[R] constructing a self-starting non-linear model

[Peter Dalgaard]

Irene Mantzouni wrote:
> Dear all,
>  
> I am trying to define a selfStart function for a non-linear model, which is a log-transformed SSmicmen model with multiplicative errors and so it is required to make them additive:
>  
> log(y)=log(a)+log(x)-log(1+x/b)
>  
>  
> Any ideas about how to use the "peeling" method to derive the "initial" argument and get the initial values?
>  
>   
Does it not work just to reuse the SSmicmen initializer?


-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907