Hello,

I'm trying to decipher some extremely large datastructures (specifically in cPanel's EasyApache code) for my own edification, and I've been experimenting with GraphViz::Data::Structure and GraphViz::Data::Grapher (as per this awesome post http://www.perlmonks.org/?node_id=481745), and from my initial tests either one would be just a terrific help in comprehending this monster. Also it's really cool.

However, I'm having trouble figuring out how to get these modules to do this in an intelligible fashion.

For example, with *::Structure I get this 5 meg png:

http://singularityfps.com/images/output_structure.png

As you can see, it's kinda squashed. Is there any way to control that? I don't see anything on the cpan documenation on either module to try to manipulate the way it draws the diagram.

I did get a 5 meg postscript that looks a heck of a lot better (setting my pagesize to 10000 x 10000 pt in Ghostview enables one to see part of it) but even it has some pretty dense areas, and of course it's quite difficult to view because it's so large:

http://singularityfps.com/images/output_structure.ps

Lastly with Grapher when I feed it the main object reference in the same way, I get this wonderfully helpful diagram:

http://singularityfps.com/images/output_grapher.png

Again I can't see what I'm doing wrong from the docs.

Any input, specific or general, would be greatly appreciated! I'm a novice to this sort of programming.

In reply to Visualizing very large datastructures by rastoboy

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.