顶底警示，好用。。。。。。。。。。。。。。。。。

LL:=EMA (100*(C-LLV(LOW,34))/(HHV(H,34)-LLV(LOW,34)),3);

DRAWBAND(LL,RGB(50,250,11),10,RGB(255,0,0));

DRAWBAND(90,0,10,0);

警示线:EMA (100*(C-LLV(LOW,34))/(HHV(H,34)-LLV(LOW,34)),3),colormagenta;

预警:90,POINTDOT;

安全区:10,POINTDOT;