成交量变异率,VR值低位回升为买入信号
VR:SUM(IF(CLOSE>REF(CLOSE,1),VOL,IF(CLOSE<REF(CLOSE,1),0,VOL)),26)/SUM(IF(CLOSE<REF(CLOSE,1),VOL,0),26)*100; MAVR:MA(VR,6); 买入区:VR<60;