Ivan Calandra <ivan.calan...@uni-hamburg.de> writes: > Related to it, the *apply functions are still a bit difficult to > understand. When I have to use them, I just try one and see what > happens. I don't understand them well enough to know which one I > need.
Ditto. I have ended up with a small collection of "black magic" invocations copied from other folks' code, designed to do things like "I wrote a function to read a file and generate a data frame. Now I want to iterate (vectorize) this over many files, and get a much larger data frame." This may be one specific case of the larger challenge of "transforming R data structures". A somewhat pedantic set of recipes might usefully be evolved on e.g. the wiki. - Allen S. Rout ______________________________________________ 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.
