根据(MACD)公式编写个 底背离选股公式

编写要求：

DIFF:=EMA(DCLOSE,12)-EMA(DCLOSE,26); DEA:=EMA(DIFF,9),COLORFFFF00; A1:=BARSLAST(REF(CROSS(DIFF,DEA),1)); 底背离:=REF(CLOSE,A1+1)>CLOSE AND DIFF>REF(DIFF,A1+1) AND CROSS(DIFF,DEA); 底背离1:IF(底背离,57,0),LINETHICK2,COLORFF00FF; DRAWTEXT(底背离,54,'←底背离'),COLORWHITE;

解答：

?DIFF:=EMA(DCLOSE,12)-EMA(DCLOSE,26);

DEA:=EMA(DIFF,9),COLORFFFF00;