?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.cr...@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 > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
