A1:=(LARGEINTRDVOL-LARGEOUTTRDVOL)*10000/FINANCE(7);
A2:=(LARGEOUTTRDVOL-LARGEINTRDVOL)*10000/FINANCE(7);
DDX买:IF(A1>0,A1,DRAWNULL),NODRAW;
DDX卖:IF(A2>0,A2,DRAWNULL),NODRAW;
STICKLINE(DDX买>0,0,DDX买,2,0),COLORRED;
STICKLINE(DDX卖>0,0,DDX卖,2,0),COLORCYAN;
