把博易BOLL指标改为通达信_道迪拓金

（主图叠加）

A:=EMA(CLOSE,20) - EMA(CLOSE,60);

B:=EMA(A,8);

D:=2*(A-B);

FILLRGN(D>0,MA(C,20),MA(C,20)+D),COLOR00FFFF;
FILLRGN(D<0,MA(C,20),MA(C,20)+D),COLORFF0000;

MID:=MA(CLOSE,20);
MID+2*STD(CLOSE,20),COLOR0000FF;
MID-2*STD(CLOSE,20),COLOR00FF00;

解答如下：

A:=EMA(CLOSE,20) - EMA(CLOSE,60);

B:=EMA(A,8);

D:=2*(A-B);

DRAWBAND(MA(C,20),RGB(0,0,255),MA(C,20)+D,RGB(255,255,0));

MID:=MA(CLOSE,20);

MID+2*STD(CLOSE,20),COLOR0000FF;

MID-2*STD(CLOSE,20),COLOR00FF00;