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Roy had posted a method to "terminate" the plotting of a trendline.
I will post just the relevant code.
Please use it to suit your need. This code plots the ROC and a
trendline on the ROC.
==================================
{Line Plot on ROC}
D:=Input("Line Length",48,52,50);
F:=Input("Roc Periods",5,99,20);
A:=ROC(C,F,%);
B:=BarsSince(A=Highest(A));
D1:=Cum(1)=LastValue(Cum(1))-LastValue(B);
{D1 is first bar of line}
D2:=Cum(1)=LastValue(Cum(1))-LastValue(B)+D;
{D2 is last bar of line}
P1:=A; {start-of-line data array}
P2:=A; {end-of-line data array}
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));
{THIS PORTION IS WHAT YOU'RE LOOKING FOR}
Line:=Ref(Ref(Line,-Bp),Bp); {blank end of line}
A; {Rate of Change}
Line;
========================
And don't thank me, thank Roy. :-)
Dusant
--- In equismetastock@xxxxxxxxxxxxxxx, "Scoubidoo \(Alain\)"
<scoubidoo@xxxx> wrote:
> Hi,
>
> I'd like to trace a line between 2 tops.
>
> Those tops are from "high -20 days before" to " high-8 days
before".
>
> I only know a formula to trace a line until yesterday's high. But
i'd
> like to stop the line, many days before, yesterday's high.
>
> How should I construct the formula ?
>
> Regards,
>
> Scoubidoo.
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