From: stuart macgregor <stuart.191@...>
Date: 2004-02-16T06:04:53+09:00
Subject: Matrix element assignment?

I have just completed a little first ruby job (oo wrapper lib for
(some aspects of) the nec2 EM simulator) - a very nice tool :)

One thing puzzled me: the built in Matrix class - how do you assign values
to individual elements? operator []=(i,j) seems not to have been defined? 
I suppose it is either obvious and I missed it, or left out for some very
good reason?  Perhaps one should use Array and convert to/from Matrix 
for the occasional matrix/vector equation?

I ended up using a mixture of Array and NArray.