Re: [R] fitting a gaussian to some x,y data

From: Michael Koppelman <>
Date: Sun 27 Aug 2006 - 05:55:00 EST

Whoops, I forgot to add, many thanks to all who replied publicly and privately. I am very appreciative of all comments and suggestions. Mark Leeds was especially kind in terms of clarifying why my description of the situation was so confusing.


On Aug 26, 2006, at 2:51 PM, Michael Koppelman wrote:

> Success! The line I needed was:
> gcoeffs <-nls(y~(a/b)*exp(-(x-c)^2/(2*b^2)),start=list
> (a=0.4,b=2,c=-10), trace=TRUE)
> I also needed to provide good guesses for a, b and c. The attached
> PNG should explain what I was going after, which is the line in the
> center of that curve. I am sorry for my confusing and perhaps
> incorrect usage of terminology.
> Cheers,
> Michael mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Sun Aug 27 06:12:34 2006

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