Readers: I have discussed the use of Pie Charts and the Parts-to-Whole Relationship in a previous blog post. In that post, I noted some thoughts from Dr. Robert Kosara (photo, right). Dr. Kosara is a research scientist at Tableau Software. His focus is on the communication of data through visualization and visual storytelling. Robert is […]

Readers: In the past, I would have highly condemned pie charts without giving you much explanation why. However, Dr. Robert Kosara (photo, left), posted a great thought study of pie charts on his wonderful blog,, that I want to share with you. Dr. Kosara is a Visual Analytics Researcher at Tableau Software, with a […]