On 25-10-2013, at 17:29, Tom Wright <t...@maladmin.com> wrote: > Hi, > Can anyone explain why the nls function is giving an error? > Thanks > Tom > >> head(d) > age time > 1 23.566667 223.0 > 2 42.633333 223.0 > 3 62.300000 222.0 > 4 32.933333 220.5 > 5 9.366667 228.0 > 6 23.833333 227.0 > >> fit<-nls(d$time~a1*exp(b1*d$age) + > a2*exp(b2*d$age)+c > ,start(a1=10,b1=0,a2=250,b2=1,c=0)
This line should read: start=list(a1=10,b1=0,a2=250,b2=1,c=0) Berend > ,trace=T) > Error in hasTsp(x) : argument "x" is missing, with no default > > ______________________________________________ > 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.
