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;
三日DDX:SUM (DDX,3), LINETHICK1,COLORMAGENTA;
换手率:100*VOL/(FINANCE(7)/100),VOLSTICK,NODRAW;
DX:=MA(DDX,5)*N;
STICKLINE(DDX>0,0,DDX,3,0),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,3,0),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;
IF(三日DDX>REF(三日DDX,1),三日DDX,DRAWNULL),COLORYELLOW,LINETHICK6;
通达信自用ddx指标公式的选股公式如下：
