发一个大底预警指标，出信号时，大底就在眼前，但为了防止抄底抄在半山腰，还要配合其他指标，提高其准确率。
有时候信号一出现就会出现反转形态，有时候还要观察一段时间，等待时机出现
{大底预警指标公式附图}
VAR1:=(CLOSE-LLV(LOW,36))/(HHV(HIGH,36)-LLV(LOW,36))*100;
VAR2:=SMA(VAR1,3,1);
VAR3:=SMA(VAR2,3,1);
VAR4:=SMA(VAR3,3,1);
VAR5:=CROSS(VAR3,VAR4) AND VAR3<20;
VAR6:=CROSS(VAR2,VAR3) AND VAR3<20 AND VAR3>REF(VAR3,1);
VAR7:=CLOSE>REF(CLOSE,1)*1.05 AND CLOSE=HIGH AND VOL>REF(VOL,1)*1.5;
VAR8:=CLOSE<REF(CLOSE,1)*0.95 AND CLOSE=LOW AND VOL>REF(VOL,1)*1.5;
VAR9:=EMA(CLOSE,12)-EMA(CLOSE,26);
VAR10:=EMA(VAR9,9);
VAR11:=2*(VAR9-VAR10);
VAR12:=COUNT(VAR5,10)>=1;
VAR13:=COUNT(VAR6,10)>=1;
VAR14:=COUNT(VAR7,5)>=1;
VAR15:=COUNT(VAR8,5)>=1;
VAR16:=VAR11>REF(VAR11,1);
大底预警:VAR12 AND VAR13 AND VAR14 AND VAR15 AND VAR16;
STICKLINE(大底预警,0,30,4,0),COLORRED;
DRAWTEXT(大底预警,40,'大底'),COLORYELLOW;
