Pie chart: star or villain?
|DO IT NOW||What’s up? The pie chart is one of the most common visual tools for depicting data.|
|What’s new? But, multitudes of statisticians and visualisation experts have attacked the pie chart and pushed for the use of alternatives. Though early criticism primarily appealed to logic, in the last 40 years, pie chart critics have marshalled experimental evidence that seems to demonstrate the inferiority of pie charts at accurately conveying information.|
|So what? Maybe so, but we still like the pie.|
“The disadvantages of the pie chart are many. It is worthless for study and research purposes. In the first place the human eye cannot easily compare as to length the various arcs about the circle, lying as they do in different directions. In the second place, the human eye is not naturally skilled in comparing angles… In the third place, the human eye is not an expert judge of comparative sizes or areas, especially those as irregular as the segments of parts of the circle. There is no way by which the parts of this round unit can be compared so accurately and quickly as the parts of a straight line or bar.”