Use an ArrayCollection, convert the HTTPService result to an ArrayCollection

      

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    <!-- charts/HTTPServiceToArrayCollectionDataProvider.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:s="library://ns.adobe.com/flex/spark"
    height="600">
    <fx:Script> 
        import mx.collections.ArrayCollection; 
        [Bindable] 
        private var expenses:Array = [ 
            {Month:"January", Profit:2000, Expenses:1500, Amount:450}, 
            {Month:"February", Profit:1000, Expenses:200, Amount:600}, 
            {Month:"March", Profit:1500, Expenses:500, Amount:300}, 
            {Month:"April", Profit:500, Expenses:300, Amount:500}, 
            {Month:"May", Profit:1000, Expenses:450, Amount:250}, 
            {Month:"June", Profit:2000, Expenses:500, Amount:700} 
        ]; 
      </fx:Script>
    <fx:Script> 
        import mx.collections.ArrayCollection; 
        [Bindable] 
        public var myData:ArrayCollection; 
      </fx:Script>
    <s:layout>
        <s:VerticalLayout />
    </s:layout>
    <s:Panel title="Line Chart">
        <s:layout>
            <s:VerticalLayout />
        </s:layout>
        <mx:LineChart id="myChart" dataProvider="{expenses}"
            showDataTips="true">
            <mx:horizontalAxis>
                <mx:CategoryAxis categoryField="Month" />
            </mx:horizontalAxis>
            <mx:series>
                <mx:LineSeries yField="Profit" displayName="Profit" />
                <mx:LineSeries yField="Expenses" displayName="Expenses" />
            </mx:series>
        </mx:LineChart>
        <mx:Legend dataProvider="{myChart}" />
    </s:Panel>
</s:Application>

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Use an ArrayCollection, convert the HTTPService result to an ArrayCollection : HTTPService « Data Model « Flex

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