Hi
try to do it without loop
lapply(m,function(x) x[x2])
HTH
Petr
On 25 Aug 2006 at 13:52, xpRt.wannabe wrote:
Date sent: Fri, 25 Aug 2006 13:52:51 -0500
From: xpRt.wannabe [EMAIL PROTECTED]
To: r-help@stat.math.ethz.ch
Subject:
sub.m - lapply(m, function(x)x[x2])
sub.m
[[1]]
[1] 3 4
[[2]]
[1] 4 5
[[3]]
[1] 4
sub.m[unlist(lapply(sub.m, function(x) length(x) == 2))]
[[1]]
[1] 3 4
[[2]]
[1] 4 5
sub4.m - lapply(m, function(x)x[x4])
sub4.m[unlist(lapply(sub4.m, function(x) length(x) 0))]
[[1]]
[1] 5
Patrick
lapply(m,function(x)x[x2])
[[1]]
[1] 3 4
[[2]]
[1] 4 5
[[3]]
[1] 4
__
R-help@stat.math.ethz.ch 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
Thank you!
On 8/26/06, Patrick Burns [EMAIL PROTECTED] wrote:
sub.m - lapply(m, function(x)x[x2])
sub.m
[[1]]
[1] 3 4
[[2]]
[1] 4 5
[[3]]
[1] 4
sub.m[unlist(lapply(sub.m, function(x) length(x) == 2))]
[[1]]
[1] 3 4
[[2]]
[1] 4 5
sub4.m - lapply(m, function(x)x[x4])
On Sat, 26-Aug-2006 at 09:57AM +0100, Patrick Burns wrote:
| sub.m - lapply(m, function(x)x[x2])
| sub.m
| [[1]]
| [1] 3 4
|
| [[2]]
| [1] 4 5
|
| [[3]]
| [1] 4
|
| sub.m[unlist(lapply(sub.m, function(x) length(x) == 2))]
| [[1]]
| [1] 3 4
|
| [[2]]
| [1] 4 5
|
| sub4.m - lapply(m,
On 8/26/06, Patrick Connolly [EMAIL PROTECTED] wrote:
On Sat, 26-Aug-2006 at 09:57AM +0100, Patrick Burns wrote:
| sub.m - lapply(m, function(x)x[x2])
| sub.m
| [[1]]
| [1] 3 4
|
| [[2]]
| [1] 4 5
|
| [[3]]
| [1] 4
|
| sub.m[unlist(lapply(sub.m, function(x) length(x) == 2))]
|
try this:
set.seed(123)
tmpf - function() {
+ x - rpois(rpois(1,4),2)
+ }
n - 3
m - replicate(n,tmpf())
m
[[1]]
[1] 3 2 4
[[2]]
[1] 0 2 4 2 2 5 2
[[3]]
[1] 2 0 4 1 0
lapply(m, function(x)x[x2])
[[1]]
[1] 3 4
[[2]]
[1] 4 5
[[3]]
[1] 4
On 8/25/06, xpRt.wannabe [EMAIL PROTECTED] wrote:
Jim and Patrick,
Both of you made the same suggestion, which works great!
A follow-up question: Suppose I change the condition 'x2' in 'lapply'
to 'x4', as follows:
set.seed(123)
tmpf - function() {
x - rpois(rpois(1,4),2)
}
n - 3
m - replicate(n,tmpf())
m
sub.m - lapply(m, function(x)x[x4]) #
Yet another question:
Let's say I do the following:
set.seed(123)
tmpf - function(){
x - rpois(rpois(1,4),2)
}
n - 3
m - replicate(n, tmpf())
m
sub.m - lapply(m, function(x)x[x2])
'sub.m' gives me:
[[1]]
[1] 3 4
[[2]]
[1] 4 5
[[3]]
[1] 4
The question is: What do I need to do such that I
