On Wed, Apr 30, 2008 at 06:59:38PM -0400, esmail bonakdarian wrote: > > This has been an interesting discussion, and brings up two questions > for me: > > Is there a good collection of hints/suggestions for R language idoms in terms > of efficiency? For instance I read not to use for-loops, so I used apply only > to > later read that "apply" is internally implemented as a "for" so nothing gained > here. Warnings about pitfalls (such as nested loops), hints, suggestions would > be great.
Personally i like {l,t,}apply better, 1) it is more readable, 2) it takes two minutes to change it to par{L,S,}apply and then it runs in parallel. > The second question - is there some sort of profiling tool available that > would > make it easy to recognize where the script is spending most of its time? Might > be especially useful for newbies like me. See ?Rprof G. [...] -- Csardi Gabor <[EMAIL PROTECTED]> UNIL DGM ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.