大家都知rsi 灵敏度很高，很少滞后， 但初学者慎用
源码如下：
{参数   最小  最大  缺省
M       2    99    12
N1       2    99     6  
N2       2    99    13
p        1    99     2}

LC:=REF(CLOSE,1);
RS1:=SMA(MAX(CLOSE-LC,0),M,1)/SMA(ABS(CLOSE-LC),M,1)*100;
SM:MA(RS1,20),COLORFF00FF,NODRAW;
SU:SM+2*STD(RS1,20),COLORFFFF00,NODRAW;
SD:SM-2*STD(RS1,20),COLOR00FF00,NODRAW;
ATR:=MA(MAX(MAX((RS1-RS1),ABS(REF(RS1,1)-RS1)),ABS(REF(RS1,1)-RS1)),15);
VM:MA(RS1,N1),COLORFF00FF,NODRAW;
VU:VM+2.3*ATR,COLORFFFFFF,NODRAW;
VD:VM-2.1*ATR,COLOR00FFFF,NODRAW;
DRAWBAND(SU,RGB(140,150,140),SD,RGB(0,150,130));
DRAWBAND(VU,RGB(0,224,224),VD,RGB(220,220,220));
DRAWTEXT(ISLASTBAR AND RSI>REF(RSI,1),VM,' ▲'),COLORDD00FF;
DRAWTEXT(ISLASTBAR AND RSI<REF(RSI,1),VM,' ▼'),COLOR00EE00;
超买:70,COLORBLUE,LINETHICK1;

超卖:30,COLORWHITE,LINETHICK2;

MA1:MA(RS1,N1),COLORCYAN;
MA2:MA(RS1,N2),COLORCYAN,LINETHICK1;
RSI:RS1,COLORRED,LINETHICK2;



{RSI划线}
OB:=RS1;
A1:=REF(OB,P)=HHV(OB,2*P+1);
B1:=FILTER(A1,P);
C1:=BACKSET(B1,P+1);
D1:=FILTER(C1,P);{高点}
A2:=REF(OB,P)=LLV(OB,2*P+1);
B2:=FILTER(A2,P);
C2:=BACKSET(B2,P+1);
D2:=FILTER(C2,P);{低点}

T11:=BACKSET(ISLASTBAR,BARSLAST(D2)+1);
U11:=T11>REF(T11,1);
上升趋势线:DRAWLINE(D2,OB,U11,OB,1),COLORYELLOW,LINETHICK2;

下降趋势线:DRAWLINE(RS1>=HHV(RS1,10),RS1,RS1<=LLV(RS1,3),HHV(RS1,3),1),COLORBLUE,LINETHICK2;