gb at stat.umu.se
Fri Nov 20 18:30:55 CET 1998
I must admit that I don't fully appreciate the scoping rules in R.
myfunc <-function(tt, event, x)
coxph(Surv(tt, event) ~ x)
R> myfunc(c(1:4), rep(1, 4), c(1,0,1,0))
gives as output:
1 2 3 4
Error: Object "tt" not found
i.e., cat "sees" tt, but not coxph. Why?
How do I call coxph within a function, with arguments
being local or formal parameters? Is it possible to write
R functions so that the scopning rules will be as in Fortran
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