Multi-Dimensional Data Visualization

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Multi-Dimensional Data Visualization

• cs5984 Information Visualization
• Chris North

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Data Space

• Multi-dimensional databases,
• 1D timelines,
• 2D maps,
• 3D volumes,
• Hierarchies/Trees directories,
• Networks/Graphs web, communications,
• Document collections digital libraries,

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Multi-dimensional

• Fewer dimensions -gt easier
• 1,2,3-D scatterplots
• Clevelands rules
• We will return to some more interesting 1,2,3-D
  cases later
• What about many dimensional data? n-D

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Glyphs Chernoff Faces

• 10 Parameters
• Head Eccentricity
• Eye Eccentricity
• Pupil Size
• Eyebrow Slope
• Nose Size
• Mouth Vertical Offset
• Eye Spacing
• Eye Size
• Mouth Width
• Mouth Openness
• http//hesketh.com/schampeo/projects/Faces/chernof
  f.html

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Glyphs Stars
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Multiple Views

• Scatterplot Matrix
• All pairs of attributes
• Brushing and linking
• http//noppa5.pc.helsinki.fi/koe/3d3.html

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Brushing and linking
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Today

• Inselberg, Multidimensional detective (parallel
  coordinates), book p107
• margaret, josh s

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Today

• Kandogan, Star Coordinates, (web)
• matt c, fanye

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Assignment

• Read for Thurs
• Rao, Table Lens, p343,597 (marty e,
  purvi)
• Feiner, Worlds within Worlds, p96 (scott m,
  ajay)
• Read for next Tues
• TweedieSpence, Externalizing Abstract
  Mathematical Models (Influence Explorer), p276
• Keim, VisDB, p126
• Read for next Thurs
• Fishkin, Movable filters (Magic Lens), p253
• Doan, Query Previews, web page
• Send me your picture
• Id

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Homework 1 Thurs Feb 1

• Get some data (gt1000 items, gt6 attributes)
• Visualize it (gt2 tools)
• Spotfire, Advizor, Table Lens, Parallel
  Coordinates, mmvz
• Written report (2-3 pages)
• data
• Usability Rex hartson
• eye-tracking - Debby hix
• Biotech lenny Heath, naren R
• NASA - Layne watson
• dept - Cliff Shaffer
• univ - Dennis kafura
• software eng - Steve Edwards
• survey data - Jan lee