Re: regarding accuracy of fit

[Martijn]

Hi,
Please make clear what your model, is wat your data set and what the
problem. The accuracy can be judged from the stdresid, Z and r2 outputs
of leasqr.

Martijn

On Tue, 2011-07-19 at 09:58 +0200, preeti gaikwad wrote:
> yes I am using leasqr only to fit my curve so u mean if I use leasqr
> then I donot need to calculate residual???? I am not getting u.....
> 
> On 19 July 2011 09:54, Martijn <address@hidden> wrote:
>         Hi,
>         You are not exactly clear, but I have the impression that you
>         should
>         look into the leasqr command of the optim package.
>         
>         Martijn
>         
>         P.S. leasqr in optim 1.0.16 is broken, at least in combination
>         with
>         octave 3.4. Version 1.0.12 works icw octave 3.2.
>         
>         
>         
>         On Mon, 2011-07-18 at 18:18 +0200, preeti gaikwad wrote:
>         > Hello, PLease help me to calculate the accuracy of the fit?
>         suppose I
>         > have the value of y from the experimental data and value of
>         f from the
>         > fit now I want to know the best fit?
>         >
>         > I am doing that suppose R=y-f;
>         > and then ploting R with x values this is giving the correct
>         result but
>         > I HAVE TOO much data to handle so I am getting a fluctuation
>         with
>         > straight line??? not getting what tto do??
>         > thanks in advance for help
>         >
>         > --
>         >
>         
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>         
> 
> 
> 
> -- 
> preeti gaikwad