Tufte envisioning designing_data
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Edward TufteEnvisioning & Designing Data
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A Fair Warning
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Edward Tufte• Born 1942
• Yale University
• Data visualization and information design
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Edward Tufte, Envisioning Information
"The world is complex, dynamic, multidimensional; the paper is static, flat. How are we to represent the rich visual world of experience and measurement on mere flatland?"
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Flatlands• Design Metaphor
• To present data well, “escape” the flatlands to higher dimensions.
• Not simply a matter of 3D design
Edward Tufte, Envisioning Information
"Escaping this flatland is the essential task of envisioning information - for all the interesting worlds (physical, biological, imaginary, human) that we seek to understand are inevitably and happily multivariate in nature. Not flatlands."
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Suddenly, perspective
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Micro/Macro Readings• Multiple time scales of information
• A larger story that invites exploration
• We have to go deeper
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Layering & Separation• Confusion and clutter are failures of design, not attribution of
information
• Reduce noise by visual distinction between data via shape, size, etc.
• Google maps has geography and road maps
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What’s wrong with this design?
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Reduce clutter by removing implicit data (e.g. Name)
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Edward Tufte, The Visual Display of Quantitative Information
“The interior decoration of graphics generates a lot of ink that does not tell the viewer anything new. The purpose of decoration varies — to make the graphic appear more scientific and precise, to enliven the display, to give the designer an opportunity to exercise artistic skills. Regardless of its cause, it is all non-data-ink or redundant data-ink, and it is often chartjunk.”
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Chartjunk• Tested by the “Ink-Data Ratio”. How much data is represented versus
ink (or pixels) used?
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Don’t Decorate
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...or at least don’t decorate first
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At one point, this was preferred
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Sparklines
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Narrative of Space & Time• Time-series data
• Add spatial dimensions
• Reduce the complexity of data down to the core “point”
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The Greatest Statistical Chart Ever Made
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Napoleon’s march and retreat (Minard 1869)
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What info matters for a subway trip?
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Video link for later: PowerPoint is Evil
PowerPoint is Evil