非常好用的通达信买卖线公式，共享给大家，用了2年了

源码

AA:=ABS((2*CLOSE+HIGH+LOW)/4-MA(CLOSE,30))/MA(CLOSE,30);
买卖线:DMA((2*CLOSE+LOW+HIGH)/4,AA),LINETHICK3,COLORMAGENTA;
 CC:=(CLOSE/买卖线);
MA1:=MA(CC*(2*CLOSE+HIGH+LOW)/4,3);
 MAAA:=((MA1-买卖线)/买卖线)/3;
 TMP:=MA1-MAAA*MA1;
 J:IF(TMP<=买卖线,买卖线,DRAWNULL),LINETHICK3,COLORCYAN;
 A:TMP,LINETHICK2,COLORYELLOW;
 X:IF(TMP<=买卖线,TMP,DRAWNULL),LINETHICK2,COLORGREEN;