通达信RSI+BOLL指标公式

N1:=6;N:=20;
LC:=REF(CLOSE,1);
rsi1:SMA(MAX(CLOSE-LC,0),N1,1)/SMA(Abs(CLOSE-LC),N1,1)*100;
boll:MA(RSI1,N);
UB:BOLL+2*STD(RSI1,N);
LB:BOLL-2*STD(RSI1,N);