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The more data you have in your linear regression, the more accurate
it is able to draw the slope and therefore the more accurate the
slope is at determining the rate of change. The formula I sent is
correct. You have to make sure you've got the right values for all of
your variables. Metastock's formula only allows you to change the
periods. The rest is automatic to prevent this problem.
Good luck.
--- In Metastockusers@xxxxxxxxxxxxxxx, "Jose" <josesilva22@xxxx>
wrote:
>
> Ok, I've fixed the 2-period LinReg issue, but now there are
> discrepancies with the MetaStock LinReg Indicator, noticeable at
> shorter periods.
>
> It seems to me that my version is the correct one.
>
> Feedback, please?
>
> j '-)
>
>
> LinReg Indicator/Slope formula
> ==============================
>
> ---8<-------------------------
>
> {©Copyright 2003 Jose Silva}
> {josesilva22@xxxx}
>
> pds:=Input("LinReg periods)",2,2520,5)-1;
> plot:=Input("plot: Indicator=1, Slope=2",1,2,1);
> x:=Input("use Open=1, High=2, Low=3, Close=4, Volume=5",1,5,4);
> x:=If(x=1,O,If(x=2,H,If(x=3,L,If(x=4,C,V))));
>
> y:=pds*Sum(Cum(1)*x,pds)
> -Sum(Cum(1),pds)*Sum(x,pds);
> z:=pds*Sum(Pwr(Cum(1),2),pds)
> -Pwr(Sum(Cum(1),pds),2);
> z:=If(z=0,.000001,z);
>
> LRS:=y/z;
> LR:=
> LRS*Cum(1)-LRS*Mov(Cum(1),pds,S)+Mov(x,pds,S);
>
> If(plot=1,LR,0);
> If(plot=1,LR,LRS)
>
> ---8<-------------------------
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