Not having pie charts is by design. Grafico attempts to adhere to the chart design principles by Stephen Few, amongst others, who has this to say about pie char

Not having pie charts is by design. Grafico attempts to adhere to the chart design principles by Stephen Few, amongst others, who has this to say about pie charts: http://www.perceptualedge.com/articles/visual_business_intelligence/save_the_pies_for_dessert.pdf http://www.perceptualedge.com/articles/visual_business_intel...