Re: [R] Random effects in package mgcv

2016-04-28 Thread Simon Wood
If you want to include random intercepts in a model fit by bam/gam, then include s(g,bs="re") in the model formula, where g is a factor variable with one level for each group requiring a random intercept. Now suppose that for each level of group g you want a random slope w.r.t. x. You should

[R] Random effects in package mgcv

2016-04-27 Thread Dean Force
Hello R users, I have a quick question I was hoping to get your input on. I am new to R and the smooth statistical regression world, and am trying to wrap my mind around the issues concerning using splines for mixed effect modeling. My question is the following: in the ‘gamm’ function,