Use chart items in more than one series
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<!-- charts/ComplexFillFunction.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
import mx.graphics.IFill;
import mx.graphics.SolidColor;
import mx.collections.ArrayCollection;
import mx.charts.ChartItem;
import mx.charts.series.items.ColumnSeriesItem;
[Bindable]
public var sales:ArrayCollection = new ArrayCollection([
{ Name:"Reiner", SalesGoal:65000, CurrentAmount:69000 },
{ Name:"Klaus", SalesGoal:40000, CurrentAmount:38000 },
{ Name:"Alan", SalesGoal:40000, CurrentAmount:44000 },
{ Name:"Wolfgang", SalesGoal:48000, CurrentAmount:33000 },
{ Name:"Francis", SalesGoal:22000, CurrentAmount:20000 },
{ Name:"Klaus-Jurgen", SalesGoal:50000, CurrentAmount:55000 },
{ Name:"Martin", SalesGoal:44000, CurrentAmount:70000 },
{ Name:"Mac", SalesGoal:40000, CurrentAmount:35000 },
{ Name:"Friedemann", SalesGoal:38000, CurrentAmount:38000 },
{ Name:"Bruno", SalesGoal:42000, CurrentAmount:40000 }
]);
private function myFillFunction(element:ChartItem, index:Number):IFill
{
var item:ColumnSeriesItem = ColumnSeriesItem(element);
trace("--------------------------------------------------");
trace("Item index: " + index);
trace("Sales Person: " + item.xValue);
trace("Current Amount: " + currSalesSeries.items[index].yValue);
trace("Sales Goal: " + item.yValue);
// Set default color and alpha.
var c:SolidColor = new SolidColor(0x00CC00);
// Use the yNumber properties rather than the yValue properties
// because the conversion to a Number is already done for
// you. As a result, you do not have to cast them to a Number,
// which would be less efficient.
var goal:Number = item.yNumber;
var currentAmount:Number = currSalesSeries.items[index].yNumber;
// Determine if the goal was met or not.
var diff:Number = currentAmount - goal;
if (diff >= 0) {
// Sales person met their goal.
return c;
} else if (diff < 0) {
// Sales person did not meet their goal.
c.color = 0xFF0000;
c.alpha = .2;
}
return c;
}
</mx:Script>
<mx:Panel title="Using a custom fillFunction in a Column Chart">
<mx:ColumnChart id="myChart" dataProvider="{sales}" type="overlaid"
showDataTips="true">
<mx:horizontalAxis>
<mx:CategoryAxis title="Sales Person" categoryField="Name" />
</mx:horizontalAxis>
<mx:verticalAxis>
<mx:LinearAxis title="Sales (in $USD)" />
</mx:verticalAxis>
<mx:series>
<mx:ColumnSeries id="currSalesSeries" xField="Name"
yField="CurrentAmount" displayName="Current Sales">
<mx:fill>
<mx:SolidColor color="0x00FF00" />
</mx:fill>
</mx:ColumnSeries>
<mx:ColumnSeries id="salesGoalSeries" xField="Name"
yField="SalesGoal" fillFunction="myFillFunction"
displayName="Sales Goal">
</mx:ColumnSeries>
</mx:series>
</mx:ColumnChart>
<mx:Legend>
<mx:LegendItem label="Goal" fontWeight="bold">
<mx:fill>
<mx:SolidColor color="0x00CC00" />
</mx:fill>
<mx:stroke>
<mx:Stroke color="0x000000" weight="1" />
</mx:stroke>
</mx:LegendItem>
<mx:LegendItem label="Exceeded Goal" fontWeight="bold">
<mx:fill>
<mx:SolidColor color="0x00FF00" />
</mx:fill>
<mx:stroke>
<mx:Stroke color="0x000000" weight="1" />
</mx:stroke>
</mx:LegendItem>
<mx:LegendItem label="Missed Goal" fontWeight="bold">
<mx:fill>
<mx:SolidColor color="0xFF0000" alpha=".2" />
</mx:fill>
<mx:stroke>
<mx:Stroke color="0x000000" weight="1" />
</mx:stroke>
</mx:LegendItem>
</mx:Legend>
</mx:Panel>
</mx:Application>
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