[R] power regression: which package?

[Kjetil Halvorsen]

?nls
install.packages("nls2",dep=T)
library(nls2)
?nls2
install.packages("nlstools")
library(help=nlstools)
install.packages("NISTnls", dep=T)
library(help=NISTnls)

the last one give access to many examples.

On Wed, Mar 2, 2011 at 1:55 PM, David Croll <david.croll at gmx.ch> wrote:
>
>
> Dear R users and R friends,
>
>
> I have a little problem... I don't know anymore which package to use if
> I want to perform a power regression analysis.
>
>
> To be clear, I want to fit a regression model like this:
>
> fit <- ....(y ~ a * x ^ b + c)
>
> where a, b and c are coefficients of the model.
>
>
> The R Site does not have the answer I want...
>
>
> Thanks in advance and with kind regards,
>
>
> David
>
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