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

    <!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=你申请的tk", {
                    subDomains: ['t0'],
                    tileInfo: tileInfo
                });
                // var tiledLayer2 = new WebTileLayer("http://{subDomain}.tianditu.com/DataServer?T=cva_c&X={col}&Y={row}&L={level}&tk=你申请的tk", {
                //     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>
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  • 原文地址:https://www.cnblogs.com/gistrd/p/9897363.html
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