编写条件：
编写方法：
网友求助：
VA:=IF(CLOSE>REF(CLOSE,1),vol,-VOL);
obv:SUM(IF(CLOSE=REF(CLOSE,1),0,VA),0);
MAOBV:MA(OBV,M);
obv:SUM(IF(CLOSE=REF(CLOSE,1),0,VA),0);
MAOBV:MA(OBV,M);
要求：OBV上穿MAOBV
解答如下：
VA:=IF(CLOSE>REF(CLOSE,1),VOL,-VOL);
OBV:=SUM(IF(CLOSE=REF(CLOSE,1),0,VA),0);
MAOBV:=MA(OBV,M);
crOSS(OBV,MAOBV);
OBV:=SUM(IF(CLOSE=REF(CLOSE,1),0,VA),0);
MAOBV:=MA(OBV,M);
crOSS(OBV,MAOBV);
