PROSAGA码农传奇-模型可视化-在lightningChart中，如何锁定2轴或更多轴的Y轴以保持零点始终同步？

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  <P>
    谢谢Eric问这个问题。
图表和轴有事件可以帮助您自定义处理此类案例。
据记住，在相同的水平位置没有几个YAx的属性，例如放大，平移事件处理并相应地修改Axis的范围。下面是如何将两个轴（相同的段）的参考值固定到图形区域的中间的示例。
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   <pre>
    <code>
          private void ViewXY_Zoomed(object sender, Arction.Wpf.Charting.Views.ViewXY.ZoomedXYEventArgs e)
    {
        AxisY axis0 = _chart.ViewXY.YAxes[0];
        AxisY axis1 = _chart.ViewXY.YAxes[1];

// get segment top & bottom coordinates [PX]
        GraphSegmentInfo gsi = _chart.ViewXY.GetGraphSegmentInfo();
        float fTop = gsi.SegmentTops[0];
        float fBottom = gsi.SegmentBottoms[0];

int iScreenCoordForRefValue = (int)(fTop + fBottom) / 2;
        float fAxis0RefValue = 50, fAxis1RefValue = 0;

double dAxis0ValueAtCoord, dAxis1ValueAtCoord;
        axis0.CoordToValue(iScreenCoordForRefValue, out dAxis0ValueAtCoord, false);
        axis1.CoordToValue(iScreenCoordForRefValue, out dAxis1ValueAtCoord, false);

// pan Axis' RefValue position at RefScreenCoord
        double dNewMinAxis0 = axis0.Minimum - (dAxis0ValueAtCoord - fAxis0RefValue);
        double dNewMaxAxis0 = axis0.Maximum - (dAxis0ValueAtCoord - fAxis0RefValue);
        double dNewMinAxis1 = axis1.Minimum - (dAxis1ValueAtCoord - fAxis1RefValue);
        double dNewMaxAxis1 = axis1.Maximum - (dAxis1ValueAtCoord - fAxis1RefValue);

_chart.BeginUpdate();

axis0.SetRange(dNewMinAxis0, dNewMaxAxis0);
        axis1.SetRange(dNewMinAxis1, dNewMaxAxis1);

_chart.EndUpdate();
    }

</code>
  </pre>
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