在低位金叉和底背离同时出现的位置作个选股公式

编写要求：

清老师帮忙在低位金叉和底背离同时出现的位置作个选股公式如下图DIFF:EMA(CLOSE,12)-EMA(CLOSE,27);DEA:EMA(DIFF,9);MACD:2*(DIFF-DEA), COLORSTICK,LINETHICK2;低位金叉:=CROSS(DIFF,DEA) AND DIFF<-0.1;STICKLINE(低位金叉,0,0.08,6,0),COLORYELLOW;DRAWTEXT(低位金叉,0.16,' 低位金叉'),COLORWHITE;JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));二次金叉:=CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;STICKLINE(二次金叉,0,0.06,6,0),COLORFF00FF;DRAWICON(二次金叉,DEA*0.9,1) ;DRAWTEXT(二次金叉,0.2,' 二次金叉'),COLORYELLOW;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);STICKLINE(底背离,0,0.03,6,0),COLOR00FF00;底背:DRAWLINE(A1=0,DEA,底背离,DEA,0),COLORRED,LINETHICK4;DRAWTEXT(底背离,0.12,' 底背离'),COLORFF00FF;A2:=BARSLAST(REF(CROSS(DEA,DIFF),1));顶背离:=REF(CLOSE,A2+1)DIFF AND CROSS(DEA,DIFF);顶背:DRAWLINE(A2=0,DEA,顶背离,DEA,0),COLORGREEN,LINETHICK4; DRAWTEXT(低位金叉 AND 二次金叉 AND 底背离,0.25,'三全项'),COLOR0000FF,LINETHICK2;

解答：

 DIFF:EMA(CLOSE,12)-EMA(CLOSE,27);