Can I show tooltips of the coordinates where ever i point my mouse on the chart's line?

Question

I had build a Linechart and the problem is I want to show tooltip that can show its coordinate when ever i hover my mouse on the line. Is there a way to do that?

Answer 1

You can use the DataTipFunction of Charts ,The following code shows how to get x and y coordinates.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">
    <mx:Script>
        <![CDATA[
            import mx.charts.HitData;
            import mx.collections.ArrayCollection;
            [Bindable]
            private var arr:ArrayCollection=new ArrayCollection();
            private function init():void
                for(var temp:int=0;temp<30;temp++)
                    arr.addItem({Y:Math.sin(temp)});
            private function dtf(hd:HitData):String
                return "X->"+hd.x+" Y->"+hd.y;
        ]]>
    </mx:Script>
    <mx:LineChart id="lineChart" dataProvider="{arr}" dataTipFunction="dtf" showDataTips="true">
        <mx:series>
            <mx:LineSeries yField="Y" />
        </mx:series>
    </mx:LineChart>
</mx:Application>