Please reply to me directly since I don't subscribe to this list.
I am using an Imac, to which I am relatively new, and have
encountered somewhat puzzling behaviour.
I wrote a script to source in order to do a simulation, and put in a
``cat'' statement in a for-loop to
let me know how things were progressing. The strange behaviour was
that the output from the
``cat()s'' seemed to be buffered, and did not appear on the screen
until the whole procedure
completed. Which is pretty useless.
The funny thing is I'm pretty sure that I did exactly the same thing
last week, and the buffering
behaviour did not occur. I don't *think* I changed any settings, but
something must have changed.
Can anyone suggest how I might change things back or otherwise over-
ride the buffering.
I tried putting in a call to flush.console(), but that has no effect.
The output from sessionInfo() is as follows:
R version 2.5.0 (2007-04-23)
i386-apple-darwin8.9.1
locale:
C
attached base packages:
[1] "stats" "graphics" "grDevices" "utils" "datasets"
"methods"
[7] "base"
other attached packages:
misc
"0.0-1"
One other thing: If I replace the cat() statements by print()
statements, then the buffering
does not seem to occur. This strikes me as very weird.
Here is a toy example:
for(r in 1:20) {
X <- sum(rnorm(1e6))
cat(r,"")
}
cat("\n")
The buffering phenomenon occurs whether I put the forgoing code in a
file and source that file,
or type the code directly into the console.
Any ideas? Thanks.
cheers,
Rolf Turner
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