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Re: Matrix construction
*To*: mathgroup at smc.vnet.net
*Subject*: [mg101119] Re: [mg101059] Matrix construction
*From*: Haibo Min <yshdfeng at gmail.com>
*Date*: Wed, 24 Jun 2009 06:34:55 -0400 (EDT)
*References*: <200906231103.HAA08024@smc.vnet.net>
Thank you all for your help~
Best regards!
Haibo
On Wed, Jun 24, 2009 at 3:57 AM, Murray Eisenberg <murray at math.umass.edu>wrote:
> A = Array[a, {3, 2}]; B = Array[b, {3, 4}];
> G = Array[g, {3, 2}]; H = Array[h, {3, 4}];
>
> (* brute force joining *)
> Join[Join[A, G], Join[B, H], 2]
>
> (* using a more specialized function *)
> ArrayFlatten[{{A,B},{G,H}}]
>
>
> Haibo Min wrote:
>
>>
>> I know that matrix can be constructed via Table or Array, but I want to
>> construct a matrix from other matrices, how to do it?
>> For example, suppose I would like to construct a matrix M which is
>> composed
>> of four matrices, A,B,C,D. The element corresponding to the first row and
>> the first column is A, the first row and second column is B...
>> I used the M={{A,B},{C,D}} and M={A,B,C,D}, but both of them didn't work.
>> How?
>>
>
> --
> Murray Eisenberg murray at math.umass.edu
> Mathematics & Statistics Dept.
> Lederle Graduate Research Tower phone 413 549-1020 (H)
> University of Massachusetts 413 545-2859 (W)
> 710 North Pleasant Street fax 413 545-1801
> Amherst, MA 01003-9305
>
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