See the posting guide: this is in the FAQ which you are expected to
consult before posting. See
http://cran.r-project.org/bin/windows/base/rw-FAQ.html#The-output-to-the-console-seems-to-be-delayed
and ?flush.console .
On 29/06/2012 08:01, Spencer Graves wrote:
Hello, All:
Does anyone know how to defeat buffering of output to the console
from Rgui? I routinely print progress reports to the console from
within Rterm running under Emacs with ESS (Emacs Speaks Statistics); see
the example below. However, when I run the same example under Rgui, it
queues all the output until the computations are complete.
How can I monitor the progress of computations in both Rgui and
Rterm?
Consider the following:
for(i in 1:1e7){
tst <- sin(i)
if((i%%1e5)==0)cat(i, "")
if((i%%1e6)==0)cat('\n')
}
For Rterm 2.15.1 running under Emacs with ESS (Emacs Speaks
Statistics), this prints 10000, then pauses before printing 200000,
etc., until it gets to 1000000, printing 10 numbers in each row.
However, in Rgui 2.15.1, it queues all the numbers and prints
them all together when it completes the computation. The following is
similar:
for(i in 1:1e7){
tst <- sin(i)
if((i%%1e5)==0)print(i)
if((i%%1e6)==0)cat('\n')
}
sessionInfo()
R version 2.15.1 (2012-06-22)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
Thanks,
Spencer
--
Brian D. Ripley, rip...@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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