LogAxis  - AS3 Flex

<?xml version="1.0"?>
<!-- Simple example to demonstrate the LogAxis class. -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark" 
    xmlns:mx="library://ns.adobe.com/flex/mx">

    <fx:Script>
        <![CDATA[

        import mx.collections.ArrayCollection;

        [Bindable]
        private var expensesAC:ArrayCollection = new ArrayCollection( [
            { Month: "Jan", Profit: 20000, Expenses: 1500, Amount: 450 },
            { Month: "Feb", Profit: 1000, Expenses: 15000, Amount: 600 },
            { Month: "Mar", Profit: 15000, Expenses: 5000, Amount: 300 },
            { Month: "Apr", Profit: 1800, Expenses: 1200, Amount: 900 },
            { Month: "May", Profit: 2400, Expenses: 575, Amount: 500 } ]);
        ]]>
    </fx:Script>

    <mx:Panel title="LogAxis Example" height="100%" width="100%">

        <mx:LineChart id="linechart" height="100%" width="100%"
            paddingLeft="5" paddingRight="5" 
            showDataTips="true" dataProvider="{expensesAC}">
                
            <mx:horizontalAxis>
                <mx:CategoryAxis categoryField="Month"/>
            </mx:horizontalAxis>
                
            <mx:verticalAxis>
                <mx:LogAxis interval="10"/>
            </mx:verticalAxis>
                
            <mx:series>
                <mx:LineSeries yField="Profit" form="curve" displayName="Profit"/>
                <mx:LineSeries yField="Expenses" form="curve" displayName="Expenses"/>
                <mx:LineSeries yField="Amount" form="curve" displayName="Amount"/>
            </mx:series>
        </mx:LineChart>

        <mx:Legend dataProvider="{linechart}"/>

    </mx:Panel>
</s:Application>