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.

```// 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() {
var 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.
var 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.
path: [{lat: 22.291, lng: 153.027}, {lat: 18.291, lng: 153.027}],
strokeOpacity: 0,
icons: [{
icon: lineSymbol,
offset: '0',
repeat: '20px'
}],
map: map
});
}```
`<div id="map"></div>`
```/* 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;
}```
```<!-- Replace the value of the key parameter with your own API key. -->
<script async defer
</script>```

Try it yourself

You can experiment with this code in JSFiddle by clicking the `<>` icon in the top-right corner of the code window.

```<!DOCTYPE html>
<html>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Dashed Line Symbols (Polyline)</title>
<style>
/* 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;
}
</style>
<body>
<div id="map"></div>
<script>
// 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() {
var 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.
var 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.
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>
<script async defer