Re: [R] How to add rowSums into list?

2008-01-11 Thread Henrique Dallazuanna
lapply(a, addmargins, 2) On 11/01/2008, Lauri Nikkinen [EMAIL PROTECTED] wrote: Hi R-users, I have a list a - list(one=matrix(rnorm(20), 5, 4), two=matrix(rnorm(20, 3, 0.5),5,4)) How to add rowSums (calculated using lapply) to corresponding matrix in this list lapply(a, function(x)

Re: [R] How to add rowSums into list?

2008-01-11 Thread ONKELINX, Thierry
januari 2008 14:09 Aan: [EMAIL PROTECTED] Onderwerp: [R] How to add rowSums into list? Hi R-users, I have a list a - list(one=matrix(rnorm(20), 5, 4), two=matrix(rnorm(20, 3, 0.5),5,4)) How to add rowSums (calculated using lapply) to corresponding matrix in this list lapply(a, function(x

[R] How to add rowSums into list?

2008-01-11 Thread Lauri Nikkinen
Hi R-users, I have a list a - list(one=matrix(rnorm(20), 5, 4), two=matrix(rnorm(20, 3, 0.5),5,4)) How to add rowSums (calculated using lapply) to corresponding matrix in this list lapply(a, function(x) rowSums(x)) ?? -Lauri __

Re: [R] How to add rowSums into list?

2008-01-11 Thread Henrik Bengtsson
On 11/01/2008, Lauri Nikkinen [EMAIL PROTECTED] wrote: Thanks, one further question: how to order these matrices using these row sums? lapply(a, function(x) order(x[,5])) #produces only indeces ...which you can use as row indices 'idxs' to reorder the rows of matrix 'x' by x[idxs,]. /Henrik

Re: [R] How to add rowSums into list?

2008-01-11 Thread Peter Dalgaard
Lauri Nikkinen wrote: Thanks, one further question: how to order these matrices using these row sums? lapply(a, function(x) order(x[,5])) #produces only indeces lapply(a, function(x) x[order(x[,5]),]) -Lauri 2008/1/11, Henrique Dallazuanna [EMAIL PROTECTED]: lapply(a,

Re: [R] How to add rowSums into list?

2008-01-11 Thread Lauri Nikkinen
Thanks, one further question: how to order these matrices using these row sums? lapply(a, function(x) order(x[,5])) #produces only indeces -Lauri 2008/1/11, Henrique Dallazuanna [EMAIL PROTECTED]: lapply(a, addmargins, 2) On 11/01/2008, Lauri Nikkinen [EMAIL PROTECTED] wrote: Hi R-users,