c1:=callstock(stklabel,vtvol,0);
c2:=callstock(stklabel,vtvol,0,-1);
c3:=callstock(stklabel,vtvol,0,-2);
c4:=callstock(stklabel,vtvol,0,-3);
//最近4个
c5:=callstock(stklabel,vtvol,0,-4);
c6:=callstock(stklabel,vtvol,0,-5);
c7:=callstock(stklabel,vtvol,0,-6);
c8:=callstock(stklabel,vtvol,0,-7);
//前4个
条件:= c1>800 and c2>800 and c3>800 and c4>800 and c5<400 and c6<400 and c7<400 and c8<400;
多半是你没有历史分笔数据