flex 图表使用百分比示例

<?xml version="1.0"?>
<!-- charts/PredefinedAxisStyles.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

<mx:Script>
<!--[CDATA[
//导入相关包
import mx.collections.ArrayCollection;
import mx.charts.*;
import mx.charts.series.items.ColumnSeriesItem;
import mx.charts.ChartItem;
import mx.charts.chartClasses.Series;
import mx.charts.chartClasses.IAxis;
import mx.utils.ObjectUtil;

[Bindable]
public var expenses:ArrayCollection = new ArrayCollection([
{Month:"*", Profit:20, Expenses:15},
{Month:"**", Profit:10, Expenses:20},
{Month:"***", Profit:30, Expenses:40},
{Month:"****", Profit:15, Expenses:25},
{Month:"*****", Profit:40, Expenses:45}
]);



public function myLabelFormat(obj:Object,pcat:Object,ax:LinearAxis):String
{
return numForm.format(obj)+"%";
}

private function setCustomLabel(element:ChartItem, series:Series):String {
// Get a refereence to the current data element.
var data:ColumnSeriesItem = ColumnSeriesItem(element);

// Get a reference to the current series.
var currentSeries:ColumnSeries = ColumnSeries(series);

// Create a return String and format the number.
return numForm.format(data.yNumber) + "%";
}


// This method customizes the values of the axis labels.
// This signature (with 4 arguments) is for a CategoryAxis.
public function defineLabel(
cat:Object,
pcat:Object,
ax:CategoryAxis,
labelItem:Object):String
{
// Show contents of the labelItem:
for (var s:String in labelItem) {
trace(s + ":" + labelItem[s]);
}

// Return the customized categoryField value:
//return cat + "";

return '<font size="35"><font color="#ff0000">' + cat + '</font></font>';
//'<font color="#ff0000">'