Dear R users, I’m using the constrOptim.nl<http://constrOptim.nl> to carry out non-linear fit with constraints between experimental and modelled data. As far as I understand the parameter “fval" indicates the goodness of this fit. My first question is: Is the fval parameter similar to commonly used chi^2 parameter? Second: if you’d need to decide which set of models best fit your experimental data by comparing the different fval values obtained, how can you use R to determine if the differences between fval values is statistically significant?
I´d appreciate your feedback. Regards. Juan C. Munoz-García [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.