freekngeek:

First you have to decide/determine what the primary index is. For example, it might be the two character first column or it may be a combination of several columns. You don't give enough information to be sure. (Though your sample data structure indicates that you're using a single key.)

Lets suppose that the first and second column comprise your key--In that case, you could do something like:

my %data;
while (my $line=<$INPUT_FILE_HANDLE>) {
   my ($rectype, $testID, $dimX, $dimY, $polynomial)
      = parse_input_line($line);
   my $key = "$rectype:$testID";
   $data{$key} = {
      RecType    => $rectype, TestID => $testID,
      DIM        => [ $dimX, $dimY ],
      Polynomial => $polynomial,
   };
}

[download]

Note the square brackets on the DIM line: that's how you can place an array reference inside your hash.

Does this answer your question? I don't feel like I understand just what it is you're having difficulty with, so I just guessed. If you could provide a bit more detail, we can give better answers.

...roboticus

When your only tool is a hammer, all problems look like your thumb.

In reply to Re: Multidimentional hash by roboticus
in thread Multidimentional hash by freekngeek

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.