通达信好用量价布林公式无未来

BOLL:MA(CLOSE,21);
上档:BOLL+2*STD(CLOSE,21)COLORYELLOW;
下档:BOLL-2*STD(CLOSE,21),COLORYELLOW;
BB:=V>MA(V,5) ;
DD:=V<MA(V,5);
IF(BB,上档,DRAWNULL),COLORRED,LINETHICK2;
IF(DD,下档,DRAWNULL),COLORBLUE,LINETHICK2;