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MathGroup Archive 2004

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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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