Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2004
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2004

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Concatenate matrices

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51439] Re: [mg51404] Concatenate matrices
  • From: DrBob <drbob at bigfoot.com>
  • Date: Sun, 17 Oct 2004 03:05:55 -0400 (EDT)
  • References: <200410160820.EAA23680@smc.vnet.net>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

Here are two methods:

a = {{1, 2, 3}, {3, 4, 5}, {5, 6, 7}}
b = {{11, 12}, {13, 14}, {15, 16}}

Transpose[Join @@ Transpose /@ {a, b}]

{{1, 2, 3, 11, 12},
   {3, 4, 5, 13, 14},
   {5, 6, 7, 15, 16}}

Needs["LinearAlgebra`MatrixManipulation`"]
BlockMatrix[{{a, b}}]

{{1, 2, 3, 11, 12},
   {3, 4, 5, 13, 14},
   {5, 6, 7, 15, 16}}

Bobby

On Sat, 16 Oct 2004 04:20:37 -0400 (EDT), Thomas Guignard <thomas.guignard at epfl.ch> wrote:

> Hi all
>
> Does somebody know if there's a simple function in mathematica to
> concatenate matrices?
>
> Example:
>
> / 1 2 3 \
> A = | 3 4 5 |
> \ 5 6 7 /
>
> / 11 12 \
> B = | 13 14 |
> \ 15 16 /
>
> I'd like to have
>
> / 1 2 3 11 12 \
> R = | 3 4 5 13 14 |
> \ 5 6 7 15 16 /
>
> And so on. See what I mean?
>
> Thanks a lot.
> T.
>



-- 
DrBob at bigfoot.com
www.eclecticdreams.net


  • Prev by Date: Re: Concatenate matrices
  • Next by Date: Re: Concatenate matrices
  • Previous by thread: Concatenate matrices
  • Next by thread: Re: Concatenate matrices