[R] Intercept in Model Matrix (Parameters not what I expected)

I have something which has been bugging me and I have even asked this on cross validated but I did not get a response. Let's construct a simple example. Below is the code. A<-gl(2,4) #factor of 2 levels B<-gl(4,2) #factor of 4 levels df<-data.frame(y,A,B) As you can see, B is nested within A. Th

Re: [R] problem concernig Survsplit, package survival

> On Aug 20, 2016, at 1:31 PM, Jeff Newmiller wrote: > > Your link did not take me to the code you reference... Google does not make > entire books available online which may have something to do with my > difficulty. This is one reason the Posting Guide asks you to post a > self-contained,