Flex中利用单选按钮切换柱状图横纵坐标以及描述

1、问题描述

      一组单选按钮，有周和月之分，选择“周”，柱状图横坐标显示的是周，纵坐标显示的是人数；选择“月”，柱状图横坐标显示的月，纵坐标显示的是比率。

2、演示实例

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" 
			   width="100%" height="100%" 
			   creationComplete="initHandler(event)"
			   fontFamily="微软雅黑" fontSize="12">
	<s:layout>
		<s:BasicLayout/>
	</s:layout>
	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			import mx.controls.Alert;
			import mx.events.FlexEvent;
			import mx.events.ItemClickEvent;
			
			[Bindable]
			//图的数据绑定
			private var chartArray:ArrayCollection = new ArrayCollection([
				{week:"星期一",month:"一月",person:"8989",rate:"56"},
				{week:"星期二",month:"二月",person:"5675",rate:"43"},
				{week:"星期三",month:"三月",person:"7234",rate:"12"},
				{week:"星期四",month:"四月",person:"3456",rate:"76"},
				{week:"星期五",month:"五月",person:"6355",rate:"49"},
				{week:"星期六",month:"六月",person:"4356",rate:"32"},
				{week:"星期日",month:"七月",person:"9087",rate:"87"}
			]);

			/**
			 * 初始化函数
			 */
			protected function initHandler(event:FlexEvent):void
			{
				
			}

			/**
			 * 查询按钮函数
			 */
			protected function search_clickHandler(event:MouseEvent):void
			{
				
			}

			/**
			 * 单选按钮切换函数
			 */
			protected function radiogroup_itemClickHandler(event:ItemClickEvent):void
			{
				if(event.currentTarget.selectedValue=="周")
				{
					dataX.categoryField = "week";
					dataX.displayName = "周";
					date.xField = "week";
					date.yField = "person";
					date.displayName = "人数";
				}
				else if(event.currentTarget.selectedValue=="月")
				{
					dataX.categoryField = "month";
					dataX.displayName = "月";
					date.xField = "month";
					date.yField = "rate";
					date.displayName = "比率";
				}
			}

		]]>
	</fx:Script>
	<fx:Declarations>
		<s:RadioButtonGroup id="radiogroup" itemClick="radiogroup_itemClickHandler(event)"/>
	</fx:Declarations>
	
	<s:VGroup width="100%" height="100%" paddingBottom="10" paddingLeft="10" paddingRight="20"
			  paddingTop="10" horizontalAlign="center">
		<s:HGroup width="100%" height="30" paddingLeft="10" verticalAlign="middle">
			<s:Label text="日期类型："/>
			<s:Label width="20"/>
			<s:RadioButton label="周" groupName="radiogroup" value="周" selected="true"/>
			<s:Label width="20"/>
			<s:RadioButton label="月" groupName="radiogroup" value="月"/>
			<s:Label width="60"/>
			<s:Button label="查询" id="search" click="search_clickHandler(event)"/>
		</s:HGroup>
		<mx:ColumnChart id="column" dataProvider="{chartArray}" width="100%" height="80%" columnWidthRatio="0.4"
						showDataTips="true">
			<mx:horizontalAxis>
				<mx:CategoryAxis id="dataX" categoryField="week" displayName="周"/>
			</mx:horizontalAxis>
			
			<mx:series>
				<mx:ColumnSeries displayName="人数" id="date" xField="week" yField="person"/>
			</mx:series>
		</mx:ColumnChart>
		<mx:Legend dataProvider="{column}"/>
		
	</s:VGroup>
	
</s:Application>

3、实例结果

（1）初始化时

（2）选择“月”