提前金叉和提前死叉 更准确些

LOWV:=EMA(LLV(LOW,34),3);
HIGHV:=EMA(HHV(HIGH,34),3);
RSV:=EMA((CLOSE-LOWV)/(HIGHV-LOWV)*100,3);
K:SMA(RSV,9,1);
D:SMA(K,7,1);
J:3*K-2*D;
100,COLORWHITE,LINETHICK1;
0,COLORWHITE,LINETHICK1;
DRAWICON(FILTER(J<=REF(J,1) AND J>80,8), J*1.2,2);
DRAWICON(CROSS(J,0),1,1);