ArgumentError: Error #1063: the number of parameters for BasicChart/dataFunc () does not match. There should be 2, currently 3.

ArgumentError: Error #1063: the number of parameters for BasicChart/dataFunc () does not match. There should be 2, currently 3.

1. Error description

ArgumentError: Error #1063: the number of parameters for BasicChart/dataFunc () does not match. There should be 2, currently 3. At mx. charts. chartClasses: Series/cachedefavaluvalues () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ Series. as: 1260] at mx. charts. series: LineSeries/updateData () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ series \ LineSeries. as: 1188] at mx. charts. chartClasses: Series/validateData () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ Series. as: 1950] at mx. charts. series: LineSeries/describeData () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ series \ LineSeries. as: 1273] at mx. charts. chartClasses: DataTransform/describeData () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ DataTransform. as: 282] at mx. charts. chartClasses: AxisBase/describeData () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ AxisBase. as: 238] at mx. charts. chartClasses: NumericAxis/get dataDescriptions () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ NumericAxis. as: 1264] at mx. charts. chartClasses: NumericAxis/autoGenerate () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ NumericAxis. as: 1281] at mx. charts. chartClasses: NumericAxis/updateCache () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ NumericAxis. as: 974] at mx. charts. chartClasses: NumericAxis/update () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ NumericAxis. as: 1108] at mx. charts. chartClasses: NumericAxis/getLabelEstimate () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ NumericAxis. as: 833] at mx. charts: AxisRenderer/measureLabels () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ AxisRenderer. as: 2056] at mx. charts: AxisRenderer/calcRotationAndSpacing () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ AxisRenderer. as: 1701] at mx. charts: AxisRenderer/adjustGutters () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ AxisRenderer. as: 1565] at mx. charts. chartClasses: CartesianChart/updateAxisLayout () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ CartesianChart. as: 2182] at mx. charts. chartClasses: CartesianChart/updateDisplayList () [E: \ dev \ 4.0.0 \ frameworks \ projects \ datavisualization \ src \ mx \ charts \ chartClasses \ CartesianChart. as: 1391] at mx. core: UIComponent/validateDisplayList () [E: \ dev \ 4.0.0 \ frameworks \ projects \ framework \ src \ mx \ core \ UIComponent. as: 8531] at mx. managers: LayoutManager/validateDisplayList () [E: \ dev \ 4.0.0 \ frameworks \ projects \ framework \ src \ mx \ managers \ LayoutManager. as: 663] at mx. managers: LayoutManager/doPhasedInstantiation () [E: \ dev \ 4.0.0 \ frameworks \ projects \ framework \ src \ mx \ managers \ LayoutManager. as: 718] at mx. managers: LayoutManager/doPhasedInstantiationCallback () [E: \ dev \ 4.0.0 \ frameworks \ projects \ framework \ src \ mx \ managers \ LayoutManager. as: 1072]

2. Error cause

 
 
  
   
  
  import mx.charts.ChartItem;import mx.charts.chartClasses.Series;import mx.charts.series.items.LineSeriesItem;import mx.collections.ArrayCollection;import mx.events.FlexEvent;import mx.graphics.Stroke;[Bindable]//折线图数据绑定private var lineArray:ArrayCollection = new ArrayCollection([{seasons:"春季",rate:"0.48677"},{seasons:"夏季",rate:"0.122343232"},{seasons:"秋季",rate:"0.5657645"},{seasons:"冬季",rate:"0.67484889"}]);/** * 设置折线图中比率的位数 */public function myDataFunction(series:Series, item:Object, fieldName:String):Object {var temp:Number = item.rate;var number:String = formatter.format(temp);return number;}  public function myFillFunction(item:ChartItem, index:Number):String{var curItem:LineSeriesItem = LineSeriesItem(item);var num:String = formatter.format(curItem.yNumber);return num;}public function myFilterFunction(item:Object):String {var temp:Number = item.rate;var number:String = formatter.format(temp);return number;}public function myDataFunction1(series:Series, item:Object, fieldName:String):Object {if (fieldName == 'yValue')return(formatter.format(item.rate));else if (fieldName == "xValue")return(formatter.format(item.seasons));elsereturn null;}private function dataFunc( series:LineSeries, item : Object ):Object {var df : NumberFormatter = new NumberFormatter();df.precision = "2";df.rounding = "up";return df.format( item.rate);}
  
  
   
  
  
   
    
     
    
    
     
      
       
      
     
    
    
     
      
       
      
     
    
    
     
    
    
     
    
   
   
  
 

3. Solution