通达信自动划趋势线公式
说明：本指标滞后，所以针对的是中线趋势的把握。
KU1:=IF(HIGH=HHV(HIGH,3),1,0);
KD1:=IF(LOW=LLV(LOW,3),1,0);
UL:=IF(REF(KU1,2)=1 AND REF(KU1,1)=0
AND KU1=0,REF(HIGH,2),REF(HIGH,2+BARSLAST(REF(KU1,2)=1
AND REF(KU1,1)=0 AND KU1=0)));
DL:=IF(REF(KD1,2)=1 AND REF(KD1,1)=0
AND KD1=0,REF(LOW,2),REF(LOW,2+BARSLAST(REF(KD1,2)=1
AND REF(KD1,1)=0 AND KD1=0)));
HV:=H>UL AND H>REF(H,1) ;
LV:=L<DL AND L<REF(L,1) ;
GP:=BARSLAST(HV);
DP:=BARSLAST(LV);
IP:=IF(GP=0,DP,GP)>3;
HV1:=HV AND IP AND H>=HHV(H,BARSLAST(LV));
LV1:=LV AND IP AND L<=LLV(L,BARSLAST(HV));
DRAWLINE(LV1,LOW,HV1, HIGH,0),COLORGRAY;
DRAWLINE(HV1,HIGH,LV1, LOW,0),COLORGRAY;
