https://eagereyes.org/papers/a-pair-of-pie-chart-papers
I had, coincidentally, been doing some research of my own on perceptual anchors and how that relates to performance of pie charts versus stacked bar charts in part-to-whole comparisons. It would suggest that pies are not the terrible bad-guy after all. Who knew!
Stephen Redmond is a Data Visualization professional. He is author of Mastering QlikView, QlikView Server and Publisher and the QlikView for Developer's Cookbook
