@IANS_Security pie charts are an anathema to data representation, your data deserves better. http://www.edwardtufte.com/notes-sketches/?msg_id=00018S&topic_id=1 http://www.edwardtufte.com/books/

Edward Tufte Notebooks & Sketches | Art, Science and SculptureA forum moderated by author and artist Edward Tufte, including discussion and questions dealing with information design.Edward TufteData Visualization Books by Edward Tufte | Order OnlineSome of the most important and influential works on data visualization ever produced available in clothbound and paperback versions.Edward Tufte