Dashed Line Symbols (Polyline)</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 converts a polyline to a dashed line, by
      // setting the opacity of the polyline to 0, and drawing an opaque symbol
      // at a regular interval on the polyline.
      function initMap() {
        const map = new google.maps.Map(document.getElementById("map"), {
          zoom: 6,
          center: {
            lat: 20.291,
            lng: 153.027
          },
          mapTypeId: "terrain"
        }); // Define a symbol using SVG path notation, with an opacity of 1.

        const lineSymbol = {
          path: "M 0,-1 0,1",
          strokeOpacity: 1,
          scale: 4
        }; // Create the polyline, passing the symbol in the 'icons' property.
        // Give the line an opacity of 0.
        // Repeat the symbol at intervals of 20 pixels to create the dashed effect.

        const line = new google.maps.Polyline({
          path: [
            {
              lat: 22.291,
              lng: 153.027
            },
            {
              lat: 18.291,
              lng: 153.027
            }
          ],
          strokeOpacity: 0,
          icons: [
            {
              icon: lineSymbol,
              offset: "0",
              repeat: "20px"
            }
          ],
          map: map
        });
      }
    </script>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>
"use strict"; // This example converts a polyline to a dashed line, by // setting the opacity of the polyline to 0, and drawing an opaque symbol // at a regular interval on the polyline. function initMap() { const map = new google.maps.Map(document.getElementById("map"), { zoom: 6, center: { lat: 20.291, lng: 153.027 }, mapTypeId: "terrain" }); // Define a symbol using SVG path notation, with an opacity of 1. const lineSymbol = { path: "M 0,-1 0,1", strokeOpacity: 1, scale: 4 }; // Create the polyline, passing the symbol in the 'icons' property. // Give the line an opacity of 0. // Repeat the symbol at intervals of 20 pixels to create the dashed effect. const line = new google.maps.Polyline({ path: [ { lat: 22.291, lng: 153.027 }, { lat: 18.291, lng: 153.027 } ], strokeOpacity: 0, icons: [ { icon: lineSymbol, offset: "0", repeat: "20px" } ], map: 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>Dashed Line Symbols (Polyline)</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>