MACD的DIF上下拐头选股预警

编写要求：

MACD的DIF向上和向下拐头的预警选股公式

www.guhai.com.cn股海网解答：

DIF:=EMA(CLOSE,12)-EMA(CLOSE,26);
XG:(DIF>REF(DIF,1) AND REF(DIF,1)<REF(DIF,2)) OR (DIF<REF(DIF,1) AND REF(DIF,1)>REF(DIF,2));