Vladimir Eremeev wrote:
>
> For me, the simplest way to find, what is wrong, would be tracing the R
> code:
>
> library(debug)
> mtrace(cph)
> cph(Surv(time.sur, status.sur)~ strat(colon[,13])+colon[,18]
> +colon[,20]+colon[,9], surv=TRUE)
>
> ... then find the place of the error and analyze how to adjust the
> function call arguments to avoid the error and get the desired result.
>
and then, switch off the tracing
mtrace(cph,FALSE)
or
mtrace.off()
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