DDX选股公式
连红：
P3:=(BIGORDER(1)-BIGORDER(2))*vol/CAPITAL*100;
UP:=P3>0;
COUNT(UP,N)=N;
连增：
P3:=(BIGORDER(1)-BIGORDER(2))*vol/CAPITAL*100;
TOW:=P3-REF(P3,1)>0;
COUNT(TOW,N)=N;
连红连增：
P3:=(BIGORDER(1)-BIGORDER(2))*vol/CAPITAL*100;
UP:=P3>0;
TOW:=P3-REF(P3,1)>0;
COUNT(UP,N)=N and COUNT(TOW,N)=N;
实战DDX源码：
input:p1(5),p2(10);
refline:0;
P3:=(BIGORDER(1)-BIGORDER(2))*vol;
DDX:P3/CAPITAL*100,COLORSTICK;
DDX1:SUM(DDX,0);
DDX2:MA(DDX1,p1);
DDX3:MA(DDX2,p2);
