[R] System crash when using surv=T in cph

[Uwe Ligges]

maxb wrote:
> Can someone help me. I am very new to R. I am fitting a Cox model using Frank
> Harrell's cph as I want to produce a Nomogram. This is what I have done:
> 
> Srv<- Surv(time,cens)
> f.cox<- cph(Srv~ v1+v2+v3+v4, x=T, y=T, surv=T)

This is not reproducible for us. Where are the data?
What is cph? I presume the one from package Design?

> As soon as I press enter, Windows XP crashes. If I remove surv=T, then it
> works. I have R version 2.9.0.

Have you updates all your packages? Which versions of survival and 
Design are you using?
Is it really Windows that crashes, or just R?


See
http://cran.r-project.org/web/checks/check_results_Design.html
to learn that even the newest version of Design produces WARNINGs.
If you can send reproducible code to let R crash, please send it to the 
package maintainer of the involved packages.

Best,
Uwe Ligges



> Is there a way of displaying the parameter estimates (ie beta coefficients)
> and HR when I type 
> anova(f.cox) as this only displays the Chi squared and p-values.
> Any help or advise drawing a Nomogram will be appreciated.
> 
> Thanks in advance
> 
> Max