arcgis api 4.x加载天地图（经纬度和墨卡托投影）（一篇文章搞透天地图加载）

主要说明：

1、天地图影像分两种经纬度投影（WKID：4490）和墨卡托投影两种，arcgis默认为墨卡托坐标系（3857），可以切换二维/三维，加载经纬度切片时view需要设置wkid:4326

2、1月1日以后使用天地图需要自己申请token，免费申请

3、天地图官网给的各种天地图资源URL地址：

http://lbs./server/MapService.html

ter：地形

img：影像

vec：矢量

cia：影像注记

cva：矢量注记

cta：地形注记

c:经纬度投影

w：web墨卡托投影

矢量底图系列：

天地图影像：

url="/img_c/wmts?SERVICE=WMTS&request=GetTile&version=1.0.0&tk=535cc0eb1&LAYER=img&tileMatrixSet=c&style=default&format=tiles&TileMatrix="+level+"&TileRow="+row+"&TileCol="+col;

影像注记：

"/cia_c/wmts?SERVICE=WMTS&request=GetTile&version=1.0.0&tk=535c46d1&LAYER=cia&tileMatrixSet=c&style=default&format=tiles&TileMatrix="+level+"&TileRow="+row+"&TileCol="+col;

天地图矢量：

"/vec_c/wmts?SERVICE=WMTS&request=GetTile&version=1.0.0&tk=535cc0ebf6d1&LAYER=vec&tileMatrixSet=c&style=default&format=tiles&TileMatrix="+level+"&TileRow="+row+"&TileCol="+col;

矢量注记：

"/cva_c/wmts?SERVICE=WMTS&request=GetTile&version=1.0.0&tk=535cc6d1&LAYER=cva&tileMatrixSet=c&style=default&format=tiles&TileMatrix="+level+"&TileRow="+row+"&TileCol="+col;

备注：url地址中对应修改这几项：img_c表示矢量影像；LAYER=img，表示影像；tileMatrixSet=c：表示是地理坐标系

4、arcgis api加载方式包括两种，WebTileLayer（切片）和WMTSLayer

一、WebTileLayer方式加载墨卡托投影

var map = new Map({// basemap: "streets"});var view = new MapView({container: "viewDiv",map: map,zoom: 9,center: [120, 30]});var tdtMap_img = new WebTileLayer({//天地图影像urlTemplate: "https://{subDomain}./img_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=img&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILECOL={col}&TILEROW={row}&TILEMATRIX={level}&tk=1",subDomains: ["t0","t1","t2","t3","t4","t5","t6","t7"],copyright: "天地图影像"});var tdtMap = new WebTileLayer({//天地图urlTemplate: "http://{subDomain}./vec_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=vec&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILECOL={col}&TILEROW={row}&TILEMATRIX={level}&tk=1072d9",subDomains: ["t0","t1","t2","t3","t4","t5","t6","t7"],copyright: "天地图"})var tdtMap_anno = new WebTileLayer({//天地图注记urlTemplate: "http://{subDomain}./cva_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=vec&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILECOL={col}&TILEROW={row}&TILEMATRIX={level}&tk=107d",urlTemplate: "https://{subDomain}./cva_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=cva&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILECOL={col}&TILEROW={row}&TILEMATRIX={level}&tk=1072d",subDomains: ["t0","t1","t2","t3","t4","t5","t6","t7"],copyright: "天地图注记"})// map.add(tdtMap_img);map.add(tdtMap);map.add(tdtMap_anno);

二、WebTileLayer方式加载经纬度投影

1、修改TileInfo信息。'esri/layers/support/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 }]});

2、加载天地图，需要专门设置map、mapview的wkid为4326才能显示

//加载天地图经纬度矢量var layer = new WebTileLayer('http://{subDomain}./DataServer?T=vec_c&x={col}&y={row}&l={level}&tk=1',{// subDomains: ['t0','t1','t2','t3','t4','t5','t6','t7'],subDomains: ['t0'],tileInfo: tileInfo});//加载天地图经纬度影像var imagelayer = new WebTileLayer('http://{subDomain}./DataServer?T=img_c&X={col}&Y={row}&L={level}&tk=1',{subDomains: ['t0','t1','t2','t3','t4','t5','t6','t7'],//subDomains: ['t0'],tileInfo: tileInfo});//加载天地图经纬度影像注记var zjimagelayer = new WebTileLayer('http://{subDomain}./DataServer?T=cia_c&X={col}&Y={row}&L={level}&tk=17',{subDomains: ['t0','t1','t2','t3','t4','t5','t6','t7'],//subDomains: ['t0'],tileInfo: tileInfo});//加载天地图经纬度地形var terLayer = new WebTileLayer("http://{subDomain}./DataServer?T=ter_c&X={col}&Y={row}&L={level}&tk=1", {subDomains: ['t0'],tileInfo: tileInfo});var map = new Map({spatialReference : {wkid : 4326},basemap: {baseLayers: [imagelayer,zjimagelayer]}});var mapview = new MapView ({container: "viewDiv",map: map,spatialReference : {wkid : 4326},//spatialReference:new SpatialReference({ wkid: 4490 }),// zoom: 12,//center: [ 122.7346125, 25.0563901 ],});