zia207 wrote:
>
> Is it possible to get r^2 value of "SSasymp" non-linear regression
> model in R.
>
>
See Douglas Bates' comments why the lack of r^2 is a feature, not a bug:
http://www.ens.gu.edu.au/ROBERTK/R/HELP/00B/0399.HTML
Dieter
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