<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/11/07/rotating-a-flex-piechart-control-when-a-user-clicks-on-an-item/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Script>
        <![CDATA[
        	import mx.charts.series.items.PieSeriesItem;
        	import mx.charts.events.ChartItemEvent;

            private function pieChart_itemClick(evt:ChartItemEvent):void {
            	var item:PieSeriesItem = evt.hitData.chartItem as PieSeriesItem;
            	var degrees:Number = radiansToDegrees(item.startAngle);
            	var arr:Array = [];
            	if (checkBox.selected) {
	            	arr[item.index] = 0.2;
	            }
	            pieSeries.perWedgeExplodeRadius = arr;
            	pieSeries.startAngle -= degrees;
            }

            private function radiansToDegrees(radians:Number):Number {
            	return radians * (180 / Math.PI);
            }
        ]]>
    </mx:Script>

    <mx:XML id="dp">
        <products>
            <product label="Product 1" data="3" />
            <product label="Product 2" data="1" />
            <product label="Product 3" data="4" />
            <product label="Product 4" data="1" />
            <product label="Product 5" data="5" />
            <product label="Product 6" data="9" />
        </products>
    </mx:XML>

    <mx:ApplicationControlBar dock="true">
    	<mx:CheckBox id="checkBox"
    			label="Use perWedgeExplodeRadius:"
    			labelPlacement="left"
    			selected="true" />
    </mx:ApplicationControlBar>

    <mx:PieChart id="pieChart"
            dataProvider="{dp.product}"
            itemClick="pieChart_itemClick(event);"
            height="100%"
            width="100%">
        <mx:series>
            <mx:PieSeries id="pieSeries"
            		field="@data"
            		labelPosition="callout">
                <mx:stroke>
                    <mx:Stroke color="black" weight="0" />
                </mx:stroke>
                <mx:filters>
                    <mx:Array />
                </mx:filters>
            </mx:PieSeries>
        </mx:series>
    </mx:PieChart>

</mx:Application>

