Hello,
I'm cc'ing R-Help.
Sorry but your question was asked 3.5 years ago, I really don't
remember it. Can you please post a question to R-Help, with a
reproducible example that describes your problem?
Rui Barradas
Citando catalin roibu :
> Dear Rui,
>
> I helped me some time ago with
Hello,
Try the following.
fun <- function(x, k){
n <- length(x)
cmb <- combn(n, k)
apply(cmb, 2, function(j) x[j])
}
uplot <- unique(dat$plot)
fun(uplot, 2)
Hope this helps,
Rui Barradas
Em 14-11-2012 13:42, catalin roibu escreveu:
Hello again,
I want the individual plots aggreg
Hello,
This will give you a list of 19 elements, each element k is a matrix of
all combinations of 19 taken k at a time.
cmb <- lapply(seq_len(nrow(dat)), function(k) combn(nrow(dat), k))
d <- dat[["d"]]
lapply(cmb, function(cc) apply(cc, 2, function(j) d[j]))
Hope this helps,
Rui Barradas
Hello,
You forgot to Cc the list.
As for your question, you want all possible combinations of rows? For
all possible values of k in 1:19?
> sum(sapply(1:19, function(k) choose(19, k)))
[1] 524287
Or you want to split the data.frame by plot and the have all possible
combinations?
> sum(sapp
Hello,
Please use ?dput to post your data.
dput(MyData) # paste the output of this in a post.
And you must be more clear, what does "aggregate" mean? To sum? In the
mean time see
?combn
Hope this helps,
Rui Barradas
Em 14-11-2012 11:11, catalin roibu escreveu:
Dear R users,
I want to agg
Dear R users,
I want to aggregate all *d *data from all combination of n *plots* taken
by k.
Thank very much!
My data is like that:
plot d 1 14 1 13 1 12 1 14 1 18 1 20 1 21 1
43 1 108 1 43 2 41 2 61 2 83 2 61 2 84 2 45 2 21 2 12 2 11 ... 100
10
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