优化MACD指标，用来选股或预警

买入点位：经典macd指标的绿柱开始缩短第一根，股价收盘价比上一根的股价收盘价高即为买入点，看能否做个选股或预警的指标。想请老师帮忙，万分感谢

 

DIF:=EMA(CLOSE,12)-EMA(CLOSE,26);
DEA:=EMA(DIF,9);
MACD:=(DIF-DEA)*2;
COUNT(REF(MACD,1)<REF(MACD,2),3)>=3 AND MACD>REF(MACD,1) AND C>REF(C,1);