Hello again about grofit: I've been looking at the grofit explanatory pdf, but it seems to me that it's missing a little bit of commentary as to the multiplicity of 'experiments'. For example, what is the minimum number of data points(not time points) to obtain a model? Would it be similar to the approximately 12 that we read will give us a basic regression? regards, shfets
On Mon, Mar 22, 2010 at 2:43 PM, alexander russell <ssv...@gmail.com> wrote: > Hello, > I'm trying to understand grofit's estimation of models, and fairly new to > growth models generally. The data used by grofit consists of the vector of > "experiments", that is the growth values for a vector of individuals > measured at different times. Can I understand correctly that the program > estimates parameters for the growth model based on a regression(linear or > non linear) analysis of the data at time 1 to time 2, then time 2 to time 3, > building a curve piecewise? > regards, > shfets > [[alternative HTML version deleted]] ______________________________________________ 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.