Re: [R] lme, nlsList, nlsList.selfStart

2006-02-17 Thread Spencer Graves
Have you tried making mydata2$Dose the same length as everything else? spencer graves Patrick Giraudoux wrote: Well, right, Dose was indeed in the global environment and not in the data.frame. Changing it with mydata2$Dose-100 # the real dose at the beginning of the

[R] lme, nlsList, nlsList.selfStart

2006-02-11 Thread Patrick Giraudoux
Dear listers, I am trying to fit a model using nlsList() using alternately a SSfol() selfstart function or its developped equivalent formulae. This preliminary trial works well mydata-groupedData(Conc~Tps|Organ,data=mydata) mymod1-nls(Conc~SSfol(Dose,Tps,lKe,lKa,lCl),data=mydata) as well as a