MACD零轴下二次金叉且同时出现底背离选股公式

MACD零轴下二次金叉且同时出现底背离选股公式。

DIFF:=EMA(CLOSE,12)-EMA(CLOSE,26);

DEA:=EMA(DIFF,9);
A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));
底背离选股:REF(CLOSE,A1+1)>CLOSE AND DIFF>REF(DIFF,A1+1) AND CROSS(DIFF,DEA);