On 06/05/2012 11:32 AM, Prof Brian Ripley wrote:
On 05/06/2012 16:17, Terry Therneau wrote:
I was looking at how the model.frame method for lm works and comparing
it to my own for coxph.
The big difference is that I try to retain xlevels and predvars
information for a new model frame, and lm d
On 05/06/2012 16:17, Terry Therneau wrote:
I was looking at how the model.frame method for lm works and comparing
it to my own for coxph.
The big difference is that I try to retain xlevels and predvars
information for a new model frame, and lm does not.
I use a call to model.frame in predict.coxp
