I also like the way that multiple pies can be sized (by area) to show the totals while the wedges show a breakdown. This can be done with stacked bars too, but the good thing about pies is the areas can be compared in multiple directions - such as on a map, or in a matrix.
I also like the way that multiple pies can be sized (by area) to show the totals while the wedges show a breakdown. This can be done with stacked bars too, but the good thing about pies is the areas can be compared in multiple directions - such as on a map, or in a matrix.
Amen to all of this! I especially love the Africa viz. It's a very powerful use of a pie chart for a very serious topic.