把未来不未来组合组图的最下边的红色虚线信号做个选股预警公式

编写要求：

主力:= 3*SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1)-2*SMA(SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1),2,1),LINETHICK2;见底信号: 20, LINETHICK2,COLORRED ;买入准备: IF(主力<=0,50,0), LINETHICK2; 买入时机: IF(CROSS(主力,见底信号),100,18),LINETHICK2,COLORYELLOW;LC:=REF(CLOSE,1);RSI:=SMA(MAX(CLOSE-LC,0),4.1,1)/SMA(ABS(CLOSE-LC),4.1,1)*100,COLORYELLOW,LINETHICK1;红买:FILTER(CROSS(RSI,11),7),COLORRED;STICKLINE(红买,0,12,6,1),COLORRED;VAR200:=(CLOSE-LLV(LOW,30))/(HHV(HIGH,20)-LLV(LOW,20))*100;VAR300:=SMA(SMA(VAR200,3,1),3,1)/28.57;VAR400:=EMA(VAR300,5);操盘:=3*VAR300-2*VAR400;A1:=CROSS(操盘,VAR300) AND VAR300<2.1 AND C>O;STICKLINE(A1,20,0,4,0),COLOR0000FF;DRAWTEXT(A1,23,'满仓'),COLORRED;Q_1:=C-REF(C,1);Q_2:=100*EMA(EMA(Q_1,6),6)/EMA(EMA(ABS(Q_1),6),6);Q_3:=CROSS(EMA(C,19),EMA(C,7));Q_4:=CROSS(EMA(C,7),EMA(C,19));Z1:=L=LLV(L,BARSLAST(Q_3)+1);Z2:=LLV(L,BARSLAST(Q_3)+1);Z3:=H=HHV(H,BARSLAST(Q_4)+1);Z4:=HHV(H,BARSLAST(Q_4)+1);Q_A:=DRAWLINE(Z1,Z2,Z3,Z4,0);Y1:=H=HHV(H,BARSLAST(Q_4)+1);Y2:=HHV(H,BARSLAST(Q_4)+1);Y3:=L=LLV(L,BARSLAST(Q_3)+1);Y4:=LLV(L,BARSLAST(Q_3)+1);Q_B:=DRAWLINE(Y1,Y2,Y3,Y4,0);TJ:=IF(Q_B=1 AND CCI<-40 ,0,-50,1,-1),COLORRED;谢谢了，这个指标里最下面的红色虚线预警

解答：

 Q_3:=CROSS(EMA(C,19),EMA(C,7));