策略代码加入RSI部分，结果图层显示就变成下图一样，k线缩到上面去了，请问这个何解？

//Range[0:DataSourceSize() - 1]

       If(1==1)

{

If(CurrentBar <= Length - 1)

{

NetChgAvg = ( Close - Close[Length] ) / Length ;

TotChgAvg = Average( Abs( Close - Close[1] ), Length ) ;

}Else

{

SF = 1/Length;

Change = Close - Close[1] ;

NetChgAvg = NetChgAvg[1] + SF * ( Change - NetChgAvg[1] ) ;

TotChgAvg = TotChgAvg[1] + SF * ( Abs( Change ) - TotChgAvg[1] ) ;

}

If( TotChgAvg <> 0 )

{

ChgRatio = NetChgAvg / TotChgAvg;

}else

{

ChgRatio = 0 ;

}

RSIValue = 50 * ( ChgRatio + 1 );

PlotNumeric("RSI",RSIValue);

PlotNumeric("超买",OverBought);

PlotNumeric("超卖",OverSold);

Commentary("LINE280-RSI,超买,超卖=" + Text(RSIValue) + "," + Text(OverBought) + "," + Text(OverSold));

}