Re: [R] Centering multi-level unordered factors

2013-10-07 Thread David Winsemius
On Oct 7, 2013, at 4:52 PM, Robert Lynch wrote: > I have a question I am not even sure quite how to ask. > > When r fits models with un-ordered categorical variables as predictors > (RHS of model) it automatically converts them into 1 less dichotomous > variables than there are levels. > > For

[R] Centering multi-level unordered factors

2013-10-07 Thread Robert Lynch
I have a question I am not even sure quite how to ask. When r fits models with un-ordered categorical variables as predictors (RHS of model) it automatically converts them into 1 less dichotomous variables than there are levels. For example if I had levels(trait) = ("A","B","C") it would automa