From: Robert Love <rblove@...>
Date: 2006-03-23T13:33:51+09:00
Subject: Matrices, Gtk et al


I have something working but it sure seems clumsy and I'm hoping for 
pointers to make it better.  My app is a ruby & Gtk thing to do some 
calculations.  I want to have a standard 3x3 matrix of floating point 
numbers as well some 3x1 vectors.  I'm using a 9 element array today for 
the 3x3.  I also have a series of 9 Gtk.Entry fields that is even more 
clumsy than the floating point numbers.

How do I build a function that, when called by the Calc button callback, 
fetches the contents of the 9 numbers and returns it as a 3x3 matrix?  
From what I've read, ruby doesn't have real two dimensional arrays.  So 
am I stuck doing everything in a manner that doesn't map well to my math 
problem domain?

All advice appreciated.