Another in the IBM developerWorks
series of articles, Create custom data charting tools using Perl and GD
"More than just another "pie-graphs-with-GD" tutorial, this article describes techniques you can use to create new levels of usefulness in your dynamically generated charts. Cook up some automatically generated graphs for your organizational meetings or live enterprise directory data. Annotate the charts with readable text that delivers more information than the standard pie chart."
As is the case with all of these developerWorks
articles you can provide feedback using the form at the bottom.