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 thedocumentation.

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.

functioninitMap():void{
constmap=newgoogle.maps.Map(
document.getElementById("map")asHTMLElement,
{
zoom:6,
center:{lat:20.291,lng:153.027},
mapTypeId:"terrain",
}
);

// Define a symbol using SVG path notation, with an opacity of 1.
constlineSymbol={
path:"M0,-10,1",
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.
constline=newgoogle.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,
});
}

declareglobal{
interfaceWindow{
initMap:()=>void;
}
}
window.initMap=initMap;

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.
functioninitMap(){
constmap=newgoogle.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.
constlineSymbol={
path:"M0,-10,1",
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.
constline=newgoogle.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,
});
}

window.initMap=initMap;

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

<html>
<head>
<title>Dashed Line Symbols (Polyline)</title>

<link rel= "stylesheet" type= "text/css" href= "./style.css" />
<script type= "module" src= "./index.js" ></script>
</head>
<body>
<div id= "map" ></div>

<!--
The `defer` attribute causes the script 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. See
https://developers.google.com/maps/documentation/javascript/load-maps-js-api
for more information.
-->
<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 theseinstructionsto install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

gitclone-bsample-overlay-symbol-dashedhttps://github.com/googlemaps/js-samples.git
cdjs-samples
npmi
npmstart

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

gitcheckoutsample-SAMPLE_NAME
npmi
npmstart