set a threshold value in the TextInput control. : TextInput « Components « Flex

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2. Components
3. TextInput

set a threshold value in the TextInput control.

          

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<!-- charts/ConditionallySelectChartItems.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Script>
        
        import mx.collections.ArrayCollection;
        [Bindable]
        private var expensesAC:ArrayCollection = new ArrayCollection( [
            { Month: "Jan", Profit: 2000, Expenses: 1500, Amount: 450 },
            { Month: "Feb", Profit: 1000, Expenses: 200, Amount: 600 },
            { Month: "Mar", Profit: 1500, Expenses: 500, Amount: 300 },
            { Month: "Apr", Profit: 1800, Expenses: 1200, Amount: 900 },
            { Month: "May", Profit: 2400, Expenses: 575, Amount: 500 } ]);
        private function selectItems(event:Event):void {
            // Create an array of all the chart's series.
            var allSeries:Array = myChart.series;
            // Iterate over each series.
            for (var i:int=0; i<allSeries.length; i++) {
                var selectedData:Array = [];
                // Iterate over each item in the series.
                for (var j:int=0; j<expensesAC.length; j++) {
                    if (expensesAC.getItemAt(j).Profit >= Number(threshold.text)) {
                        selectedData.push(j);
                    }
                }
                // Use the series' selectedIndices property to select all the
                // chart items that met the criteria.
                allSeries[i].selectedIndices = selectedData;
            }
        }
      
    </mx:Script>
    <mx:Panel height="100%" width="100%">
        <mx:PlotChart id="myChart" height="207" width="350" showDataTips="true"
            dataProvider="{expensesAC}" selectionMode="multiple">
            <mx:series>
                <mx:PlotSeries id="series1" xField="Expenses" yField="Profit"
                    displayName="Expenses/Profit" selectable="true" />
                <mx:PlotSeries id="series2" xField="Amount" yField="Expenses"
                    displayName="Amount/Expenses" selectable="true" />
                <mx:PlotSeries id="series3" xField="Profit" yField="Amount"
                    displayName="Profit/Amount" selectable="true" />
            </mx:series>
        </mx:PlotChart>
        <mx:Legend dataProvider="{myChart}" width="200" />
        <mx:TextInput id="threshold" text="1000" />
        <mx:Button label="Select Items" click="selectItems(event)" />
    </mx:Panel>
</mx:Application>

   
    
    
    
    
    
    
    
    
    
  

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