Re: How to construct a matrix like this ?
- To: mathgroup at smc.vnet.net
- Subject: [mg50898] Re: [mg50895] How to construct a matrix like this ?
- From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
- Date: Mon, 27 Sep 2004 00:42:04 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On 26 Sep 2004, at 18:32, zhoukm at hotmail.com wrote:
> With Array[a, {2,2}] I can get an array like:
> | a[1,1] a[1,2] |
> | a[2,1] a[2,2] |.
> But occasionally I want matrix like:
> | a11 a12 |
> | a21 a22 |
> I remember I once figured out a way to do it but now I forgot. Anyone
> can give me a hand?
>
> Regards
>
f[i_, j_] := ToExpression[StringJoin["a", ToString[i],
ToString[j]]]
Array[f, {2, 2}]
{{a11, a12}, {a21, a22}}
Andrzej Kozlowski
Chiba, Japan
http://www.akikoz.net/~andrzej/
http://www.mimuw.edu.pl/~akoz/