ArcGIS API for javascript-measurement, ranging problem

First measurement

  var map, toolbar, Geometryservice;      function init () {             map=new ESRI. Map ("Map", {          extent:new esri.geometry.Extent ({xmin:110,ymin:31, xmax:117, ymax:37,spatialreference:{wkid:4326} })     ;//Selected spatial coordinate system range         Dojo.connect (map, "OnLoad", Inittoolbar);               Map.addlayer (New Esri.layers.ArcGISTiledMapServiceLayer ("url"),             } function Inittoolbar (map) {               toolbar = new Esri.toolbars.Draw (map);                 Add toolbar after completion of the event listener call    domeasure        dojo.connect (toolbar, "Ondrawend", domeasure);        Instantiate Geometryservice, Geometryserver         var geomrtryserver = "Url2" issued by AGS;        Geometryservice = new Esri.tasks.GeometryService (geomrtryserver);       }

　　

Measurement function measutrelength () {      toolbar.activate (Esri.toolbars.Draw.POLYLINE);      }  function Measutrearea () {toolbar.activate (Esri.toolbars.Draw.POLYGON);}

　

Acreage function domeasure (geometry) {//More type setting display style Measuregeometry = geometry;      Toolbar.deactivate (); Switch (geometry.type) {case "polyline": var symbol = new Esri.symbol.SimpleLineSymbol (Esri.symbol. Simplelinesymbol.style_solid, New Dojo.              Color ([0, 0, 0]), 2);          Break Case "polygon": var symbol = new Esri.symbol.SimpleFillSymbol (Esri.symbol.SimpleFillSymbol.STYLE_NONE, new ES Ri.symbol.SimpleLineSymbol (Esri.symbol.SimpleLineSymbol.STYLE_DASHDOT, New dojo. Color ([255, 0, 0]), 2), New dojo.              Color ([255, 255, 0, 0.25]));      Break }//Set style var graphic = new Esri.      Graphic (Geometry,symbol);      Clears the last Paint content map.graphics.clear ();      Map.graphics.add (graphic);  The projection transformation is done and the Projectcomplete measuregeometry (geometry) is called after completion;  The method function Measuregeometry (geometry) {//If the lengths distance is measured for the line type if (Geometry.type = = "Polyline") is called when the projection conversion is complete {var lengthparams = new Esri.tasKs.          Lengthsparameters ();          Lengthparams.polylines = [geometry];          Lengthparams.lengthunit = Esri.tasks.GeometryService.UNIT_METER;          Lengthparams.geodesic = true; Lengthparams.polylines[0].spatialreference = new ESRI.          Spatialreference (4326);          Geometryservice.lengths (Lengthparams);      Dojo.connect (Geometryservice, "Onlengthscomplete", outputdistance); }//If the simplify operation is required for the polygon type to be measured in area, else if (Geometry.type = = "Polygon") {var areasandlengthparams = new          Esri.tasks.AreasAndLengthsParameters ();          Areasandlengthparams.lengthunit = Esri.tasks.GeometryService.UNIT_METER;          Areasandlengthparams.areaunit = Esri.tasks.GeometryService.UNIT_SQUARE_METERS; THIS.OUTSR = new ESRI.          Spatialreference ({wkid:102113}); Geometryservice.project ([Geometry], THIS.OUTSR, function (geometry) {geometryservice.simplify (Geometry, func tion (simplifiedgeometries) {Areasandlengthparams.poLygons = simplifiedgeometries; Areasandlengthparams.polygons[0].spatialreference = new ESRI.                  Spatialreference (102113);              Geometryservice.areasandlengths (Areasandlengthparams);          });          });      Dojo.connect (Geometryservice, "Onareasandlengthscomplete", outputareaandlength); }}//display measurement distance function outputdistance (result) {var CurX = Measuregeometry.paths[0][measuregeometry.paths[0].leng      TH-1][0];      var CurY = measuregeometry.paths[0][measuregeometry.paths[0].length-1][1];      var curpos = new Esri.geometry.Point (CurX, CurY, map.spatialreference);      Map.infoWindow.setTitle ("Distance Measurement");      Map.infoWindow.setContent ("Measurement length: <strong>" + parseint (String (result.lengths[0)) + "M </strong>");  Map.infoWindow.show (CurPos); }//Display measurement area function outputareaandlength (result) {var CurX = (Measuregeometry._extent.xmax + measuregeometry._ext      Ent.xmin)/2; var CurY = (measuregeometry._extent. Ymax + measuregeometry._extent.ymin)/2 var curpos = new Esri.geometry.Point (CurX, CurY, map.spatialreference);      Map.infoWindow.setTitle ("area measurement"); Map.infoWindow.setContent ("area: <strong>" + parseint (String (result.areas[0)) + "Square </strong> perimeter:" +      parseint (String (Result.lengths[0])) + "M");      Map.infoWindow.show (CurPos);  Alert ("area:" + Dojo.number.format (Result.areas[0]) + "square" + "Length:" + Dojo.number.format (Result.lengths[0]) + "M");   }

　　

　

ArcGIS API for javascript-measurement, ranging problem