KDJ指标金叉买入信号,适用于短线选股
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; 金叉:CROSS(K,D) AND K<30; 选股:金叉;