On 01.06.2011 18:59, Roy Shimizu wrote:
I'm pretty new to R, so please forgive the cluelessness of these questions.
Is it true that it is not possible to have a "vector or lists" in R?
Is a "list of lists" the closest one can get to a "vector of lists"?
Actually a list is a vector of mode "list".
Hence if you have a list of lists, it *is* a vector of lists and behaves
consistantly (e.g. when subsetiing with [] rather than [[]]).
L <- list(list(a=1, b=2), list(c=3, d=4))
L[1] # L can be considered a vector of mode list.
Is it possible to have a "matrix of lists" in R? Or an "array of lists"?
Yes:
X <- matrix(L, nrow=2)
X[1,1]
X[2,1]
or even:
dim(X) <- c(1,2,1)
mode(X) # "list"
class(X) # "array"
Uwe Ligges
Thanks!
Roy
[[alternative HTML version deleted]]
______________________________________________
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.
______________________________________________
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.
