I think your problems stem from your use of curly brackets when you define your array. @column_info is a list containing exactly one element -- a reference to a rather strange hash. To see what you're doing wrong, try adding: 
  use Data::Dumper;
  print Dumper(\@Column_Info);

[download]
If you get rid of the curlies (use round parentheses instead), then you'll be able to reference the array as: 
my @array = ( [0,0], [0,1], [1,0], [1,1] );
for (my $x=0; $x<4; $x++)
{
  for (my $y=0; $y<2; $y++)
  {
    printf "%d,%d = %n", $x, $y, $array[$x][$y];
  }
}

[download]

In reply to Re: Two dimensional array problem by dpuu
in thread Two dimensional array problem by coec

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.