maybe you should keep your NA but deal with the "na.action" option of the nls() function ?
HTH. Florence. On 10/19/05, Florent Bresson <[EMAIL PROTECTED]> wrote: > > I'm trying to run a nls on a subset of a data.frame. > In the subset, one observation is NA. So I drop the > observation but when I ask for : > > >sm <- nls(machin$revcum ~ > Lc.singh(machin$popcum,p), start=list(p=c(2,3))) > > I get : > > Erreur dans parse(file, n, text, prompt) : syntax > error in "~ " > > If I put some value for the non available observation > instead of droping it, it works. So what's the problem ? > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
