函数加载栅格图

使用TileLayer.getTileUrl属性，通过函数指定栅格图层的取图地址。

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          <!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <title>自定义栅格底图</title>
    <style>
        html,
        body,
        #container {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
        }
    </style>
</head>
<body>
<div id="container"></div>
<script src="https://webapi.amap.com/maps?v=1.4.15&key=您申请的key值"></script>
<script>
    // 高德栅格路况
    var traffic = new AMap.TileLayer({
        'getTileUrl': function (x, y, z) {
            var a = 'https://tm.amap.com/trafficengine/mapabc/traffictile?v=1.0&t=1&zoom=' + (17 - z) + '&x=' + x + '&y=' + y;
            return a;
        },
        'zooms': [6, 20],
        'zIndex': 4
    });

    var map = new AMap.Map('container', {
        resizeEnable: true,
        layers: [
            new AMap.TileLayer.Satellite(),
            new AMap.TileLayer.RoadNet(),
            traffic
        ]
    });

</script>
</body>
</html>
        

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