Re: Merge of Matrices
- To: mathgroup at smc.vnet.net
- Subject: [mg71140] Re: Merge of Matrices
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Thu, 9 Nov 2006 03:38:02 -0500 (EST)
- Organization: The Open University, Milton Keynes, UK
- References: <eisglr$nf9$1@smc.vnet.net>
Robert Berger wrote:
> Hello!
>
> I like to create from the four matrices A (N1 rows and N1 columns),
> B (N1 rows and N2 columns), C (N2 rows and N1 columns),
> D (N2 rows and N2 columns) a new matrix X of the form
>
> A B
> X =
> C D
>
>
> Once A & B and C & D have been merged, the first (A & B) and the
> second row (C& D) can be merged in that way by applying Join, which is
> not a problem but how can I merge A & B (and of course C & D) in
> that way?
>
> Kindly regards,
> Roman.
>
Try
<<LinearAlgebra`MatrixManipulation`
BlockMatrix[{A, B}, {C, D}]
See
http://documents.wolfram.com/mathematica/Add-onsLinks/StandardPackages/LinearAlgebra/MatrixManipulation.html
Regards,
Jean-Marc