{參數N: 2 250 20}
MID:=MA(C,N);
VART1:=POW((C-MID),2);
VART2:=MA(VART1,N);
var T3:= SQRT(var T2);
UPPER:= MID+2 * vart 3;
LOWER:= MID-2 * var T3;
BOLL:REF(MID,1),COLORFFFFFF
上升:如果(BOLL & gtREF(BOLL,1),BOLL,DRAWNULL),COLORRED,line thick 1;
下降:如果(boll
UB:REF(UPPER,1),COLOR00FFFF
LB:REF(LOWER,1),COLORFF00FF