DDX金叉选股公式:
DDX:=(BIGORDER(1,2)-BIGORDER(2,2))*VOL/CAPITAL*100;
DDX1:=EMA(DDX,60)*60;
DDX2:=MA(DDX1,5);
DDX3:=MA(DDX1,10);
A1:=CROSS(DDX1,DDX2);
A2:=CROSS(DDX1,DDX3);
a3:=sum(vol,21)/capital;
A1 AND A2 and a3<=1;

DDX底背离选股公式:
DDX:=(BIGORDER(1,2)-BIGORDER(2,2))*VOL/CAPITAL*100;
DDX1:=EMA(DDX,60)*60;
DDX2:=MA(DDX1,5);
DDX3:=MA(DDX1,10);
A1:=BARSLAST(REF(CROSS(DDX1,DDX2),1));
底背离:=REF(CLOSE,A1+1)>CLOSE AND DDX1>REF(DDX1,A1+1) AND CROSS(DDX1,DDX2);