通达信安全通道选股指标公式

 N:=20;
BOLL:=MA(CLOSE,N);
UB:=BOLL+2*STD(CLOSE,N);
LB:=BOLL-2*STD(CLOSE,N);
DD:=CLOSE>BOLL AND O>BOLL AND CLOSE<UB;
KK:=COUNT(DD,20)>=3;
KDR:=CLOSE>UB;
XG:FILTER(KK AND KDR,20);