OBV均量布林带指标 (源码)

ST:=OBV*100/MA(OBV,50),COLORCYAN,DOTLINE;
EMA(ST,5),COLORYELLOW;
MID:MA(ST,20),COLORRED,DOTLINE;
UP:MID+2*STD(ST,20),COLORRED;
DN:MID-2*STD(ST,20),COLORRED;
B:100,COLORRED,DOTLINE;