From: Dave Thomas <Dave@...>
Date: 2001-04-24T12:39:37+09:00
Subject: [ruby-talk:14131] Re: rasworth matrix

"rashworth" <rashworth@mail.warpnet.net> writes:

> What is the Ruby code to produce a 3 row by 2 column matrix
> of pixel elements, ie black and white?
> 
> Thank you very much.
> 
> Bob Ashworth

Bob:

First - a request. When you ask a new question, could you do it by
posting a new message, rather than by replying to some totally
unrelated one.

In terms of your question, it's hard to answer as it stands. Is the
question "how do I store a 2d matrix", or it is "how do I write it
out", or ...

Here's a simple 2d array:

  arr = [
          [ 1, 0 ],
          [ 0, 0 ],
          [ 1, 1 ]
        ]

And here's a nested loop that accesses the elements

  for row in 0..2
    for col in 0..1
      print arr[row][col], " "
    end
    print "\n"
  end

Does that help?


Dave