通达信停损下限指标（趋势型）指标公式
核心逻辑
该指标是一个复合型趋势跟踪系统，主要包含三个核心部分： 1. **主趋势线**：通过三次SMA嵌套平滑处理价格（类似"蛇形"均线），用于追踪中期趋势 2. **止损线**：动态计算的支撑位，当价格跌破时可能触发止损 3. **K线形态识别**：识别连续上涨（红三兵到七连阳）和连续下跌（黑三兵到七连阴）的K线组合，用于判断趋势转折 4. **波动率分析**：结合均线偏离度和布林带原理判断超买超卖 整体逻辑是：通过平滑后的均线判断趋势方向，结合K线形态和波动率指标寻找趋势转折点，并设置动态止损保护。
买卖信号
**买入信号：** - A32条件触发（符合特定买入形态）时显示"←═≒∝"黄色文字信号 - LIFENGCYC条件满足（前日偏离度<-15%且当日回升）时显示紫色"☆"信号 - VAR1B条件满足（连续下跌后出现上涨K线）时显示青色柱状线 **卖出信号：** - AA条件满足（连续上涨后出现下跌K线）时显示绿色柱状线 - B2<SMA2时显示绿色线条（趋势转弱） - 停损下限被跌破时触发止损
用法
1. **趋势判断**：红线表示上升趋势（买入持有），绿线表示下降趋势（观望或卖出） 2. **买入时机**：关注"☆"和"←═≒∝"信号出现时，结合红线和蓝色区域判断 3. **止损保护**：关注停损下限线，跌破后及时止损 4. **形态配合**：红三兵/七连阳后出现绿色柱状线可能预示顶部；黑三兵后出现青色柱状线可能预示底部 5. **综合分析**：建议结合成交量和其他趋势指标综合判断，避免单一信号交易
公式源码
B1:=MA(C,1);
B2:=SMA(SMA(SMA(B1,2,1),2,1),2,1);
SMA2:=MA(B2,3);
停损下限:IF(LLV(MA(B2,8),3)<B2,LLV(MA(B2,8),3),B2);
IF(B2>SMA2,B2,DRAWNULL),COLORRED,LINETHICK4;
IF(B2<SMA2,B2,DRAWNULL),COLORGREEN,LINETHICK4;
SNAKEA: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(SNAKEA>B2 AND B2>SMA2,SNAKEA,B2,0,0),COLORBLUE;
STICKLINE(SNAKEA>SMA2 AND B2<SMA2,SNAKEA,SMA2,0,0),COLORBLUE;
VAR11A:=(CLOSE*2+HIGH+LOW)/4;
VAR21A:=EMA(VAR11A,13)-EMA(VAR11A,34);
VAR31A:=EMA(VAR21A,5);
{STICKLINE((C>=O),OPEN,LOW,0,0),COLOR0726CA;
STICKLINE((C>=O),CLOSE,HIGH,0,0),COLOR0726CA;
STICKLINE((C<O),CLOSE,LOW,0,0),COLORDE9100;
STICKLINE((C<O),OPEN,HIGH,0,0),COLORDE9100;
STICKLINE((C<O),CLOSE,OPEN,2.5,0),COLORFFCC00;
STICKLINE((C<O),CLOSE,OPEN,1.5,0),COLORFFFF00;
STICKLINE((C>O),CLOSE,OPEN,2,0),COLOR0754E9;
STICKLINE((C>O),CLOSE,OPEN,1.5,0),COLOR076EF3;
STICKLINE((C>O),CLOSE,OPEN,1,0),COLOR077BF3;}
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)/3,3,0),COLOR10D0FF;}
STICKLINE(VAR1B,O,O+(C-O)/3,2,0),COLOR10FFFF;
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)/3,3,0),COLOR00DD00;}
STICKLINE(AA,O,O+(C-O)/3,2,0),COLOR00EE00;
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;
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