一个很准确的短线选股指标，绝无未来函数

红线上穿买:=REVERSE(VD)+100,COLORRED;
RSV:=(((CLOSE - LLV(LOW,9)) / (HHV(HIGH,9) - LLV(LOW,9))) * 100);
K:=SMA(RSV,3,1);
D:=SMA(K,3,1);
J:=3*K-2*D;
X:=LLV(J,2)=LLV(J,8);
AA:=DRAWTEXT(CROSS(J,REF(J+0.01,1)) AND X AND J 19,红线上穿买*0.9,'短'),COLORLIRED;
IF(AA,1,0);