On May 29, 2010, at 11:37 PM, Kang Min wrote:
What if I want to select the 8th to 14th element of the list? I tried
to use [ again, but it doesn't work.
x[8:14]
(And I could not get Iverson's earlier method to work properly on a
long list. It just returned the whole list. Did it work
Hmm x[8:14] didn't work. Yes Iverson's method worked, I wanted the
whole list, with 7 elements in each vector.
Now I want the whole list as well, but with the 8th to 14th element.
On May 30, 7:47 pm, David Winsemius dwinsem...@comcast.net wrote:
On May 29, 2010, at 11:37 PM, Kang Min wrote:
On May 30, 2010, at 9:44 AM, Kang Min wrote:
Hmm x[8:14] didn't work. Yes Iverson's method worked, I wanted the
whole list, with 7 elements in each vector.
Now I want the whole list as well, but with the 8th to 14th element.
Oh, ... then in what sense did the lapply method not work? What
Hi Kang,
Try either
lapply(x, [, 8:14) # Erik Iverson's method
or
lapply(x, function(x) x[8:14])
HTH,
Jorge
On Sun, May 30, 2010 at 9:44 AM, Kang Min wrote:
Hmm x[8:14] didn't work. Yes Iverson's method worked, I wanted the
whole list, with 7 elements in each vector.
Now I want the
Sorry I made a mistake in my code, lapply(x, [, 8:14) works fine
now. Thanks.
On May 30, 10:55 pm, Jorge Ivan Velez jorgeivanve...@gmail.com
wrote:
HiKang,
Try either
lapply(x, [, 8:14) # Erik Iverson's method
or
lapply(x, function(x) x[8:14])
HTH,
Jorge
On Sun, May 30, 2010
What if I want to select the 8th to 14th element of the list? I tried
to use [ again, but it doesn't work.
[ is a function, and you want to use it on each element of the list,
so...
lapply(x, [, c(1:7))
and the call to c() is of course not necessary, since : will generate a
Hi,
I have a list of 100, each list has 20 elements, and I would like to
select the first 7 elements in each list.
Let's take the alphabet as an example.
x - lapply(1:100, function(i) sample(LETTERS))
I tried x[[1:7]], but it doesn't work. Can anyone enlighten me on how
to do such selections?
Kang Min wrote:
Hi,
I have a list of 100, each list has 20 elements, and I would like to
select the first 7 elements in each list.
Let's take the alphabet as an example.
x - lapply(1:100, function(i) sample(LETTERS))
I tried x[[1:7]], but it doesn't work. Can anyone enlighten me on how
to do
[ is a function, and you want to use it on each element of the list,
so...
lapply(x, [, c(1:7))
and the call to c() is of course not necessary, since : will generate a
vector.
__
R-help@r-project.org mailing list
Thanks a lot, it works!
On May 23, 3:10 pm, Erik Iverson er...@ccbr.umn.edu wrote:
[ is a function, and you want to use it on each element of the list,
so...
lapply(x, [, c(1:7))
and the call to c() is of course not necessary, since : will generate a
vector.
10 matches
Mail list logo
