Read ?nls and note the "trace" argument. Does nls(...,trace = TRUE)
not do what you want? By using ?capture.output you could then capture the trace I would think, but I haven't tried. Cheers, Bert Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." H. Gilbert Welch On Fri, May 9, 2014 at 6:41 AM, Jun Shen <[email protected]> wrote: > Hi everyone, > > I am using nls() to run a simple sigmoid curve type of regression and > would like to see how the parameter values change through iterations. How > can I see those values? Or ideally, can I even extract those values? > > For example, > > nls(Response~E0+Emax*Conc/(EC50+Conc), data=data, start=list(....)) > > I would like to see how Emax and EC50 values change through iterations. > Thanks. > > Jun > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] 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. ______________________________________________ [email protected] 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.
