黑马过滤线，买入信号明确关注金叉位置，黄金叉紫

黑马过滤线:0;

Var1:=SUM(MAX(MAX(HIGH-LOW,ABS(HIGH-REF(CLOSE,1))),ABS(LOW-REF(CLOSE,1))),14);

Var2:=HIGH-REF(HIGH,1);

Var3:=REF(LOW,1)-LOW;

Var4:=SUM(IF(Var2>0 AND Var2>Var3,Var2,0),14);

Var5:=SUM(IF(Var3>0 AND Var3>Var2,Var3,0),14);

Var6:=Var4*100/Var1;

Var7:=Var5*100/Var1;

PIA: MA(Var6,3);

MIA: MA(Var7,3);