ArcGIS For Flex学习之Mapping---Add LODs for extra zooming
效果1 放大到1:4500后的效果
1 <?xml version="1.0" encoding="utf-8"?> 2 <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 3 xmlns:s="library://ns.adobe.com/flex/spark" 4 xmlns:esri="http://www.esri.com/2008/ags" 5 pageTitle="Adding LODs to provide more zoom levels"> 6 7 <fx:Script> 8 <![CDATA[ 9 import com.esri.ags.layers.supportClasses.LOD; 10 11 private function addLODs():void 12 { 13 // make sure the resolution makes sense for tile schema of the base layer 14 // both resolution and scale are required fields 15 // About NaN: The lods are automatically sorted based on scale, so setting level isn't necessary. 16 var lods:Array = myMap.lods; 17 lods.push(new LOD(NaN, 0.6, 3000)); 18 lods.push(new LOD(NaN, 0.3, 1500)); 19 lods.push(new LOD(NaN, 0.1, 500)); 20 myMap.lods = lods; 21 } 22 ]]> 23 </fx:Script> 24 25 <s:controlBarContent> 26 <s:RichText width="100%"> 27 Zoom in past 1:4,500 and you'll notice the basemap switching. 28 When zoomed out, ArcGIS Online Street Map is used, but when zoomed in a dynamic service for Louisville, KY will display parcels, landuse, and planning. 29 </s:RichText> 30 </s:controlBarContent> 31 32 <esri:Map id="myMap" load="addLODs()"> 33 <esri:extent> 34 <esri:Extent xmin="-9551990" ymin="4617767" xmax="-9550520" ymax="4618606"> 35 <esri:SpatialReference wkid="102100"/> 36 <!-- same as tiled map service below --> 37 </esri:Extent> 38 </esri:extent> 39 <esri:ArcGISTiledMapServiceLayer maxScale="4500" url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"/> 40 <esri:ArcGISDynamicMapServiceLayer minScale="4500" url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Louisville/LOJIC_LandRecords_Louisville/MapServer"/> 41 </esri:Map> 42 43 </s:Application>
