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）

Love The Way You Lie 2021-07-24 11:55 2916阅读 0赞

**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、2019年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.tianditu.gov.cn/server/MapService.html][http_lbs.tianditu.gov.cn_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="http://t0.tianditu.com/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：

"http://t0.tianditu.com/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：

"http://t0.tianditu.com/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：

"http://t0.tianditu.com/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** ##

## 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}.tianditu.com/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}.tianditu.com/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}.tianditu.com/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}.tianditu.com/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 ],
            });

[http_lbs.tianditu.gov.cn_server_MapService.html]: http://lbs.tianditu.gov.cn/server/MapService.html