From: Robert Love <rblove@...>
Date: 2006-03-24T13:13:52+09:00
Subject: Re: Matrices, Gtk et al

In <44231E6E.3000807@seattleu.edu> Justin Collins  wrote:
> Robert Love wrote:
>> 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
> 
> Try checking out the Matrix standard library:
> 
> http://ruby-doc.org/stdlib/libdoc/matrix/rdoc/index.html
> 

Thanks, I will look at.  I assume that it is for floating numbers only?  
I can't have a 3x3 matrix of Gtk.Entry fields so a user can input this?