通達信DDX波段轉向預警指標公式：

WJ:=(H+L+C)/3;
V1:=IF(H=L,1,H-MAX(O,C));
V2:=IF(H=L,1,MAX(C,O)-WJ);
V3:=IF(H=L,1,MIN(O,C)-L);
V4:=IF(H=L,1,WJ-MIN(C,O));
V5:=VOL/IF(H=L,4,H-L);
V6:=(V1*V5);
V7:=(V2*V5);
V8:=(V3*V5);
V9:=(V4*V5);
買盤:=(V9+V8);
賣盤:=(V6+V7);
買賣差:=買盤-賣盤;
DDX:=買賣差;
DX:=MA(買賣差,5)*20;
N:=5;
M:=13;
N日內凈流入:=SUM(DDX,N)*3;
流入:=IF(N日內凈流入>REF(N日內凈流入,1),N日內凈流入,DRAWNULL);
DRAWBAND(N日內凈流入,RGB(100,100,100),0,RGB(0,100,150));
{波段轉向}{5天3%}
DLX1:=SMA(DX,3,1),LINETHICK,COLORWHITE;
RSV:=((C-LLV(L,6))/(HHV(H,6)-LLV(L,6)))*100;
K:=POW(SMA(RSV,2,1),5)/POW(10,8);
D:=POW(SMA(RSV,2,1),5)/POW(10,10);
J:=(K+ D)/2;
花開短買:IF(CROSS(J,1),1,0) AND DLX1>REF(DLX1,1),COLORYELLOW;
IF(花開短買,150000,DRAWNULL),CROSSDOT,LINETHICK6,COLORFF33FF;
IF(花開短買,150000,DRAWNULL),POINTDOT,LINETHICK4,COLOR00CCFF;
{IF(MACD>=0 AND REF(MACD,1)<0,1,DRAWNULL),CROSSDOT,LINETHICK6,COLORFF33FF;
IF(MACD>=0 AND REF(MACD,1)<0,1,DRAWNULL),POINTDOT,LINETHICK4,COLOR00CCFF;}
RSI1:=N日內凈流入;
AA:=REF(RSI1,N)=HHV(RSI1,2*N+1);
BB:=BACKSET(AA,N+1);
CC:=FILTER(BB,N) AND RSI1=HHV(RSI1,N+1);
A1:=BARSLAST(REF(CC,1));
頂背離:REF(CLOSE,A1+1)<CLOSE AND REF(RSI1,A1+1)>RSI1 AND CC,COLORRED;
DRAWLINE(CC,RSI1,FILTER(頂背離>0,5),RSI1,0),COLORRED;
AA2:=REF(RSI1,N)=LLV(RSI1,2*N+1);
BB2:=BACKSET(AA2,N+1);
CC2:=FILTER(BB2,N) AND RSI1=LLV(RSI1,N+1);
A2:=BARSLAST(REF(CC2,1));
底背離:REF(CLOSE,A2+1)>CLOSE AND REF(RSI1,A2+1)<RSI1 AND CC2,COLORCYAN;
DRAWLINE(CC2,RSI1,FILTER(底背離>0,5),RSI1,0),COLORCYAN;
STICKLINE(DDX<0,0,DDX,4,0),COLORFF6600;
STICKLINE(DDX<0,0,DDX,3,0),COLORFF9900;
STICKLINE(DDX<0,0,DDX,1.5,0),COLORFFCC00;
STICKLINE(DDX<0,0,DDX,0,0),COLOR66CCFF;
STICKLINE(DDX>0,0,DDX,4,0),COLOR000099;
STICKLINE(DDX>0,0,DDX,3,0),COLOR0000CC;
STICKLINE(DDX>0,0,DDX,1.5,0),COLOR0000FF;
STICKLINE(DDX>0,0,DDX,0,0),COLORCC66FF;
DDX1:SMA(DX,3,1),COLORFFFFFF;
DDX2:SMA(DDX1,3,1),COLOR00FFFF;
DDX3:(5*DDX2+4*REF(DDX2,1)+3*REF(DDX2,2)+2*REF(DDX2,3)+REF(DDX2,4))/15;
預警:DDX>0 AND MA(V,5)>MA(MA(V,5),5) AND CROSS(DDX1,DDX2),LINETHICK;
天:=COUNT(DDX>0,5),COLORRED;
DRAWTEXT(預警,DDX*1.06,'★'),LINETHICK3,COLOR00FFFF;

通達信DDX波段轉向預警指標公式實例圖解：

通達信DDX波段轉向預警指標公式