VAR1:=LLV(LOW,100);
VAR2:=HHV(HIGH,250);
走势: EMA((CLOSE-VAR1)/(VAR2-VAR1)*4,4);
底线:0.3,LINETHICK2,COLOR0000FF;
顶线:3.5,LINETHICK2,COLORFF00FF;
中线:2,COLOR00FFFF;
DRAWTEXT(CROSS(走势,底线),0.00,'买'), coloryellow, ;
DRAWTEXT(CROSS(走势,顶线),3.8,'卖'), coloryellow, ;
