[R] loop in list

Rui Barradas ruipbarradas at sapo.pt
Sun Jul 1 02:13:02 CEST 2012


You can avoid the loop using lapply.

f <- function(x) sample(100, 10)
samp.list <- lapply(1:20, f)

will choose 20 samples of 10 integers up to 100 and put them in a list. 
All you need is to write a function f(). f() must have an argument, even 
if it doesn't use it. If you need other arguments to be processed by 
f(), define it and call it as, for instance using the example above,

f <- function(x, ...) sample(100, 10, ...)
lapply(1:20, f)  # the same
lapply(1:20, f, replace=TRUE) # a second argument

See ?lapply

Hope this helps,

Rui Barradas

Em 30-06-2012 20:34, solafah bh escreveu:
> Hello
> I have a loop to sample 20 samples and I want to put them in one list, how I can make this??
> Regards
> Sulafah
> 	[[alternative HTML version deleted]]
> ______________________________________________
> R-help at 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.

More information about the R-help mailing list