根据“精准买卖通道”指标，编写阳Ｋ线上切买入线选股公式

编写要求：

源码如下：精准买卖通道N 1 100 20M 1 100 32P1 1 100 80P2 1 100 100VAR1:=(C+H+O+L)/4;卖出:XMA(VAR1,N)*(1+P1/1000),COLORGREEN,LINETHICK2;买入:XMA(VAR1,M)*(1-P2/1000),COLORMAGENTA,LINETHICK2;幅度:100*(卖出-买入)/买入,NODRAW;MA1:=MA(VAR1,3);STICKLINE(卖出>LOW AND 卖出MIN(C,O) AND 卖出LOW AND 卖出LOW AND 买入MIN(C,O) AND 买入LOW AND 买入HIGH,OPEN,CLOSE,3,0),COLORMAGENTA;STICKLINE(买入>HIGH,HIGH,LOW,0,0),COLORMAGENTA;DRAWTEXT(CROSS(C,买入) OR (L<买入),LOW*0.95,'Ｂ'),COLORRED,LINETHICK2;DRAWTEXT(CROSS(C,卖出) OR (H>卖出),HIGH*1.02,'Ｓ'),COLORGREEN;A3:=(C-LLV(L,9))/(HHV(H,9)-LLV(L,9))*100;A4:=SMA(A3,3,1);A5:=SMA(A4,3,1);A6:=3*A4-2*A5;A7:=C-REF(C,1);A8:=100*EMA(EMA(A7,6),6)/EMA(EMA(ABS(A7),6),6);买:=LLV(A8,2)=LLV(A8,7) AND COUNT(A8<0,2) AND CROSS(A8,MA(A8,2));DRAWTEXT(FILTER(买=1,5),LOW-0.05,'↖买进'),COLORYELLOW;STICKLINE(买,OPEN,CLOSE,2,0),COLORYELLOW;黄金线:EMA(C,18),POINTDOT,LINETHICK4,COLORYELLOW;

解答：

 N:=20;