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<!DOCTYPE html>
<html>
<head>
<title>Add Arrow along a Path - Azure Maps Web SDK Samples</title>
<meta charset="utf-8" />
<meta http-equiv="x-ua-compatible" content="IE=Edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="This sample shows how to add arrow icons along a line on the map. " />
<meta name="keywords" content="map, gis, API, SDK, linestring, arrows, path, symbols, linelayer" />
<meta name="author" content="Microsoft Azure Maps" />
<!-- Add references to the Azure Maps Map control JavaScript and CSS files. -->
<link rel="stylesheet" href="https://atlas.microsoft.com/sdk/javascript/mapcontrol/2/atlas.min.css" type="text/css" />
<script src="https://atlas.microsoft.com/sdk/javascript/mapcontrol/2/atlas.min.js"></script>
<script type='text/javascript'>
var map, datasource;
function GetMap() {
//Initialize a map instance.
map = new atlas.Map('myMap', {
center: [-122.135, 47.65],
zoom: 12,
view: 'Auto',
//Add your Azure Maps subscription key to the map SDK. Get an Azure Maps key at https://azure.com/maps
authOptions: {
authType: 'subscriptionKey',
subscriptionKey: '<Your Azure Maps Key>'
}
});
//Wait until the map resources are ready.
map.events.add('ready', function () {
//Load the custom image icon into the map resources.
map.imageSprite.add('arrow-icon', '../Common/images/icons/purpleArrowRight.png').then(function () {
//Create a data source to add your data to.
datasource = new atlas.source.DataSource();
map.sources.add(datasource);
//Create a line and add it to the data source.
datasource.add(new atlas.data.Feature(new atlas.data.LineString([
[-122.18822, 47.63208],
[-122.18204, 47.63196],
[-122.17243, 47.62976],
[-122.16419, 47.63023],
[-122.15852, 47.62942],
[-122.15183, 47.62988],
[-122.14256, 47.63451],
[-122.13483, 47.64041],
[-122.13466, 47.64422],
[-122.13844, 47.65440],
[-122.13277, 47.66515],
[-122.12779, 47.66712],
[-122.11595, 47.66712],
[-122.11063, 47.66735],
[-122.10668, 47.67035],
[-122.10565, 47.67498]
])));
//Add a layers for rendering data.
map.layers.add([
//Add a line layer for displaying the line.
new atlas.layer.LineLayer(datasource, null, {
strokeColor: 'DarkOrchid',
strokeWidth: 3
}),
//Add a symbol layer for rendering the arrow along the line.
new atlas.layer.SymbolLayer(datasource, null, {
lineSpacing: 100,
placement: 'line',
iconOptions: {
image: 'arrow-icon',
allowOverlap: true,
anchor: 'center',
size: 0.6
}
})
]);
});
});
}
</script>
</head>
<body onload="GetMap()">
<div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;"></div>
<fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
<legend>Add Arrow along a Path</legend>
This sample shows how to add arrow icons along a line on the map.
When using a symbol layer, set the "placement" option to "line", this will render the symbols along the line and rotate the icons (0 degrees = right).
</fieldset>
</body>
</html>
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