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Skyline charts by Bill Caemmerer
- 1. Bill Caemmerer’s Telling the Data Comparison Story Using Skyline Graph (instead of two pies) IxDA London Redux 21 February 2012 Virginia Cagwin @vcagwin
- 2. Telling What Happened Just like every picture, every graph tells a story, or it should. Frequently the story we want to tell is a comparison to the past or to our plans, a “what happened” story. - Bill Caemmerer
- 3. USA UK Petrol Mobile Phone Entertainment Coffee Mobile Phone Coffee Petrol Food Travel Entertainment Food Travel area= (angle/360)*π r2
- 4. Tough Questions (for pie charts) • How much did any item change? • What do you mean by “percent” 20% +5%=21%..??
- 5. Comparison Stories: “what happened?”
- 6. We Want to Know • Relative changes (How many adverts can I air?) • Biggest most important changes (How much money will I lose?)
- 9. What makes details easy to see?
- 10. Horizons
- 11. Silhouettes
- 12. • Variation from a horizon line • Height and width • Size or area
- 14. UK 175% 150% area = x*y 125% 100% 75% 50% 25% Food Travel Entertainment Coffee Mobile Petrol 32 26 16 6 14 4 USA
- 15. UK 175% 150% 125% 100% 75% 50% 25% Food Travel Entertainment Coffee Mobile Petrol 32 26 16 6 14 4 USA
- 16. UK 175% 44 150% 125% 5 33 17 7 100% 75% 50% 5 25% Food Travel Entertainment Coffee Mobile Petrol 32 26 16 6 14 4 USA
- 19. More Info • Bar-Mekko Charts • Variable Width Column Charts • Variwide Charts • Coming Soon: skylinecharts.net • bill@caemmerer.net
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