From: Rolf Pedersen <rolfhsp@...>
Date: 2010-04-25T23:08:36+09:00
Subject: Re: Populate (an array or a matrix) from a vector

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Tip: Did you check out the Matrix and Vector classes in the Ruby Standard
Library?
http://ruby-doc.org/core/classes/Matrix.html
http://ruby-doc.org/core/classes/Vector.html

Best regards,
-Rolf

On Sun, Apr 25, 2010 at 3:10 PM, Paul A. <cyril.staff@gmail.com> wrote:

> Hello,
>
> I have a simple, but very tricky, problem.  I would like to fix it using
> an array.  But matix are possibly more appropriate (even if matrix can
> not have 3 dimensional values, I think).
>
> I would like to populate a table (of 2 or 3 dimensions), from a vector.
>
> I think the best way to explain myself is to put some examples, with an
> array such as:
>
> >> # thanks to Rolf Pedersen's function (
> http://www.ruby-forum.com/topic/208620)
> >> table = make_array(3, 5)
>
> And now, if the seeder vector is: [1, 0], the result should be:
>
> => [
> =>   [4, 3, 2, 1, 0],
> =>   [4, 3, 2, 1, 0],
> =>   [4, 3, 2, 1, 0]
> => ]
>
> If the vector is: [-1, 0]
>
> => [
> =>   [0, 1, 2, 3, 4],
> =>   [0, 1, 2, 3, 4],
> =>   [0, 1, 2, 3, 4]
> => ]
>
> If the vector is: [-2, 0]
>
> => [
> =>   [0, 0, 1, 1, 2],
> =>   [0, 0, 1, 1, 2],
> =>   [0, 0, 1, 1, 2]
> => ]
>
> If the vector is: [1, 1]
>
> => [
> =>   [2, 2, 2, 1, 0],
> =>   [1, 1, 1, 1, 0],
> =>   [0, 0, 0, 0, 0]
> => ]
>
> If the vector is: [0, 1]
>
> => [
> =>   [2, 2, 2, 2, 2],
> =>   [1, 1, 1, 1, 1],
> =>   [0, 0, 0, 0, 0]
> => ]
>
> Have you got a idea, or a plan? :s
> Any comments are welcome. Thank you.
>
> Best regards.
> --
> Posted via http://www.ruby-forum.com/.
>
>

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