[R] cat() to STDERR

[Peter Dalgaard]

ivo welch wrote:
> Dear R wizards---I read Brian Ripley's post from 2004 which said that
> it was not possible to print to STDERR.  Alas, I have more modest
> needs.  I was wondering if it was possible to just send a string to
> STDERR with cat() while in CMD BATCH mode.
>
> Is it not possible to open STDERR in R?  (Or does R use STDERR for
> itself and redirect it into the output stream?)
>
> This would be on a standard Unix (gentoo) system and R 2.4.x.
>
>   
$ echo 'sink(stderr());cat("Goodbye, cruel World!\n");sink()' | R -q
--vanilla 2> tictactoe
> sink(stderr());cat("Goodbye, cruel World!\n");sink()
$ cat tictactoe
Goodbye, cruel World!

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
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