Check out the post Dumping trees to a console. that BrowserUK created that takes a Perl tree structure and creates an ASCII representation of it.

Update: Didn't spot the OP's request for something graphical, not textual. Leaving my original answer, and actually addressing the request for graphics, the use of google chart modules could be quite useful

In reply to Re: Hierarchical chart by Sinistral
in thread Hierarchical chart by sathish_cudd

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