Re: Concatenate matrices

• To: mathgroup at smc.vnet.net
• Subject: [mg51482] Re: Concatenate matrices
• From: Roland Franzius <roland.franzius at uos.de>
• Date: Tue, 19 Oct 2004 02:56:02 -0400 (EDT)
• Organization: Universitaet Hannover
• References: <ckqmb1\$nb0\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Thomas Guignard wrote:
> Hi all
>
> Does someone know if there is a function in Mathematica to simply
> concatenate matrices (provided their dimensions are right).
>
> Example:
>
>      / e11  e12  e13 \
> E = | e21  e22  e23 |
>      \ e31  e32  e33 /
>
>      / f11  f12 \
> F = | f21  f22 |
>      \ f31  f32 /
>
> I'd like to have:
>
>      / e11  e12  e13  f11  f12 \
> R = | e21  e22  e23  f21  f22 |
>      \ e31  e32  e33  f31  f32 /

Consider Transpose.

A = Table[Subscript[a,i + 10  k] , {i, 1, 2}, {k, 1, 3}]
B = Table[Subscript[b,i + 10  k] , {i, 1, 2}, {k, 1, 2}]

cc = Flatten/@ Transpose[{A,Transpose[B]}]

--

Roland Franzius

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