上升（下降）通道自动划线

hh:=hhv(h,0);
hhh:=h;
aa:=BARSLAST(h=hh);
ba:=datacount-aa;
ja:=1;
tm1:=999999;
for i1=ba+1 to datacount do begin
    k1:=(hh-hhh)/ja;
  if k1     tm1:=k1;
    ts1:=ja;
  end;
  ja:=ja+1;
end;
A1:LINEVALUE(h=hh and aa=0,h,BARPOS=datacount-aa+ts1,h,0,0),colorffff54;
cha:=hhv(abs(l-a1),aa);
A2:a1-cha,colorffff54;
AI:a1-cha/2,colorffff54,LINEDASH;

ll:=llv(l,0);
lll:=l;
a3:=BARSLAST(l=ll);
b3:=datacount-a3;
j3:=1;
tm3:=999999;
for i3=b3+1 to datacount do begin
    k3:=(lll-ll)/j3;
  if k3     tm3:=k3;
    ts3:=j3;
  end;
  j3:=j3+1;
end;
B1:LINEVALUE(l=ll and a3=0,l,BARPOS=datacount-a3+ts3,l,0,0),color5454ff;
chb:=hhv(abs(h-b1),a3);
b2:b1+chb,color5454ff;
bi:b1+chb/2,color5454ff,LINEDASH