tilly's addressed your main point, but I thought I should point out two things about get_top_sources:
  1. You're never subtracting from $total when you add stuff to your return value, meaning that the "other" slice is forever too big
  2. Including the "other" slice, you actually produce $max_wedges+1 wedges
Here's what I might do, but I'm a bit odd. After you calculate @sorted...: 
  my @sorted = sort {
        $events{$b}{'count'} <=> $events{$a}{'count'}
               } keys %events;
  if (@sorted > $max_wedges)
  {
    map { $events{'other'}{'count'} += $_ } 
        @sorted[$max_wedges..$#sorted];
    @sorted[$max_wedges..$#sorted] = ('other');
  }
  return [map { {$_ => $events{$_}{'count'}}; } @sorted];

[download]
Note that $total is now never used, so there's no longer any reason to be calculating it above.

This uses map heavily, which is sometimes a bit odd to get used to, but I find it leads me to write stuff that I can look at later and easily read. YMMV.

In reply to Re: Debugging DBD::Chart by fizbin
in thread Debugging DBD::Chart by fuzzyping

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.