18 ArcGIS API for JavaScript4.X 系列加载天地图（经纬度）

时间：2019-04-23 14:22:08 阅读：590 评论：0 收藏：0 [点我收藏+]

标签：javascrip pat server amp color title 经纬度 inf reference

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>加载天地图</title>
    <link rel="stylesheet" href="http://localhost/4.10/esri/css/main.css">
    <script src="http://localhost/4.10/init.js"></script>
    <style>
        html,
        body,
        #map {
            width: 100%;
            height: 100%;
            padding: 0;
            margin: 0;
        }
    </style>
    <script>
        require(["esri/Map",
            "esri/views/MapView",
            "esri/layers/WebTileLayer",
            "esri/layers/support/TileInfo",
            "dojo/domReady!"
        ], function (Map, MapView, WebTileLayer, TileInfo) {
            var tileInfo = new TileInfo({
                dpi: 90.71428571427429,//解析度，即像素
                rows: 256,
                cols: 256,
                compressionQuality: 0,//压缩像素值
                origin: {
                    x: -180,
                    y: 90
                },
                spatialReference: {
                    wkid: 4326
                },
                lods: [//定义平铺方案的细节级别数组
                    { level: 2, levelValue: 2, resolution: 0.3515625, scale: 147748796.52937502 },
                    { level: 3, levelValue: 3, resolution: 0.17578125, scale: 73874398.264687508 },
                    { level: 4, levelValue: 4, resolution: 0.087890625, scale: 36937199.132343754 },
                    { level: 5, levelValue: 5, resolution: 0.0439453125, scale: 18468599.566171877 },
                    { level: 6, levelValue: 6, resolution: 0.02197265625, scale: 9234299.7830859385 },
                    { level: 7, levelValue: 7, resolution: 0.010986328125, scale: 4617149.8915429693 },
                    { level: 8, levelValue: 8, resolution: 0.0054931640625, scale: 2308574.9457714846 },
                    { level: 9, levelValue: 9, resolution: 0.00274658203125, scale: 1154287.4728857423 },
                    { level: 10, levelValue: 10, resolution: 0.001373291015625, scale: 577143.73644287116 },
                    { level: 11, levelValue: 11, resolution: 0.0006866455078125, scale: 288571.86822143558 },
                    { level: 12, levelValue: 12, resolution: 0.00034332275390625, scale: 144285.93411071779 },
                    { level: 13, levelValue: 13, resolution: 0.000171661376953125, scale: 72142.967055358895 },
                    { level: 14, levelValue: 14, resolution: 8.58306884765625e-005, scale: 36071.483527679447 },
                    { level: 15, levelValue: 15, resolution: 4.291534423828125e-005, scale: 18035.741763839724 },
                    { level: 16, levelValue: 16, resolution: 2.1457672119140625e-005, scale: 9017.8708819198619 },
                    { level: 17, levelValue: 17, resolution: 1.0728836059570313e-005, scale: 4508.9354409599309 },
                    { level: 18, levelValue: 18, resolution: 5.3644180297851563e-006, scale: 2254.4677204799655 },
                    { level: 19, levelValue: 19, resolution: 2.68220901489257815e-006, scale: 1127.23386023998275 },
                    { level: 20, levelValue: 2, resolution: 1.341104507446289075e-006, scale: 563.616930119991375 }
                ]
            })
            var tiledLayer = new WebTileLayer("http://{subDomain}.tianditu.com/DataServer?T=ter_c&X={col}&Y={row}&L={level}&tk=e378319b5250eff0fdd562f3aa190e62", {
                subDomains: [‘t0‘],
                tileInfo: tileInfo
            });
            // var tiledLayer2 = new WebTileLayer("http://{subDomain}.tianditu.com/DataServer?T=cva_c&X={col}&Y={row}&L={level}&tk=e378319b5250eff0fdd562f3aa190e62", {
            //     subDomains: [‘t0‘],
            //     tileInfo: tileInfo
            // });为什么之前要加两遍？
            var map = new Map({
                spatialReference: {
                    wkid: 4326
                },
                basemap: {
                    baseLayers: [tiledLayer]
                }
            });
            var view = new MapView({
                container: "map",
                spatialReference: {
                    wkid: 4326
                },
                map: map,
                scale: 20000000,
                center: [101, 35]
            });
        })
    </script>
</head>

<body>
    <div id="map"></div>
</body>

</html>

标签：javascrip pat server amp color title 经纬度 inf reference

原文地址：https://www.cnblogs.com/gistrd/p/9897363.html

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