Re: nonlinear regression
- From: Richard Ulrich <Rich.Ulrich@xxxxxxxxxxx>
- Date: Tue, 26 Apr 2005 12:32:35 -0400
On 25 Apr 2005 05:50:13 -0700, orangeKDS@xxxxxxx wrote:
> I need to find formula for this graph:
>
> http://qrange.150m.com/misc/plot.htm
>
>
> What is good program for nonlinear regression that could help me?
>
> At the moment, I'm using this formula:
> Y*X=22,5
>
> or
> I*V=22,5 Watt
>
> but its not very precise.
>
>
> BTW, I'm a total newbie.
> It seems that all programs require knowledge of function form and then
> they calculate parameters, right? So what form should I use?
Well, linear is easier than non-linear.
log(Y) = b*log(X) + c
- is the obvious form for a linear regression.
--
Rich Ulrich, wpilib@xxxxxxxx
http://www.pitt.edu/~wpilib/index.html
.
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- From: orangeKDS
- nonlinear regression
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