同花顺布林带宽度速率指标公式

N:=26;
P:=2;
MID := MA(CLOSE,N);
UPPER:= MID + P*STD(C,N);
LOWER:= MID - P*STD(C,N);
bollWIDTH:(UPPER-LOWER)/MID,colormagenta;
BOLLWIDTHSPEED:BOLLWIDTH/REF(BOLLWIDTH,1)-1;