{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;