Rolf Turner wrote: > ... > I have been for many years under the impression that the pie chart > was invented by Florence Nightingale. Am I misinformed? > Hi Rolf,
Yes, you have been misled. Dear old Florence invented a related illustration now usually referred to as a "polar area diagram". It was an ingenious way of representing quantities as areas, but probably had to be explained at length to those subjected to it. The principal advantage of the pie chart is that most people think they understand it upon seeing it, even if they don't. As is common in human affairs, even the illusion of understanding is preferred to a lofty digression upon why the audience does not understand. Jim ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
