{自动画通道}
 
UR:=10;LR:=10;
 TC1:=IF(H=HHV(H,1*UR),H,DRAWNULL);
 TC2:=CONST(BARSLAST(TC1=H))+1;
 UPPER:=CONST(IF(TC2=1,H,REF(H,TC2-1)));
 BC1:=IF(L=LLV(L,1*LR),L,DRAWNULL);
 BC2:=CONST(BARSLAST(BC1=L))+1;
 LOWER:=CONST(IF(BC2=1,L,REF(L,BC2-1)));
 LP:=CURRBARSCOUNT<=BC2 AND L=LOWER;{低点定位}
 HP:=CURRBARSCOUNT<=TC2 AND H=UPPER;{高点定位}
 NOD:=(IF(TC2>BC2,TC2,BC2)-IF(TC2>BC2,BC2,TC2));{用时}
 LR1:=FORCAST(C,NOD+1);
 NP:=IF(CURRBARSCOUNT<=MAX(BC2,TC2),CONST(IF(MIN(TC2,BC2)=1,LR1,REF(LR1,MIN(TC2,BC2)-1))),DRAWNULL);{近点}
 LR2:=SLOPE(C,NOD+1);
 LR3:=CONST(IF(MIN(TC2,BC2)=1,LR2,REF(LR2,MIN(TC2,BC2)-1)));
 FP:=NP-LR3*(NOD);{远点}
 EQU:=(NP+FP)/2;
 AD:=ABS(NP-FP);{高差}
 DBL:=BARSLAST(BC1!=DRAWNULL)+1;
 DBH:=BARSLAST(TC1!=DRAWNULL)+1;
 BSP:=IF(BC2>TC2,DBL,DBH)-3;
 BSPP:=IF(BC2>TC2,DBL,DBH)+3;
 LRL:=IF(NP>FP,FP+AD/NOD*BSP,FP-AD/NOD*BSP);
 LRLL:=IF(NP>FP,FP+AD/NOD*BSPP,FP-AD/NOD*BSPP);
 AT1:=IF(BETWEEN(CURRBARSCOUNT,BC2,TC2) AND H>LRL,H,LRL);
 AT2:=HHV(AT1-LRL,MAX(BC2,TC2));
 AT3:=CONST(BARSLAST(AT1-LRL=AT2));
 AT4:=CONST(IF(AT3=0,H,REF(H,AT3)));
 AT5:=CONST(IF(AT3=0,AT1-LRL,REF(AT1-LRL,AT3)));
 ATL:=LRL+AT5;
 UT1:=IF(BETWEEN(CURRBARSCOUNT,BC2,TC2) AND L<LRL,L,LRL);
 UT2:=HHV(LRL-UT1,MAX(BC2,TC2));
 UT3:=CONST(BARSLAST(LRL-UT1=UT2));
 UT4:=CONST(IF(UT3=0,H,REF(H,UT3)));
 UT5:=CONST(IF(UT3=0,LRL-UT1,REF(LRL-UT1,UT3)));
 UTL:=LRL-UT5;
 RH:=IF(CURRBARSCOUNT>=MIN(BC2,TC2)-1,ATL,CONST(REF(ATL,MIN(BC2,TC2)-1)));{限制高}
 RL:=IF(CURRBARSCOUNT>=MIN(BC2,TC2)-1,UTL,CONST(REF(UTL,MIN(BC2,TC2)-1)));{限制低}
 
上:IF(NP>FP,IF(LRLL<=RH,LRLL,DRAWNULL),IF(LRLL>=RL,LRLL,DRAWNULL)),COLOR628962;
 中:IF(NP>FP,IF(LRL<=RH,LRL,DRAWNULL),IF(LRL>=RL,LRL,DRAWNULL)),COLOR628962;
 下:中-(上-中),COLOR628962;
 上上:上+(上-中),COLOR628962,DOTLINE;
 下下:下-(中-下),COLOR628962,DOTLINE;