Actually, my output would be: 
$chr $begin $end $id $average

[download]
But I just wanted to start with calculating. I would like to calculate the average difference between the 2 columns (5 and 6) for the same id. So for line 3,4,5 I would like to calculate the average difference between column 5 and 6. And for the lines for which only one line has that id, like line 1 I just want to calculate the difference between column 5 and 6, since there is no average to calculate. I only want to output the lines that have a average difference > 0.2

In reply to Re^2: compare values while value on other column remains the same by linseyr
in thread compare values while value on other column remains the same by linseyr

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.