Decimal Point data for Stacked Column Chart

Question

Hi,
I use a basic version of a Column chart for one of my projects. I use a stacked column chart with 2 data series namely "Expenses" & "Profit".
I use decimal point numbers (with only two or three places after the decimal point) for both series.
When I mouse over the bars of the output for tool tip, I view more numbers after the decimal point for some data.
How to fix the decimal point to only 2 places & what is the reason for this behaviour?
Attached is the sample output (output.gif) showing the above condition for the mentioned data.
-Sen

Answer 1

Create an toolTipShow event handler and use a NumberFormatter to set the precision of the numbers (sample code from LiveDocs):
<?xml version="1.0"?>
<!-- formatters\MainNumberFormatter.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Script>
        <![CDATA[
            // Define variable to hold the number.       
            [Bindable]
            private var bigNumber:Number = 6000000000.65;
        ]]>
    </mx:Script>
    <!-- Declare and define parameters for the NumberFormatter.-->
    <mx:NumberFormatter id="PrepForDisplay"
        precision="0"
        rounding="up"
        decimalSeparatorTo="."
        thousandsSeparatorTo=","
        useThousandsSeparator="true"
        useNegativeSign="true"/>
    <!-- Trigger the formatter while populating a string with data.-->
    <mx:TextInput text="{PrepForDisplay.format(bigNumber)}"/> 
</mx:Application>