把下面公式改一下:在一分钟周期中每隔半小时画一条纵线
A:="MIN$5$V";
N:=BARSLAST(A<>REF(A,1))+1;
MN:=3;
DRAWLINE(N=1,H+MN*MINPRICE,1,100000,COLORYELLOW),DOT;
DRAWLINE(N=1,L-MN*MINPRICE,1,0,COLORYELLOW),DOT;
DRAWNUMBER1(N=1,L-10*MINPRICE,TIME,0),VALIGN0;
DRAWNUMBER1(N=1,H+10*MINPRICE,HHV(H,N),0);
(来源:文华财经)