学会这个方法，抓10倍大牛股的概率提升10倍>>

bu:=cross(high,SAR(3,1,20));

sel:=cross(SAR(3,1,20),low);

var1:=last(high<SAR(3,1,20));

var2:=last(low>sar(3,1,20));

drawflagtext(bu,high,'买入');

drawflagtext(sel,low,'卖出');

drawtext(bu,LOW,'B'),valign0,align1,coloryellow,linethick2;

drawtext(sel,HIGH,'S'),valign2,align1,colorgreen,linethick2;

STICKLINE(low>SAR(3,1,20) and isdown,high,open,0.5,1),colorred;

STICKLINE(low>SAR(3,1,20) and isdown,close,open,7.5,1),colorred;

STICKLINE(low>SAR(3,1,20) and isdown,close,low,0.5,1),colorred;

STICKLINE(high<SAR(3,1,20) and isup,high,close,0.5,1),colorcyan;

STICKLINE(high<SAR(3,1,20) and isup,close,open,7.5,1),colorcyan;

STICKLINE(high<SAR(3,1,20) and isup,open,low,0.5,1),colorcyan;

DRAWTEXTABS,linethick1,COLOR00EEff;

drawflagtext(high<SAR(3,1,20) and high>=ref(high,1),high,'明日突破'+forcast(sar(3,1,20),max(var1,2))+'建议关注');

drawflagtext(high<SAR(3,1,20) and high<ref(high,1),high,'持币观望');

drawflagtext(low>SAR(3,1,20) and low<=ref(low,1),low,'明日跌破'+forcast(sar(3,1,20),max(var2,2))+'注意止盈');

drawflagtext(low>SAR(3,1,20) and low>ref(low,1),low,'继续持股');