[flexcoders] How to set minimum interval on a chart

[scottyale2008]

I can see how to set the vertical axis interval, but what I really 
need is to set the minimum interval.   This basic chart below shows  
alerts, but when there are less  than 10 alerts, my vertical axis 
will show numbers such as ".8, 2.8, etc).  I just want whole 
numbers.  I'm afraid if I set the lineralaxis interval to 1, and then 
when I have a couple hundred alerts I won't get the desired effect.



      <mx:ColumnChart x="226" y="15" id="alertSummaryChart"
            height="131" width="100%"
            showDataTips="true" 
            dataTipFunction="myDataTipFunction"
            dataProvider="{alertsAC}">

        <mx:horizontalAxis>
            <mx:CategoryAxis categoryField="AlertType"/>
        </mx:horizontalAxis>
        <mx:verticalAxis>
              <mx:LinearAxis interval="1"/>
     </mx:verticalAxis>
        
        <mx:series>
                <mx:ColumnSeries 
                    xField="AlertType" 
                    yField="data" 
                    displayName="AlertDesc"
                    fill="{sc1}"
                    stroke="{s1}"
                    fillFunction="columnFill"
                    color="#135D6E"
                />
            </mx:series>
      </mx:ColumnChart>