Enable data labels on the columns by setting the value of the labelPosition style property to inside
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<!-- charts/BasicDataLabel.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
initialize="setStartLabelLocation()">
<mx:Script>
import mx.collections.ArrayCollection;
[Bindable]
public var expenses:ArrayCollection = new ArrayCollection([
{Month:"Jan", Income:2000, Expenses:1500},
{Month:"Feb", Income:1000, Expenses:200},
{Month:"Mar", Income:1500, Expenses:500}
]);
private function setStartLabelLocation():void {
cs1.setStyle("labelPosition", "inside");
cs2.setStyle("labelPosition", "inside");
}
private function changeLabelLocation():void {
var pos:String = cs1.getStyle("labelPosition");
if (pos == "inside") {
pos = "outside";
} else {
pos = "inside";
}
cs1.setStyle("labelPosition", pos);
cs2.setStyle("labelPosition", pos);
}
</mx:Script>
<mx:Panel title="Column Chart">
<mx:ColumnChart id="myChart" dataProvider="{expenses}"
showDataTips="true">
<mx:horizontalAxis>
<mx:CategoryAxis dataProvider="{expenses}"
categoryField="Month" />
</mx:horizontalAxis>
<mx:verticalAxis>
<mx:LinearAxis minimum="0" maximum="2500" />
</mx:verticalAxis>
<mx:series>
<mx:ColumnSeries id="cs1" xField="Month" yField="Income"
displayName="Income" />
<mx:ColumnSeries id="cs2" xField="Month" yField="Expenses"
displayName="Expenses" />
</mx:series>
</mx:ColumnChart>
<mx:Button id="b1" label="Change Label Location"
click="changeLabelLocation()" />
</mx:Panel>
</mx:Application>
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