企业建网站哪家好,男女在床上做孔网站,广州智能建站模板,常州交通建设管理有限公司网站对于中国开发者在创建GIS应用的时候#xff0c;往往比较头疼的是底图资源的缺乏。其实国家测绘地信局就提供一个很好的免费资源#xff1a;天地图。使用ArcGIS API的开发人员可以直接利用该资源作为地图应用的底图。 ArcGIS JavaScript API最近新推出了3.18版本。所以下面示例…对于中国开发者在创建GIS应用的时候往往比较头疼的是底图资源的缺乏。其实国家测绘地信局就提供一个很好的免费资源天地图。使用ArcGIS API的开发人员可以直接利用该资源作为地图应用的底图。 ArcGIS JavaScript API最近新推出了3.18版本。所以下面示例代码将基于该版本。 html
headmeta http-equivContent-Type contenttext/html; charsetutf-8 /meta nameviewport contentinitial-scale1, maximum-scale1,user-scalableno /titleTest Map/titlelink relstylesheet hrefhttp://localhost/arcgis_js_api/library/3.18/3.18/dijit/themes/claro/claro.css /link relstylesheet hrefhttp://localhost/arcgis_js_api/library/3.18/3.18/esri/css/esri.css /stylehtml,body,#ui-map-view {margin: 0;padding: 0;width: 100%;height: 100%;}/stylescript srchttp://localhost/arcgis_js_api/library/3.18/3.18/init.js/scriptscript
var myMaprequire([dojo/_base/declare,esri/layers/ArcGISTiledMapServiceLayer,esri/layers/TiledMapServiceLayer,esri/map,esri/layers/TileInfo,esri/layers/LOD,esri/SpatialReference,dojo/domReady!
], function (declare, TileLayer, TiledMapServiceLayer, Map, TileInfo, LOD, SpatialReference) {declare(TDTLayer, TiledMapServiceLayer, {constructor: function () {this.spatialReference new esri.SpatialReference({ wkid: 4490 })this.initialExtent (this.fullExtent new esri.geometry.Extent(-180.0, -90.0, 180.0, 90.0, this.spatialReference))this.tileInfo new esri.layers.TileInfo({rows: 256,cols: 256,compressionQuality: 0,origin: {x: -180,y: 90},spatialReference: {wkid: 4490},lods: [{level: 2, resolution: 0.3515625, scale: 147748796.52937502},{level: 3, resolution: 0.17578125, scale: 73874398.264687508},{level: 4, resolution: 0.087890625, scale: 36937199.132343754},{level: 5, resolution: 0.0439453125, scale: 18468599.566171877},{level: 6, resolution: 0.02197265625, scale: 9234299.7830859385},{level: 7, resolution: 0.010986328125, scale: 4617149.8915429693},{level: 8, resolution: 0.0054931640625, scale: 2308574.9457714846},{level: 9, resolution: 0.00274658203125, scale: 1154287.4728857423},{level: 10, resolution: 0.001373291015625, scale: 577143.73644287116},{level: 11, resolution: 0.0006866455078125, scale: 288571.86822143558},{level: 12, resolution: 0.00034332275390625, scale: 144285.93411071779},{level: 13, resolution: 0.000171661376953125, scale: 72142.967055358895},{level: 14, resolution: 8.58306884765625e-005, scale: 36071.483527679447},{level: 15, resolution: 4.291534423828125e-005, scale: 18035.741763839724},{level: 16, resolution: 2.1457672119140625e-005, scale: 9017.8708819198619},{level: 17, resolution: 1.0728836059570313e-005, scale: 4508.9354409599309},{level: 18, resolution: 5.3644180297851563e-006, scale: 2254.4677204799655}]})this.loaded truethis.onLoad(this)},getTileUrl: function (level, row, col) {return http://t0.tianditu.com/DataServer?Tvec_cX col Y row L level}})myMap new Map(ui-map-view, {center: [111.87, 23.57]})var tdt new TDTLayer()myMap.addLayer(tdt)})/script
/headbody classclarodiv idui-map-view/div
/body/html转载于:https://www.cnblogs.com/luwl/p/5923931.html
