Compare yField in data provider when it fills each chart item : Column Chart Data « Chart « Flex

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3. Column Chart Data

Compare yField in data provider when it fills each chart item

           
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<!-- charts/SimpleFillFunction.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", CurrentAmount:69000 },
            { Name:"Klaus", CurrentAmount:38000 },
            { Name:"Alan", CurrentAmount:44000 },
            { Name:"Wolfgang", CurrentAmount:33000 },
            { Name:"Francis", CurrentAmount:20000 },
            { Name:"Klaus-Jurgen", CurrentAmount:55000 },
            { Name:"Martin", CurrentAmount:70000 },
            { Name:"Mac", CurrentAmount:35000 },
            { Name:"Friedemann", CurrentAmount:38000 },
            { Name:"Bruno", CurrentAmount:40000 }
            ]);
        private function myFillFunction(element:ChartItem, index:Number):IFill
        {
            var c:SolidColor = new SolidColor(0x00CC00);
            var item:ColumnSeriesItem = ColumnSeriesItem(element);
            var sales:Number = Number(item.yValue);
            if (sales >= 50000) {
                return c;
            } else {
                // They have not met their goal.
                c.color = 0xFF0000;
            }
            return c;
        }
      
    </mx:Script>
    <mx:Panel title="Using a custom fillFunction in a Column Chart">
        <mx:ColumnChart id="myChart" dataProvider="{sales}"
            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" fillFunction="myFillFunction"
                    displayName="Current Sales" />
            </mx:series>
        </mx:ColumnChart>
        <mx:Legend>
            <mx:LegendItem label="More than $50K" 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="Less than $50K" fontWeight="bold">
                <mx:fill>
                    <mx:SolidColor color="0xFF0000" />
                </mx:fill>
                <mx:stroke>
                    <mx:Stroke color="0x000000" weight="1" />
                </mx:stroke>
            </mx:LegendItem>
        </mx:Legend>
    </mx:Panel>
</mx:Application>

   
    
    
    
    
    
    
    
    
    
    
  

Related examples in the same category

1.	Using ArrayCollection Of Verbose MXML Objects for ColumnChart
2.	creates data labels for each of the columns in the ColumnChart control:
3.	Set the value of a ColumnChart control's dataTipMode property to multiple:
4.	Use these methods to cycle through the data points in a ColumnChart control.
5.	Add a CartesianDataCanvas as an annotation element to the ColumnChart control.
6.	Use the addDataChild() method to add children to the data canvas. It adds labels to each of the columns that you select in the ColumnChart control.
7.	Define a data provider on the chart control
8.	Data Tip Function for chart