system()
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
FOOT(PAGENO,"Text")
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