On Thursday 01 March 2007 08:38, Dacha Atienza wrote: > I want to do this model using mgcv > > caco1.gam<-gam(caco1$Pa~s(caco1$T10)+s(caco1$S10)+s(caco1$C10), data=caco1) > But I want to indicate the degrees of freedom of each term, how I have to > do it? e.g. s(caco1$T10,k=6,fx=TRUE) will give you a 5 DoF term. (Alternatively you can supply smoothing parameters directly to gam, which ultimately control the termwise DoFs.)
> > Then, I saw that always the results refered to positive interactions, there > are not negative ones? - I don't understand this question. If you specifiy an interaction with something like te(x,z) then the effect of the response could be positive or negativedepending on the values of x and z. Simon -- > Simon Wood, Mathematical Sciences, University of Bath, Bath, BA2 7AY UK > +44 1225 386603 www.maths.bath.ac.uk/~sw283 ______________________________________________ [email protected] 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.
