R help - Mar 2010 - Binding a matrix to a matrix

Hello I have a 2x10x200 matrix and I would like to bind to it another 2x10
matrix in order to end up with an 2x10x2001 matrix, which command should i
use in order to do this? Thank you

Felipe Parra

	[[alternative HTML version deleted]]

If it is 3 dimensional then it is an array, not a matrix.  The abind function in
the abind package is probably what you want.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Luis Felipe Parra
> Sent: Tuesday, March 02, 2010 3:23 PM
> To: r-help at r-project.org
> Subject: [R] Binding a matrix to a matrix
> 
> Hello I have a 2x10x200 matrix and I would like to bind to it another
> 2x10
> matrix in order to end up with an 2x10x2001 matrix, which command
> should i
> use in order to do this? Thank you
> 
> Felipe Parra
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-
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On 3/03/2010, at 11:22 AM, Luis Felipe Parra wrote:
> Hello I have a 2x10x200 matrix and I would like to bind to it another 2x10
> matrix in order to end up with an 2x10x2001 matrix, which command should i
> use in order to do this? Thank you
(a) It's not a ***matrix***.  Matrices are ***two*** dimensional.  It's
an
array.

(b) Use abind() from the abind package.

(c) RSiteSearch("bind arrays") would have led you straight to this
....
but just RSiteSearch("bind") makes it the 57-th item so you probably
wouldn't have found it that way.

	cheers,

		Rolf Turner


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