From: Dan Fitzpatrick <dan@...>
Date: 2009-08-18T06:15:27+09:00
Subject: Named Matrix like ArrayFields

I'm looking for a named matrix that acts like arrayfields so you can  
get and set cells based on a name and/or an index. This is array  
fields <http://codeforpeople.com/lib/ruby/arrayfields/ 
arrayfields-4.7.0/> :

 >> require 'arrayfields'
=> true
 >> x = ArrayFields.new(:a,:b,:c,:d)
=> [:b, :d]
 >> x[0]
=> :b
 >> x[:a]
=> :b
 >> x['a']
=> :b

I basically want that but in two dimensions.

Something like:

x = NamedMatrix.new
x.xs = %w(a b c d) # the names of the x axis
x.ys = %w(e f g h) # the names of the y axis

So that x[:a][:f] is the same as x[0][1] for getting and setting. Also  
have some dumping mechanism to get an array of arrays or arrays of  
hashes or even csv or some other 2D dump.

I don't think this is too tough to write especially with arrayfields  
but was wondering if anyone has done it yet.

Thanks,

Dan