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RE: Non linear fit in octave

From: Ted Harding
Subject: RE: Non linear fit in octave
Date: Thu, 20 Aug 1998 18:12:28 +0100 (BST)

On 20-Aug-98 Francesco Potorti` wrote:
> Hi, I  would  like to   fit some one-dimensional   data  to a  nonlinear
> function, namely Y=v.*X.^(2*h), where I want to find v and h.
> I found,  but
> it uses a leastsq function that, it seems, does all the job.  I guess it
> is a standard function of matlab.  So I'm stuck.  Any suggestions?

Is there a reason for not taking logs and doing an ordinary (least sqaures)
regression of W = a + b*U where W=log(Y), U=log(X), a=log(v), b=log(2*h)?


E-Mail: (Ted Harding) <address@hidden>
Date: 20-Aug-98                                       Time: 18:12:28

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