Displaying 1 result from an estimated 1 matches for "td2234209".
2012 Apr 02
1
gamm: tensor product and interaction
...of about 70000 rows and 110 levels for Group
in order to test whether tensor product smooths vary across factor levels. I was wondering if comparing those two models would be enough to conclude? I saw a preceding post on similar issues
http://r.789695.n4.nabble.com/Comparing-and-Interpreting-GAMMs-td2234209.html
but that example used simple s() smooths instead of tensor product smooths. In this case, the person was comparing between model A and model A1 like:
A<-gamm4(Z~factor+s(x)+s(x,by=factor) ,data=DATA, random=~(1|Group))
A1<- gamm4(Z~factor+s(x) ,data=DATA, random=~(1|Group))
I thus also...