Purple America: Using Color and Other Visual Cues to Convey Information · 2008. 3. 26. · c 2004...
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Purple America: Using Color and Other Visual Cues to Convey Information Robert J. Vanderbei December 7, 2007 Politics Department Lunchtime Seminar Princeton University http://www.princeton.edu/∼rvdb
Transcript of Purple America: Using Color and Other Visual Cues to Convey Information · 2008. 3. 26. · c 2004...
Purple America:
Using Color and Other Visual Cues to Convey
Information
Robert J. Vanderbei
December 7, 2007
Politics Department Lunchtime SeminarPrinceton University
http://www.princeton.edu/∼rvdb
1. USA Today
2. ElectionMaps
3. PurpleAmerica
4. Color Perception
Physically, color is infinite dimensional—it can be described by a function I(λ).
But, the human eye has only three types of color receptors. They are locatedin the cones. Hence, human color perception is 3 dimensional.
Primary Colors
Computer monitors use Red, Green, and Blue as primary colors:
6. Red, White, and Blue America
Margin of Victory
Very patriotic!
7. Brighter America 2004
8. Brighter America 1992
9. Colors Reversed
10. Where People Live
12. Red-Blue Cartogram
c©2004 M.T. Gastner, C.R. Shalizi, M.E.J. Newman
13. Purple Cartogram
c©2004 M.T. Gastner, C.R. Shalizi, M.E.J. Newman
14. 2006 Congressional Election
County-by-County
15. 2006 Congressional Election
District-by-District
16. 2006 Congressional Election: Margin-Of-Victory
District-by-District
17. Statistical Analysis of Polling Data
