以下是通达信高仿DDX（指标源码贴图）

N:=20;
 JJ:=(HIGH+LOW+CLOSE)/3;
 QJ0:=VOL/IF(HIGH=LOW,4,HIGH-LOW);
 QJ1:=IF(CAPITAL=0,QJ0*(JJ-MIN(CLOSE,OPEN)),QJ0*IF(HIGH=LOW,1,(MIN(OPEN,CLOSE)-LOW)));
 QJ2:=IF(CAPITAL=0,QJ0*(MIN(OPEN,CLOSE)-LOW),QJ0*IF(HIGH=LOW,1,(JJ-MIN(CLOSE,OPEN))));
 QJ3:=IF(CAPITAL=0,QJ0*(HIGH-MAX(OPEN,CLOSE)),QJ0*IF(HIGH=LOW,1,(HIGH-MAX(OPEN,CLOSE))));
 QJ4:=IF(CAPITAL=0,QJ0*(MAX(CLOSE,OPEN)-JJ),QJ0*IF(HIGH=LOW,1,(MAX(CLOSE,OPEN)-JJ)));
 DDX:((QJ1+QJ2)-(QJ3+QJ4))/IF(CAPITAL=0,1000000,10000),COLOR00AAAA,LINETHICK;
 DX:=MA(DDX,5)*N;
 STICKLINE(DDX>0,0,DDX,2,0),COLOR000088;
 STICKLINE(DDX>0,0,DDX,2.5,0),COLOR0000AA;
 STICKLINE(DDX>0,0,DDX,1.5,0),COLOR0000CC;
 STICKLINE(DDX>0,0,DDX,1,0),COLOR0000EE;
 STICKLINE(DDX<0,0,DDX,2,0),COLOR008800;
 STICKLINE(DDX<0,0,DDX,2.5,0),COLOR00AA00;
 STICKLINE(DDX<0,0,DDX,1.5,0),COLOR00CC00;
 STICKLINE(DDX<0,0,DDX,1,0),COLOR00EE00;
 DDX1:SMA(DX,3,1),COLORFFFFFF;
 DDX2:SMA(DDX1,3,1),COLOR00FFFF;
 DDX3:EMA(DDX2,5),COLORFF00FF;
预警:DDX>0 AND MA(V,5)>MA(MA(V,5),5) AND CROSS(DDX1,DDX2),LINETHICK;
天:=COUNT(DDX>0,5),COLORRED;
 DRAWTEXT(预警,DDX*1.06,’★’),LINETHICK6,COLOR00FFFF;
 

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