Re: [EquisMetaStock Group] Re: Linear Regression / Linear Regression Slope Relationship

["Roy Larsen" <rlarsen@xxxxxxxxxxxxxx>]

Hi Jose

> Roy, maybe this will help:

No, not at first glance anyway. Neither LinRegInd nor LinRegSlp appear to agree with the standard
MetaStock LR and LRS values, but besidesthat I want to get away from using Cum(1). Tom has
demonstrated (if I understand his code correctly) that it's not necessary to cumulate anything from
bar one. A 21 period LR only needs the 21 most recent bars of data to calculate, surely. I reason
that LRS should not need any more bars than that either.

Thanks

Roy

> =======================
> Lin Reg Indicator/Slope
> =======================
> ---8<---------------------------
>
> { User inputs }
> plot:=Input("[1]LinReg Indicator,   [2]LinReg Slope)",1,2,1);
> pds:=Input("LinReg periods)",2,2520,21);
> 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))));
>
> { Linear Regression components }
> 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);
>
> { Linear Regression Slope }
> z:=If(z=0,.000001,z);
> LinRegSlp:=y/z;
>
> {Linear Regression Indicator (LinReg end-point)}
> LinRegInd:=LinRegSlp*Cum(1)
>  -LinRegSlp*Mov(Cum(1),pds,S)+Mov(x,pds,S);
>
> { Plot }
> If(plot=1,LinRegInd,LinRegSlp)
>
> ---8<---------------------------
>
>
> jose '-)
>
>
> --- In equismetastock@xxxxxxxxxxxxxxx, "Roy Larsen" <rlarsen@xxxx>
> wrote:
> > Hi All
> >
> > Can anyone help with the mathematical relationship between Linear
> Regression and Linear Regression
> > Slope. I have found that the formula created by Tom (Sprunger) for
> Linear Regression, using a pseudo
> > loop, to be more true to the standard Linear Regression indicator in
> MetaStock than the common LR
> > formula using a number of Cum() functions. I would like to carry
> that greater accuracy through to a
> > Linear Regression Slope indicator for plotting the weekly value on
> daily charts.
> >
> > Any assistance would be appreciated.
> >
> > Thanks
> >
> > Roy
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>




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