红箭头出现的选股公式

编写要求：

DIFF:=(EMA(CLOSE,12) - EMA(CLOSE,26));DEA:=EMA(DIFF,9);MACD2:=(2 * (DIFF - DEA));DU0:=CROSS(DIFF,0);UD0:=CROSS(0,DIFF);TDU0:=BARSLAST(DU0);TUD0:=BARSLAST(UD0);DU3:=REF(DU0,1);UD3:=REF(UD0,1);TDU3:=BARSLAST(DU3);TUD3:=BARSLAST(UD3);UDGLINE:=IF((TDU3 < TUD3),REF(HHV(HIGH,2),TDU3),REF(LLV(LOW,2),TUD3));JDU0:=(((REF(CLOSE,1) <= REF(UDGLINE,1)) AND (CLOSE > UDGLINE)) AND (TDU0 < TUD0));JUD0:=(((REF(CLOSE,1) >= REF(UDGLINE,1)) AND (CLOSE < UDGLINE)) AND (TUD0 < TDU0));JDU1:=(JDU0 AND (COUNT(JDU0,TDU0) = 1));JUD1:=(JUD0 AND (COUNT(JUD0,TUD0) = 1));JDU2:=(JDU1 AND (REF(BARSLAST(JUD1),1) < REF(BARSLAST(JDU1),1)));JUD2:=(JUD1 AND (REF(BARSLAST(JUD1),1) > REF(BARSLAST(JDU1),1)));JDU3:=(JDU1 AND (REF(BARSLAST(JUD1),1) > REF(BARSLAST(JDU1),1)));JUD3:=(JUD1 AND (REF(BARSLAST(JUD1),1) < REF(BARSLAST(JDU1),1)));BSLINE:=IF((BARSLAST(JDU2) < BARSLAST(JUD2)),IF(REF(CROSS(0,MACD2),1),LLV(LOW,2),REF(LLV(LOW,2),BARSLAST(REF(CROSS(0,MACD2),1)))),IF(REF(CROSS(MACD2,0),1),HHV(HIGH,2),REF(HHV(HIGH,2),BARSLAST(REF(CROSS(MACD2,0),1)))));MACD:MACD2,LINETHICK0,COLORFFFF00;DEFUT:=BARSLAST(CROSS(MACD2,0));DEFDT:=BARSLAST(CROSS(0,MACD2));DEFUL:=IF((MACD2 >= 0),HHV(MACD2,(DEFUT + 1)),REF(HHV(MACD2,(DEFUT + 1)),(DEFDT + 1)));DEFDL:=IF((MACD2 < 0),LLV(MACD2,(DEFDT + 1)),REF(LLV(MACD2,(DEFDT + 1)),(DEFUT + 1)));DEFU2L:=REF(DEFUL,(DEFUT + 1));DEFD2L:=REF(DEFDL,(DEFDT + 1));DRAWICON(((((LLV(MACD2,4) > 0) AND (MACD2 < REF(MACD2,1))) AND (REF(MACD2,1) > REF(MACD2,2))) AND (REF(MACD2,2) > REF(MACD2,3))),MACD2,2);DRAWICON(((((HHV(MACD2,4) < 0) AND (MACD2 > REF(MACD2,1))) AND (REF(MACD2,1) < REF(MACD2,2))) AND (REF(MACD2,2) < REF(MACD2,3))),MACD2,1);DRAWICON(((((JUD1 OR (BARSLAST(JDU1) > BARSLAST(JUD1))) AND (MACD2 >= 0)) AND (REF(MACD2,1) < REF(DEFU2L,1))) AND (MACD2 > DEFU2L)),MACD2,1);DRAWICON(((((JDU1 OR (BARSLAST(JDU1) < BARSLAST(JUD1))) AND (MACD2 < 0)) AND (REF(MACD2,1) > REF(DEFD2L,1))) AND (MACD2 < DEFD2L)),MACD2,2);

解答：

 MACD2:=(2 * (DIFF - DEA));