> -Original Message-
> From: r-help-boun...@r-project.org
> [mailto:r-help-boun...@r-project.org] On Behalf Of wendy
> Sent: Saturday, February 20, 2010 6:58 PM
> To: r-help@r-project.org
> Subject: [R] replicate matrix
>
>
> Hi all,
>
> I have a ma
You can just rep() it, and c() with extra data, and then matrix() it again:
> m <- matrix(c(1,4,3,6),2)
> matrix(c(rep(m, 3), c(2, 5)), nrow(m))
[,1] [,2] [,3] [,4] [,5] [,6] [,7]
[1,]1313132
[2,]4646465
On Sun, Feb 21, 2010 at 10:58 AM,
try this:
mat <- matrix(c(1,4,3,6), 2, 2)
cbind(
do.call(cbind, rep(list(mat), 3)),
c(2, 5)
)
I hope it helps.
Best,
Dimitris
wendy wrote:
Hi all,
I have a matrix, for example
[,1] [,2]
[1,] 13
[2,] 46
I want to replicate the matrix twice and add an extra column at
You can try something like:
mtx <- matrix(1:4, ncol = 2)
mtx.rep <- t(apply(mtx, 1, rep, r))
mtx.rep <- cbind(mrx.rep, new.column)
where r is your desired number of replications .
Hope it helps,
Boyko
Joshua Wiley-2 wrote:
>
> Hello Wendy,
>
> The simplest solution that comes to mind is t
Hello Wendy,
The simplest solution that comes to mind is to just use cbind.
For instance:
> x <- matrix(1:4, nrow=2)
> x
[,1] [,2]
[1,]13
[2,]24
> cbind(x,x,x,c(2,5)) # repeat x here as many times as needed
[,1] [,2] [,3] [,4] [,5] [,6] [,7]
[1,]1313
Hi all,
I have a matrix, for example
[,1] [,2]
[1,] 13
[2,] 46
I want to replicate the matrix twice and add an extra column at the end,
which is
[,1] [,2] [,3] [,4] [,5] [,6] [,7]
[1,] 13 13 132
[2,] 46 46 465
I found 'rep' o
yes, this works, thank yo. very smart solution!
-R
> Date: Sat, 19 Jul 2008 19:55:58 -0400
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: Re: [R] replicate matrix blocks different numbers of times into new
> matrix
olve my
> problem?
>
> Best,
>
> Ralph
>
>
>> Date: Sat, 19 Jul 2008 21:39:25 +0200
>> From: [EMAIL PROTECTED]
>> To: [EMAIL PROTECTED]
>> CC: r-help@r-project.org
>> Subject: Re: [R] replicate matrix blocks di
9:25 +0200
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> CC: r-help@r-project.org
> Subject: Re: [R] replicate matrix blocks different numbers of times into new
> matrix
>
> Ralph S. wrote:
>> Hi,
>>
>> I am trying to replicate blocks of a matrix (defined
Ralph S. wrote:
Hi,
I am trying to replicate blocks of a matrix (defined by factors) into another matrix, but an unequal, consecutive number of times for each factor.
I need to find an elegant and fast way to do this, so loops will not work.
An example of what I am trying to do is the follow
Hi,
I am trying to replicate blocks of a matrix (defined by factors) into another
matrix, but an unequal, consecutive number of times for each factor.
I need to find an elegant and fast way to do this, so loops will not work.
An example of what I am trying to do is the following:
# the data
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