编个波段趋势的选股公式

编写要求：

源码：X1:=(C+L+H)/1.5;X2:=EMA(X1,3);X3:=EMA(X2,2.5);DRAWICON(CROSS(X2,X3),L*0.98,9),COLORRED;STICKLINE(X2>=X3,LOW,HIGH,0,1),COLORRED;STICKLINE(X2>=X3,CLOSE,OPEN,3.2,2),COLORRED;STICKLINE(X2OPEN) AND (X2OPEN) AND (X2>=X3),CLOSE,OPEN,3.2,2)COLORRED;STICKLINE((CLOSE=X3),CLOSE,OPEN,3.2,0)COLORRED;VAR1F:=(CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100;VAR20:=REVERSE(VAR1F);VAR21:=SMA(VAR1F,3,1);移动平均: SMA(VAR21,3,1), COLORRED;参考线: SMA(移动平均,3,1),COLORCYAN ;走势线:SMA(移动平均,2,1),COLORWHITE;关注: IF(CROSS(移动平均,参考线) AND 移动平均<30,33,0), COLORCYAN,LINETHICK2;风险: IF(CROSS(参考线,移动平均) AND 参考线>75,68,100) , COLORGREEN,LINETHICK2;DRAWTEXT(CROSS(移动平均,参考线) AND 移动平均<20,33,'☆--底位金叉') , COLORWHITE;A1:IF(CROSS(移动平均,参考线) AND 移动平均<70 AND 移动平均>40,移动平均*1.1,0),STICK,LINETHICK2,COLORRED;DRAWTEXT(A1,移动平均*1.1,'再次起飞'),LINETHICK2,COLORYELLOW;出现“底位金叉”时的选股，谢谢！

解答：

VAR1F:=(CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100;