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以下是通达信完美趋势源码主图（无源码的请下载附件导入）
经典指标_完美趋势，取自本坛，本人在用，用到未来函数，看趋势一流，不喜欢未来函数的可以不用，这里说一下未来函数可是好东东呀！！！！
{完美趋势 P 5 50 30 N 1 100 8}
HV1:=REF(H,P)=HHV(H,2*P+1);
HV2:=FILTER(HV1,P);
HV3:=BACKSET(HV2,P+1);
HV4:=FILTER(HV3,P);
R11:=BACKSET(ISLASTBAR,BARSLAST(HV4)+1);
S11:=R11>REF(R11,1);
BOH:DRAWLINE(HV4,H,S11,H,1),COLORBLUE;
AA2:=REF(L,P)=LLV(L,2*P+1);
BB2:=FILTER(AA2,P);
CC2:=BACKSET(BB2,P+1);
DD2:=FILTER(CC2,P);
T11:=BACKSET(ISLASTBAR,BARSLAST(DD2)+1);
U11:=T11>REF(T11,1);
BOL:DRAWLINE(DD2,L,U11,L,1),COLORRED;
BOV:=L<=BOL AND C>BOL;
DRAWICON(BOV,L,1);
M:=INTPART(3*N/5);
AAA:=REF(H,M)=HHV(H,2*M+1);
QYY:=BACKSET(AAA,M+1);
CCC:=FILTER(QYY,M) AND H=HHV(H,M+1);
DDDD:=BARSLAST(CCC),NODRAW;
GDTSS:=IF(CCC,CURRBARSCOUNT,0);
DINGBUTSS:=IF(DDDD,REF(GDTSS,DDDD),GDTSS);
GDCS11:=CONST(DINGBUTSS);
DINGBUTS11:=REF(DINGBUTSS,DDDD+1);
GDCS22:=CONST(DINGBUTS11);
AA11:=REF(L,M)=LLV(L,2*M+1);
QY11:=BACKSET(AA11,M+1);
CC11:=FILTER(QY11,M) AND L=LLV(L,M+1);
DD11:=BARSLAST(CC11);
DDTSS:=IF(CC11,CURRBARSCOUNT,0);
DDTS11:=IF(DD11,REF(DDTSS,DD11),DDTSS);
DDCS11:=CONST(DDTS11);
DDTS22:=REF(DDTS11,DD11+1);
DDCS22:=CONST(DDTS22);
线1:DRAWLINE(CURRBARSCOUNT=GDCS22,H,CURRBARSCOUNT=GDCS11,H,1),COLORFFAA99,LINETHICK1;
线2:DRAWLINE(CURRBARSCOUNT=DDCS22,L,CURRBARSCOUNT=DDCS11,L,1) COLOR9966FF,LINETHICK1;
预报:H>=线1 AND REF(H<线1,1),NODRAW; 预警:L<=线2 AND REF(L>线2 ,1),NODRAW;
STICKLINE(预报,O,C,3,0),COLOR00FFFF; STICKLINE(预警,O,C,3,0),COLORFF0033;
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