Flex API 实现等值线

最新推荐文章于 2021-02-16 12:52:27 发布

SYDBC

最新推荐文章于 2021-02-16 12:52:27 发布

阅读量1.3k

点赞数

分类专栏： Web开发文章标签： ArcGIS esri flex

本文链接：https://blog.youkuaiyun.com/SYDBC/article/details/17380125

版权

Web开发专栏收录该内容

27 篇文章

订阅专栏

本文详细介绍了如何使用Flex框架与GIS服务相结合，开发动态地图应用，重点在于模型调用、事件监听及输出处理。通过实例代码展示了如何实现地图交互功能、模型调用与结果展示。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

模型实现：详见http://www.gisall.com/index.php?uid-124272-action-viewspace-itemid-6086

其中需要注意的地方,中间输出环境变量要用草图工作空间%scratchworkspace%,能拖管的一定要托管.

具体实现代码
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:mx=”library://ns.adobe.com/flex/mx” xmlns:supportClasses=”com.esri.ags.skins.supportClasses.*”minWidth=”955″ minHeight=”600″ xmlns:esri=”http://www.esri.com/2008/ags“>
5.
6.  <fx:Script>
7.
8.    <![CDATA[
9.
10.
11.     import com.esri.ags.FeatureSet;
12.     import com.esri.ags.Graphic;
13.     import com.esri.ags.events.DrawEvent;
14.     import com.esri.ags.events.GeoprocessorEvent;
15.     import com.esri.ags.geometry.MapPoint;
16.     import com.esri.ags.layers.FeatureLayer;
17.     import com.esri.ags.layers.GPResultImageLayer;
18.     import com.esri.ags.symbols.Symbol;
19.     importcom.esri.ags.tasks.supportClasses.ExecuteResult;
20.     importcom.esri.ags.tasks.supportClasses.ParameterValue;
21.
22.     import mx.controls.Alert;
23.     import mx.events.ItemClickEvent;
24.     import mx.rpc.AsyncResponder;
25.     import mx.rpc.events.FaultEvent;
26.
27.     import spark.events.IndexChangeEvent;
28.     protected functiontbb_itemClickHandler(event:ItemClickEvent):void
29.     {
30.
31.      switch (event.index)
32.      {
33.
34.       case 0:{navTool.activate(NavigationTool.PAN , true);break; }
35.       case 1:{navTool.activate(NavigationTool.ZOOM_IN , true); break; }
36.       case 2: {navTool.activate(NavigationTool.ZOOM_OUT, true); break; }
37.       case 3:{navTool.zoomToPrevExtent(); break; }
38.       case 4:{navTool.zoomToNextExtent(); break; }
39.       case 5:{navTool.map.zoomToInitialExtent(); break; }
40.        case 6:{
41.
42.         //添加系列监听对gp模型输出结果进行处理
43.         gp.addEventListener(GeoprocessorEvent.JOB_COMPLETE,gp_JobCompleteHandler);
44.
45.         gp.addEventListener(GeoprocessorEvent.GET_RESULT_DATA_COMPLETE,gp_ResultCompleteHandler);
46.
47.         gp.addEventListener(FaultEvent.FAULT,onGPFault);
48.
49.         gp.submitJob(null);
50.
51.         break;
52.        }
53.
54.      }
55.     }
56.
57.     protected functiongp_JobCompleteHandler(event:GeoprocessorEvent):void
58.     {
59.
60.      //输出output
61.      gp.getResultData(event.jobInfo.jobId,"output");
62.
63.
64.
65.     }
66.     //把返回结果显示到地图上
67.     private functiongp_ResultCompleteHandler(event:GeoprocessorEvent):void
68.
69.     {
70.
71.      var pv : ParameterValue =event.parameterValue;
72.
73.
74.      var fs : FeatureSet = pv.value asFeatureSet;
75.
76.
77.      ruteGraphicsLayer.graphicProvider =fs.features;
78.
79.      Map1.addLayer(ruteGraphicsLayer);
80.
81.
82.
83.     }
84.     //gp执行失败的错误处理
85.     private function onGPFault(fe:FaultEvent):void
86.     {
87.      this.cursorManager.removeBusyCursor();
88.      if (fe.type == "fault"&& fe.fault.name == "Error" && fe.fault.faultString== "Error Executing Task")
89.      {
90.       Alert.show("Oops - noresults. Maybe try a smaller number.");
91.      }
92.      else
93.      {
94.       Alert.show("Unexpected fault:
" + fe.toString());
95.      }
96.     }
97.
98.
99.    ]]>
100.  </fx:Script>
101.  <fx:Declarations>
102.   <esri:SimpleLineSymbol id=”sls”
103.           width=”3″
104.          color=”0x00FF00″/>
105.   <!– 将非可视元素（例如服务、值对象）放在此处 –>
106.   <esri:NavigationTool id=”navTool” map=”{Map1}”/>
107.   <esri:Geoprocessor id=”gp”
108.          concurrency=”last”
109.         showBusyCursor=”true”
110.         utSpatialReference=”{Map1.spatialReference}”
111.          url=”http://192.168.1.201:8399/arcgis/rest/services/idwtool/GPServer/idwtool”/>
112.  </fx:Declarations>
113.
114.  <esri:Map id=”Map1″ zoomSliderVisible=”false” >
115.   <esri:ArcGISDynamicMapServiceLayer url=”http://192.168.1.201:8399/arcgis/rest/services/idw/MapServer“>
116.   </esri:ArcGISDynamicMapServiceLayer>
117.   <esri:GraphicsLayer id=”ruteGraphicsLayer”symbol=”{sls}”>
118.
119.   </esri:GraphicsLayer>
120.  </esri:Map>
121.  <mx:ToggleButtonBar id=”tbb”itemClick=”tbb_itemClickHandler(event)” >
122.   <mx:dataProvider>
123.    <fx:Array>
124.     <fx:String>漫游</fx:String>
125.     <fx:String>拉框放大</fx:String>
126.     <fx:String>拉框缩小</fx:String>
127.     <mx:Button id=”btn1″ label=”前一视图”/>
128.     <mx:Button id=”btn2″ label=”后一视图”/>
129.     <mx:Button id =”btn3″ label=”全图” />
130.     <mx:Button id =”btn4″ label=”等值线” />
131.    </fx:Array>
132.   </mx:dataProvider>
133.  </mx:ToggleButtonBar>
134.
135. </s:Application>