#DataVizInSixWeeks, Week 4 - Design issues

#DataVizInSixWeeksCopyright Anne Stevens

Design

#DataVizInSixWeeksCopyright Anne Stevens

Week One

What is data visualization? Historical context

Week Four

Design issues & best practices

Week Two

Visualization typesWeek Five

Big data, data management

Week Three

Perception and cognitionWeek Six

Synthesis

Data Viz In Six WeeksAn Introduction to Visual Analytics course taught at OCAD University, Toronto

By Anne Stevens

#DataVizInSixWeeksCopyright Anne Stevens

Design issues & best practices

3D

Graphical integrity Data density Interaction

Colour

Metaphor

#DataVizInSixWeeksCopyright Anne Stevens

Graphical integrity

3D

Graphical integrity Data density Interaction

Colour

Metaphor

#DataVizInSixWeeksCopyright Anne Stevens

Edward Tufte

#DataVizInSixWeeksCopyright Anne Stevens

The representation of numbers, as physically measured on the surface of the graphic itself, should be directly proportional to the quantities represented.

(Edward Tufte)

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The Lie Factor

Lie Factor =Size of effect in data

Size of effect shown in graphic

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Lie Factor =18.0

27.5 – 18.0x 100% = 53%

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Data / ink ratio

Data-ink ratio =total ink used to print the graphic

data-ink

proportion of a graphic’s ink devoted to the non-redundant display of data-information

=

1.0 – proportion of a graphic that can be erased without loss of data information

(Edward Tufte)

=

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William PlayfairScottish Imports and Exports

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Edward TufteThe Visual Display of Quantitative Information

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Edward TufteThe Visual Display of Quantitative Information

#DataVizInSixWeeksCopyright Anne Stevens

Edward TufteThe Visual Display of Quantitative Information

#DataVizInSixWeeksCopyright Anne Stevens

Data density

3D

Graphical integrity Data density Interaction

Colour

Metaphor

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Context is king

Edward TufteThe Visual Display of Quantitative Information

#DataVizInSixWeeksCopyright Anne Stevens

Edward TufteThe Visual Display of Quantitative Information

#DataVizInSixWeeksCopyright Anne Stevens

High density vs summary information

Edward TufteThe Visual Display of Quantitative Information

Summary graphics can emerge from high-information displays, but there is nowhere to go if we begin with a low-information design.

(Edward Tufte)

#DataVizInSixWeeksCopyright Anne Stevens

Data-rich designs give context and credibility to statistical evidence. Low-information designs are suspect: what is left out, what is hidden, why are we shown so little? (Edward Tufte)

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Pies – very low density

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Pies in context

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Interaction

3D

Graphical integrity Data density Interaction

Colour

Metaphor

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Fully non-interactive

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Filter lists vs. animated transitions

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Animated transitions

Fathom Information Design, for GEhttp://fathom.info/kitchen

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Direct manipulation

Brava prototypeBorzu Talaie

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getkinetica.com

http://vimeo.com/channels/datavisualization/88702738

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The Bertifier

Charles Perin. The Bertifierbertifier.com

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Overview + detail (preserve context)

xamOverviewPlusDetailPan (top left), TableLens. Rao and Card (bottom left)

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Overview + detail (preserve context)

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Movement: activity & context

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Lev Manovich

Lev Manovich et al. Cultural Analytics – Mark Rothko Paintingsyoutube.com/watch?v=-YlT1qFhJhk

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3D

3D

Graphical integrity Data density Interaction

Colour

Metaphor

#DataVizInSixWeeksCopyright Anne Stevens

Three dimensions of data

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Colour

3D

Graphical integrity Data density Interaction

Colour

Metaphor

#DataVizInSixWeeksCopyright Anne Stevens

Colour Brewer

#DataVizInSixWeeksCopyright Anne Stevens

Redundant coding

Stevens et al. Care and Condition Monitor

#DataVizInSixWeeksCopyright Anne Stevens

Visual metaphor

3D

Graphical integrity Data density Interaction

Colour

Metaphor

#DataVizInSixWeeksCopyright Anne Stevens

Metaphor theory

Fundamental spatial metaphors Up, down

Fast, slow

Inside, outside

Warm, cold

Complex metaphors are built on simpler metaphors

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Visual metaphors - flags

Icaro Doria, Meet the Worldbrazilianartists.net/home/flags/index.htm

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Visual metaphors

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Metaphors of time

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Metaphors of buildings

Luisa Bufardeci, Ground Planlouisabufardeci.net/pages/groundPlan/gp.html

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Metaphors of technology

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Metaphors of metaphors

Global Tube Mapthisiscolossal.com/2011/06/global-tube-map/

#DataVizInSixWeeksCopyright Anne Stevens

Design issues & best practices

3D

Graphical integrity Data density Interaction

Colour

Metaphor

#DataVizInSixWeeksCopyright Anne Stevens

Week One

What is data visualization? Historical context

Week Four

Design issues & best practices

Week Two

Visualization typesWeek Five

Big data, data management

Week Three

Perception and cognitionWeek Six

Synthesis

Data Viz In Six WeeksAn Introduction to Visual Analytics course taught at OCAD University, Toronto

By Anne Stevens

stevensanne.com

stevensanne.com/blog/

@3_ring_binder