Actionscript 在绘图仪中缩放多个轴

当我以编程方式创建绘图仪时，从没有系列开始，添加系列，并添加自己的缩放、垂直轴和渲染器，但不是行为错误所必需的，此时会显示轴和数据，但默认轴控制所有缩放，而其他轴是错误的。因此，Y值震级不对应于其相关轴，且混合系列w/震级相差很大的数量级会将除最大值以外的所有值挤压成难以区分的楼层值。我无法将默认垂直轴设置为空，因为它会出现空指针错误。[单击图表上的任意位置添加下一个系列。]

package
{
/*
* Attempt to dynamically create graph w/ varying series. Having difficulty getting axis to render correctly based
* on sets of series. Having trouble getting more than one series. I can't munge the yValue property because in my
* actual code all of the data elements are instances of the same class with properties akin to series, xValue, and yValue.
*
*/
import flash.events.MouseEvent;

import mx.charts.AxisRenderer;
import mx.charts.DateTimeAxis;
import mx.charts.LinearAxis;
import mx.charts.PlotChart;
import mx.charts.chartClasses.Series;
import mx.charts.events.ChartEvent;
import mx.charts.series.PlotSeries;
import mx.collections.ArrayCollection;

public class GraphSample extends PlotChart
{
    public function GraphSample()
    {
        super();
        this.selectionMode = "single";
        this.percentWidth = 80;
        this.series = new Array();
        this.verticalAxisRenderers = new Array();
        this.showDataTips = true;
    }

    protected override function createChildren():void {
        super.createChildren();

        // Create the horizontal axis
        var hAxis:DateTimeAxis = new DateTimeAxis();
        hAxis.dataUnits = "days";
        this.horizontalAxis = hAxis; 

        // NOTE: I do not want an automatically created verticalAxis, but can't seem to avoid it
                    // Add vertical axis renderer
        var axis:AxisRenderer = new AxisRenderer();
        axis.axis = this.verticalAxis;
        axis.horizontal = false;
        axis.setStyle("showLabels", true);
        axis.setStyle("showLine", true);
        this.verticalAxisRenderers.push(axis);
        this.verticalAxisRenderers = this.verticalAxisRenderers;

        this.addEventListener(ChartEvent.CHART_CLICK, addSeries);
    }

    private var seriesColors:Array = [0x888888, 0xFFC833, 0xFF6433, 0xE73399, 
        0x8133CC, 0x346B9B, 0x33C399, 0x98F133];
    private var seriesColorCursor:int = 0;

    private const ONE_DAY:Number = (1000 * 60 * 60 * 24);
    private const TODAY:Date = new Date();

    private function addSeries(event:MouseEvent):void {
        var dimension:Object = newDimension();

        var series:Series = new PlotSeries(); 
        series.displayName = dimension.name;
        series.dataFunction = genericFieldRetriever;
        series.setStyle("fill", seriesColors[seriesColorCursor++]);
        if (seriesColorCursor > seriesColors.length) seriesColorCursor %= seriesColors.length;

        series.dataProvider = dimension.elements;
        this.series.push(series);


        var seriesAxis:LinearAxis = new LinearAxis();
        series.setAxis("verticalAxis", seriesAxis);
        var min:Number = Number.MAX_VALUE, max:Number = 0;
        for each (var ele:Object in series.dataProvider) {
            if (ele.value > max) max = ele.value;
            if (ele.value < min) min = ele.value;
        }
        seriesAxis.minimum = min * 0.85;
        seriesAxis.maximum = max * 1.2;
        seriesAxis.displayName = series.displayName;
        seriesAxis.title = series.displayName;

        // Add vertical axis renderer
        var axis:AxisRenderer = new AxisRenderer();
        axis.axis = seriesAxis;
        axis.horizontal = false;
        axis.setStyle("color", series.getStyle("fill"));
        axis.setStyle("showLabels", true);
        axis.setStyle("showLine", true);
        this.verticalAxisRenderers.push(axis);
        this.verticalAxisRenderers = this.verticalAxisRenderers;
        // also strokes?



        // http://www.flexdeveloper.eu/forums/flex-charting/creating-linecolumn-series-dynamically/
        this.series = this.series;
        this.invalidateSeriesStyles();

        if (names.length == 0) this.removeEventListener(ChartEvent.CHART_CLICK, addSeries);
    }

    /**
     * A fake of the server data retrieval mechanism. 
     * @return wrapper w/ name and elements set where each element has a data and value.
     */
    private function newDimension():Object {
        var result:Object = new Object();
        result['name'] = names.shift();
        var elements:ArrayCollection = new ArrayCollection();
        var thisBase:int = base.shift();
        var thisMax:int = maxAdd.shift();
        for (var date:Date = new Date(TODAY.getTime() - 10 * ONE_DAY); date.getTime() <= TODAY.getTime(); date = new Date(date.getTime() + ONE_DAY)) {
            var element:Object = new Object();
            element['date'] = date;
            element['value'] = thisBase + Math.random() * thisMax;
            elements.addItem(element);
        }
        result['elements'] = elements;
        return result;
    }
    private var names:Array = ['fat', 'carbs', 'steps', 'walking miles', 'pounds', 'cycling miles', 'running miles', 'skiing hours', 'lifting mins'];
    private var base:Array = [0, 20, 1000, 0, 100, 0, 0, 0, 0];
    private var maxAdd:Array = [100, 200, 9000, 4, 200, 40, 8, 3, 75];


    private function genericFieldRetriever(series:Series, item:Object, fieldName:String):Object {
          if(fieldName == 'yValue')
              return(item.value);
          else if(fieldName == "xValue")
              return(item.date);
          else
              return null;
    }     

}
}

---

问题出在线路上

 series.setAxis("verticalAxis", seriesAxis);

这不等于

series.verticalAxis = seriesAxis;

一旦我改变了这一点，一切都可以完美地工作，但它无法处理抽象系列类b/c，因为该类没有垂直轴的setter