Multivariate Visualization. Projection Distortion.

Multivariate Visualization

Projection

Projection

Projection

Distortion

Parallel Coordinates

Pairwise Comparisons

Graphical ExcellenceMinimize non-data ink

Allow data ink to perform more than one purposeCarry data informationServe a design functionShow multiple pieces of data

Multifunctioning Graphical Elements

PrinciplesMobilize every graphical element, perhaps several

times over, to show the data

Tufte pg 152

Data-Built Data Measures

Graphical element that plots the data: data measure

Ayres (1919)Number of divisionsWhich divisionsDuration of stay

Dot Maps

Chernoff Faces

Chernoff Faces

Chernoff Faces

Bubble PlotAuthorline

chat threadRed: initiated by

authorBlue: initiated by

someone else

http://www.cmu.edu/joss/content/articles/volume8/Welser/

Color

Color

PrinciplesMobilize every graphical element, perhaps several

times over, to show the data

Maximize Data Density and the size of the Data MatrixData rich context and credibility

Small MultiplesGraphics can be shrunk

Series of graphics showing same combination of variables

Indexed by changes in another variable

El Nino

http://www.nytimes.com/packages/html/politics/2004_ELECTIONGUIDE_GRAPHIC/

Interactionhttp://www.nytimes.com/interactive/2008/02/23/mo

vies/20080223_REVENUE_GRAPHIC.html

http://douweosinga.com/