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This is an old presentation about the problems with pie charts. I've since softened my opinions - there ARE times when pies are great.
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@acotgreave
I .PIES
HATEPIES
70%60%
+ 63%
193%
See: Kosslyn, Stephen, Graph Design for the Eye and Mind, Oxford University Press, 2006,
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@acotgreave
bit.ly/evil_pie
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