On Fri, 24 Jun 2005, Vehbi Sinan Tunalioglu wrote: > Can someone technically explain, why does it take so long with loops in R?
First please demonstrate that it does! a <- 0 system.time(for(i in 1:1e6) a <- a+1) takes 1 second for a million iterations and you think that is `so long'? If you do, the technical explanation is that R is interpreted rather than compiled. More likely the problem is *how* you are using loops. The FAQ mentions reference material on how to use R efficiently and it would be more productive to learn to do so rather than claim it is inefficient. -- Brian D. Ripley, [EMAIL PROTECTED] 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 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
