Re: [R] How to get around heteroscedasticity with non-linear least squares in R?

From: Kjetil Brinchmann Halvorsen <kjetilbrinchmannhalvorsen_at_gmail.com>
Date: Wed 22 Feb 2006 - 09:31:10 EST

Quin Wills wrote:
> I am using "nls" to fit dose-response curves but am not sure how to approach
> more robust regression in R to get around the problem of the my error
> showing increased variance with increasing dose.
>

package "sfsmisc" has rnls (robust nls) which might be of use.

Kjetil

>
>
> My understanding is that "rlm" or "lqs" would not be a good idea here.
> 'Fairly new to regression work, so apologies if I'm missing something
> obvious.
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Feb 22 09:35:23 2006

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