Re: [R] estimation of parameters with grofit

2010-03-23 Thread alexander russell
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 a

[R] estimation of parameters with grofit

2010-03-22 Thread alexander russell
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 e