Pie charts: the exception that proves the rule

Pie charts: don't use them. That's been my motto, and it's a (non-) feature of one of the graphics applications I use. Now Masanao at Statistical Modeling, Causal Inference, and Social Science posts the Color of Flags, possibly an interesting use for such a tool. See also Information Extraction from Different Data Representation Forms on a CRT: Charts and Tables by Janice M. Engberg and F. Layne Wallace.