这是一个我见过的最为准确和实用的免费波段指标，它不仅包括持币/持股波段，而且还有底顶提示和强势提示。此指标不含有任何未来函数，也没有使用任何未来数据，信号因此不会漂移。
 

B1:=MA(C,1);
 B2:=SMA(SMA(SMA(B1,2,1),2,1),2,1);
 SMA2:=MA(B2,3);
下限:IF(LLV(MA(B2,8),3)<B2,LLV(MA(B2,8),3),B2);
个股红:=B2>SMA2;
个股绿:=B2<SMA2;
 IF(个股红,B2,DRAWNULL),COLORRED,LINETHICK3;
 IF(个股绿,B2,DRAWNULL),COLORGREEN,LINETHICK3;
上限:HHV(MA(B2,1),13),COLORYELLOW;
 VAR1A:=(2*CLOSE+HIGH+LOW)/4;
 VAR2A:=MA(VAR1A,7);
 VAR3A:=VAR2A-MA(VAR1A,7/2)<0;
 VAR4A:=VAR2A-MA(VAR1A,7/2)>0;
 VAR5A:=BARSLAST(VAR3A);
 VAR6A:=0-BARSLAST(VAR4A);
 VAR7A:=IF(VAR3A<=0,VAR5A,VAR6A);
 STICKLINE(上限>B2 AND B2>SMA2,上限,B2,0,0),COLORBLUE;
 STICKLINE(上限>SMA2 AND B2<SMA2,上限,SMA2,0,0),COLORBLUE;
 VAR11A:=(CLOSE*2+HIGH+LOW)/4;
 VAR21A:=EMA(VAR11A,13)-EMA(VAR11A,34);
 VAR31A:=EMA(VAR21A,5);
 VAR2:=((CLOSE > REF(CLOSE,1)) AND (CLOSE > REF(CLOSE,2)));
 VAR3:=((REF(VAR2,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR4:=((REF(VAR3,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR5:=((REF(VAR4,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR6:=((REF(VAR5,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR7:=((REF(VAR6,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR8:=((REF(VAR7,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR9:=((REF(VAR8,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VARA:=((REF(VAR9,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VARB:=((REF(VARA,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VARC:=((REF(VARB,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VARD:=((REF(VARC,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VARE:=((CLOSE < REF(CLOSE,1)) AND (CLOSE < REF(CLOSE,2)));
 VARF:=((REF(VARE,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR10:=((REF(VARF,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR11:=((REF(VAR10,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR12:=((REF(VAR11,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR13:=((REF(VAR12,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR14:=((REF(VAR13,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR15:=((REF(VAR14,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR16:=((REF(VAR15,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR17:=((REF(VAR16,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR18:=((REF(VAR17,1) AND (CLOSE <= REF(CLOSE,1))) AND (CLOSE >= REF(CLOSE,2)));
 VAR19:=((REF(VAR18,1) AND (CLOSE >= REF(CLOSE,1))) AND (CLOSE <= REF(CLOSE,2)));
 VAR1B:=(REF((((((((((((VARE OR VARF) OR VAR10) OR VAR11) OR VAR12) OR VAR13) OR VAR14) OR VAR15) OR VAR16) OR VAR17) OR VAR18) OR VAR19),1) AND VAR2);
 STICKLINE(VAR1B,O,O+(C-O)/3,2,0),COLOR00FFFF;{粗黄柱}
STICKLINE(VAR1B,O,O+(C-O)/3,1,0),COLOR00FFFF;
 AA:=(REF((((((((((((VAR2 OR VAR3) OR VAR4) OR VAR5) OR VAR6) OR VAR7) OR VAR8) OR VAR9) OR VARA) OR VARB) OR VARC) OR VARD),1) AND VARE);
 STICKLINE(AA,O,O+(C-O)/3,2,0),COLOR00EE00;{粗绿柱}
STICKLINE(AA,O,O+(C-O)/3,1,0),COLOR00FF00;
 A13:=EMA(CLOSE,55);
 A14:=MA(CLOSE,75);
 A15:=EMA(A14,3);
 A16:=EMA(A15,3);
 A17:=(HIGH + LOW) / 5;
 A18:=(MA(A17,4)) - (MA(A17,34));
 A19:=CROSS(A18,0);
 A20:=CROSS(0,A18);
 A21:=BARSLAST(A19);
 A22:=BARSLAST(A20);
 A23:=REF(A19,1);
 A24:=REF(A20,1);
 A25:=BARSLAST(A23);
 A26:=BARSLAST(A24);
 A27:=IF((A25 < A26),(REF((HHV(HIGH,2)),A25)),(REF((LLV(LOW,2)),A26)));
 A28:=(((REF(CLOSE,1)) <= (REF(A27,1))) AND (CLOSE > A27)) AND (A21 < A22);
 A29:=(((REF(CLOSE,1)) >= (REF(A27,1))) AND (CLOSE < A27)) AND (A22 < A21);
 A30:=A28 AND ((COUNT(A28,A21)) = 1);
 A31:=A29 AND ((COUNT(A29,A22)) = 1);
 A32:=A30 AND ((REF(BARSLAST(A31),1)) < (REF(BARSLAST(A30),1)));
 A33:=A31 AND ((REF(BARSLAST(A31),1)) > (REF(BARSLAST(A30),1)));
 DRAWTEXT(A32,SMA2*0.99,'←═≒∝'),COLORYELLOW;
 AC:=AMOUNT/(VOL);
 YY:=MA(AC,13);
 LLL:=(C-YY)/YY*100;
 MIDC :=  MA(CLOSE,22);
 UPPERC:= MIDC + 2*STD(C,22);
 LOWERC:= MIDC - 2*STD(C,22);
 BBA:=(C-LOWERC)/(UPPERC-LOWERC);
 BBC:=FORCAST(BBA,3);
 LIFENGCYC:=(REF(LLL,1)<-15 AND REF(BBA,1)<0 AND LLL>REF(LLL,1));
 {//STICKLINE(LIFENGCYC,BBC,0.5,6,0);}
 {//BBD:(UPPER+LOWER)/2*(C-UPPER);}
 STICKLINE(LIFENGCYC>0,C,O,2,0),COLOR10ABFF;
 {STICKLINE(LIFENGCYC>0,C,O,1.5,0),COLOR10D0FF;
 STICKLINE(LIFENGCYC>0,C,O,1,0),COLOR10FFFF;}
 DRAWTEXT(LIFENGCYC>0,LOW*0.99,'☆'),COLORDD00DD;