From: dblack@...
Date: 2003-01-28T23:10:59+09:00
Subject: Re: Questions from a Ruby Newbie (file io and data structures)...

Hi --

On Tue, 28 Jan 2003 christopher.j.meisenzahl@citicorp.com wrote:

> David,
>
> Thanks very much!
>

> That looks very elegant, if somewhat advanced. Can you point me to
> docs for the Matrix class? I can�t find it in my pickaxe book.
> :-(

See the new, improved version in my next message....  As for docs,
there's a lot in the source file, which is lib/matrix.rb in the Ruby
distribution.

> How does a matrix/vector differ from an array?

Mainly it has a transpose method, which I nonetheless forgot about :-)

I fear my knowledge of the underlying theory of matrices is very thin;
maybe one of the math people will jump in.


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav