（一）通达信MACD底背离、金叉、二次金叉
MACD:=("MACD.DIF"-"MACD.DEA")*2*60;
JCCOUNT:=COUNT(CROSS("MACD.DIF","MACD.DEA"),BARSLAST("MACD.DEA">=0));
二次金叉:=CROSS("MACD.DIF","MACD.DEA") AND "MACD.DEA"<0 AND COUNT(JCCOUNT=2,21)=1;
A101:=BARSLAST(REF(CROSS("MACD.DIF","MACD.DEA"),1));
底背离:=REF(CLOSE,A101+1)>CLOSE AND "MACD.DIF">REF("MACD.DIF",A101+1) AND CROSS("MACD.DIF","MACD.DEA");
XG:二次金叉 AND 底背离;
（二）同花顺 MACD底背离、金叉、二次金叉精美组合及二次金叉选股公式（源码）
DIFF: EMA(CLOSE,8) - EMA(CLOSE,13),colorwhite;
DEA: EMA(DIFF,9),coloryellow;
MACD: 2*(DIFF-DEA), COLORSTICK;
STICKLINE(MACD<REF(MACD,1)AND MACD>0,0,MACD,0,0),coloryellow;
STICKLINE(MACD>REF(MACD,1)AND MACD<0,0,MACD,0,0),colorgreen;
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)<CLOSE AND REF(DIFF,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;
IF(DIFF<0,DIFF,0),colorred,LINETHICK1;
IF(DIFF<0,0,DIFF),colorred,LINETHICK1;
IF(DIFF<DEA,DIFF,DEA),COLOR00FF00,LINETHICK1;
IF(DIFF>DEA,DEA,DEA),colorwhite,LINETHICK1;
金叉:=CROSS(DIFF,DEA) AND DIFF<0.3;
DIFF:=EMA(CLOSE,8) - EMA(CLOSE,13);
DEA:=EMA(DIFF,9);
MACD:=2*(DIFF-DEA);
JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));
二次金叉:CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;
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