Prof Brian Ripley
ripley at stats.ox.ac.uk
Sat Apr 12 09:09:35 CEST 2003
1) You didn't need to use unix() in S-PLUS. Just
cat("Finished with page", PAGENO, "\n")
which also works in R.
2) In R you could use
system(paste("echo", "Finished with page", PAGENO))
this being a more standard way to produce output in Unix that creating a
file and piping it to cat: but you could do that if you wanted to.
(That's exactly what unix(input="foo") does: list it to see.)
On Fri, 11 Apr 2003, Dennis Fisher wrote:
> I am new to R but have used Splus for many years. When I create many
> graphics in sequence in Splus/Linux, each time that I complete a
> page, I send a message to my command line interface using the
> following function:
> FOOT <- function(PAGENO,TEXT)
> mtext(outer=T, TEXT, side=1)
> unix("cat", c(paste("Finished with page", PAGENO)),FALSE, FALSE)
> PAGENO <- PAGENO + 1
> In R, the corresponding function appears to be "system()". I don't
> see how I can pass the PAGENO argument to "cat" in R.
> Any advice?
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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