Flex实现双轴组合图

1、设计思路

（1）设计一个组合图，该图共用一个数据源

（2）组合图是有柱状图和折线图组合的

（3）柱状图显示的数据是依据左边的竖直轴，折线图的数据依据右边的竖直轴

2、源码如下

DoubleY.mxml：

<?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%">
	<s:layout>
		<s:BasicLayout/>
	</s:layout>
	<fx:Declarations>
		<s:SolidColor id="sc1" color="0x00BFFF" alpha=".3"/>
		<mx:SolidColorStroke id="s1" color="0x00BFFF" weight="2"/>
	</fx:Declarations>
	
	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			
			//组合图数据绑定
			[Bindable]
			private var gridArray:ArrayCollection = new ArrayCollection([
				{quarter:"第一季度",Monday:"78454",Tuesday:"45454",Wednesday:"12012",Thursday:"78441",Friday:"32314",Saturday:"89454",Sunday:"45421",Rate:"23"},
				{quarter:"第二季度",Monday:"56444",Tuesday:"65612",Wednesday:"78454",Thursday:"45124",Friday:"35451",Saturday:"45421",Sunday:"65421",Rate:"47"},
				{quarter:"第三季度",Monday:"51210",Tuesday:"94210",Wednesday:"65643",Thursday:"45011",Friday:"45122",Saturday:"45421",Sunday:"65988",Rate:"13"},
				{quarter:"第四季度",Monday:"61210",Tuesday:"45122",Wednesday:"65323",Thursday:"95110",Friday:"65623",Saturday:"45111",Sunday:"65311",Rate:"17"}
			]);
		]]>
	</fx:Script>
	
	<mx:VBox width="100%" height="100%">
		<mx:ColumnChart id="chart" width="100%" height="90%" showDataTips="true" fontSize="16" dataProvider="{gridArray}">
			<!--设置水平坐标轴-->
			<mx:horizontalAxis>
				<mx:CategoryAxis dataProvider="{}" categoryField="quarter"/>
			</mx:horizontalAxis>
			<!--设置左竖直坐标轴的最大值和最小值-->
			<mx:verticalAxis>
				<mx:LinearAxis minimum="0.00" maximum="100000.00"/>
			</mx:verticalAxis>
			<!--设置左竖直坐标轴的柱形图-->
			<mx:series>
				<mx:ColumnSeries id="column1"  xField="quarter" yField="Monday" displayName="星期一"/>
				<mx:ColumnSeries id="column2"  xField="quarter" yField="Tuesday" displayName="星期二"/>
				<mx:ColumnSeries id="column3"  xField="quarter" yField="Wednesday" displayName="星期三"/>
				<mx:ColumnSeries id="column4"  xField="quarter" yField="Thursday" displayName="星期四"/>
				<mx:ColumnSeries id="column5"  xField="quarter" yField="Friday" displayName="星期六"/>
				<mx:ColumnSeries id="column6"  xField="quarter" yField="Saturday" displayName="星期七"/>
				<mx:ColumnSeries id="column7"  xField="quarter" yField="Sunday" displayName="星期八"/>
			</mx:series>
			<!--设置右竖直坐标轴的最大值和最小值-->
			<mx:secondVerticalAxis>
				<mx:LinearAxis minimum="0.00" maximum="100.00"/>
			</mx:secondVerticalAxis>
			<!--设置右竖直坐标轴的折线-->
			<mx:secondSeries>
				<mx:LineSeries id="line" dataProvider="{gridArray}" xField="quarter" yField="Rate" displayName="比率"/>
			</mx:secondSeries>
		</mx:ColumnChart>
		<!--设置Legend属性-->
		<mx:HBox>
			<s:Label width="25"/>
			<mx:Legend dataProvider="{chart}" fontSize="20" width="100%" height="30" direction="horizontal" horizontalGap="45" verticalGap="45"/>
		</mx:HBox>
		
	</mx:VBox>
</s:Application>

3、显示结果