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Preston
I forget what the original request was but I'm thinking that the line to be
truncated started 20 bars before a particular point and finished 8 bars
after it. That's a total of 28 bars (20+8). It looks to me that your lines
are only 12 bars long (20-8).
It seems to me that Signal2 is displaced backwards rather than forwards. I
may have it all wrong. If the beginning and/or end bars of the lines are
miscalculated then everything else is going to fail.Get the timing right
before worrying about how to calculate the numbers.
Roy
----- Original Message -----
From: "pumrysh" <no_reply@xxxxxxxxxxxxxxx>
To: <equismetastock@xxxxxxxxxxxxxxx>
Sent: Wednesday, September 10, 2003 9:34 AM
Subject: [EquisMetaStock Group] Re: Trace a line
> Roy,
>
> Thanks! So far the formula that I have come up with doesn't quite get
> it... but its close. The problem, I think, is with the slope
> calculation. Should be easy enough to subtract the value of the slope
> from the oldest high and plot forward but so far its eluding me. I
> know that I could use an if statement but I was hoping for a variable
> input.
>
> Preston
>
> {BarBack DescendView}
> len:=Input("Periods for Ref High",1,100,20);
> Signal:=Ref(H,-len);
> Barbk:=Input("Barsback High",1,100,8);
> Signal2:=Ref(H,-Barbk);
> {Periods:=len;} {periods to display last value}
> {Line Plot }
> D1:=Cum(1)=LastValue(Cum(1))-LastValue(len);
> {D1 is first bar of line}
> D2:=Cum(1)=LastValue(Cum(1))-LastValue(len)-(barbk);
> {D2 is last bar of line}
> P1:=signal2; {start-of-line data array}
> P2:=signal; {end-of-line data array}
> V1:=ValueWhen(1,D1,P1);
> V2:=ValueWhen(1,D2,P2);
> B1:=LastValue(BarsSince(D1));
> B2:=LastValue(BarsSince(D2));
> Line:=V1-Cum(If(D1=0,(v1/v2)-(b1/b2),0));
> Line:=Ref(Ref(line,-barbk),barbk); {blank end of line}
> Line;
> aLine:=v1-Cum(If(D1=0,(b1*v1)/(b2*v2),0));
> aLine:=Ref(Ref(aline,-barbk),barbk); {blank end of line}
> aLine;
>
>
>
>
>
> --- In equismetastock@xxxxxxxxxxxxxxx, "Roy Larsen" <rlarsen@xxxx>
> wrote:
> > Hi Preston
> >
> > I have three line versions in MS. At least one of these is Jose's
> and the
> > other two have had some input from him. I trust you can extract
> some ideas
> > from one of these formulas.
> >
> > Roy
> >
> > {RL Draw Line}
> > D1:= DayOfMonth()=3 AND Month()=10 AND Year()=2001; {example}
> > D2:= DayOfMonth()=22 AND Month()=10 AND Year()=2001;
> > P1:=C; {beginning price formula}
> > P2:=C; {ending price formula}
> > V1:=ValueWhen(1,D1,P1);
> > V2:=LastValue(ValueWhen(1,D2,P2));
> > B1:=LastValue(BarsSince(D1));
> > B2:=LastValue(BarsSince(D2));
> > Bp:=LastValue(B2);
> > Line:=V1-Cum(If(D1=0,(V1-V2)/(B1-B2),0));
> > Line:=Ref(Ref(Line,-Bp),Bp); {blank end of line}
> > Line;
> >
> > {Draw Line Version 1.1}
> > Date1:= DayOfMonth()=3 AND Month()=10 AND Year()=2001;
> > Date2:= DayOfMonth()=22 AND Month()=10 AND Year()=2001;
> > Date3:= DayOfMonth()=22 AND Month()=10 AND Year()=2001;
> > P1:=C; {beginning price formula}
> > P2:=C; {ending price formula}
> > P3:=H; {ending price formula second line}
> > V1:=ValueWhen(1,Date1,P1);
> > V2:=LastValue(ValueWhen(1,Date2,P2));
> > V3:=LastValue(ValueWhen(1,Date3,P3));
> > B1:=LastValue(BarsSince(Date1));
> > B2:=LastValue(BarsSince(Date2));
> > B3:=LastValue(BarsSince(Date3));
> > Bp:=LastValue(B2);
> > Bp1:=LastValue(B3);
> > Line1:=V1-Cum(If(Date1=0,(V1-V2)/(B1-B2),0));
> > Line1:=Ref(Ref(Line1,-Bp),Bp);
> > Line2:=V1-Cum(If(Date1=0,(V1-V3)/(B1-B3),0));
> > Line2:=Ref(Ref(Line2,-Bp),Bp);
> > Line1; Line2;
> >
> >
> > {JS Draw Lines}
> > {define events}
> > time1:= DayOfMonth()=1 AND Month()=3 AND Year()=2001;
> > time2:= DayOfMonth()=26 AND Month()=2 AND Year()=2002;
> > price1:=C;
> > price2:=C;
> > {restrict to last events}
> > time1:=time1 AND Cum(time1)=LastValue(Cum(time1));
> > time2:=time2 AND Cum(time2)=LastValue(Cum(time2));
> > {sort events}
> > e1pds:=LastValue(BarsSince(time1));
> > e2pds:=LastValue(BarsSince(time2));
> > x1:=If(e1pds>e2pds,time1,time2);
> > x2:=If(e1pds>e2pds,time2,time1);
> > y1:=If(e1pds>e2pds,price1,price2);
> > y2:=If(e1pds>e2pds,price2,price1);
> > {fix coordinates}
> > y1:=ValueWhen(1,x1,y1);
> > y2:=LastValue(ValueWhen(1,x2,y2));
> > b1:=LastValue(BarsSince(x1));
> > b2:=LastValue(BarsSince(x2));
> > plot:=y1+BarsSince(x1)*(y2-y1)/(b1-b2);
> > plot:=Ref(Ref(plot,-b2),b2);
> > plot;
> >
> >
> > > Roy & Scoub,
> > >
> > > Starting playing around with several of the formulas that Roy has
> > > posted. What I have initially come up with is a horizontal view of
> > > the high 20 bars ago that is constant for the next 12 bars.
> Meaning
> > > that the display extends from 20 bars ago to 8 bars ago and is
> > > constant.
> > >
> > > Since the original question was for a line from one high to the
> next
> > > I am assuming it would be an declining trendline. To do this we
> > > incorporate the slope and subtract its value from the line each
> day
> > > forward. This is where I'm stumped. Any suggestions?
> > >
> > > {BarBack View}
> > > len:=Input("Periods for Ref High",1,100,20)-1;
> > > Signal:=Ref(H,-len);
> > > Barbk:=Input("Barsback High",1,100,8)-1;
> > > Signal2:=Ref(H,-Barbk);
> > > Slope:=(Signal-Signal2)/(len-Barbk);
> > > Periods:=len; {periods to display last value}
> > > LastBar:=Cum(1)=LastValue(Cum(1)-(Periods));
> > > bacdis:=ValueWhen(1,LastBar,LastValue(Signal));
> > > {blank right side of line}
> > > Line:=Ref(Ref(bacdis,-Barbk),Barbk);
> > > line{end}
> > >
> > >
> > > Preston
> > >
> > >
> > >
> > > To unsubscribe from this group, send an email to:
> > > equismetastock-unsubscribe@xxxxxxxxxxxxxxx
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
>
>
>
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