MultiDimensional Data Visualization

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Multi-Dimensional Data Visualization

• cs5984 Information Visualization
• Chris North

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Quiz

• What is the purpose of visualization?
• What is our class motto?
• How can we map data to graphics?

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Information Types

• 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 easier
• Data mapping, Clevelands rules
• 1,2,3-D scatterplots
• We will return to some more interesting 1,2,3-D
  cases later

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Many Dimensions?

• 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 withBrushing and linking
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Scatterplot Matrix

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

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on steroids
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Different Arrangements of Axes

• Axes are good
• Lays out all points in a single space
• position is 1st in Clevelands rules
• Uniform treatment of dimensions
• Space gt 3 ?

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Parallel Coordinates

• Inselberg, Multidimensional detective (parallel
  coordinates)
• Ganesh, Christa

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Star Coordinates

• Kandogan, Star Coordinates
• Rohit, David

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Star Plot
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Assignment

• Book chapter 3
• Read for Thurs
• Rao, Table Lens
• Harsha, Vishal
• Keim, VisDB
• Ming, Binli
• Homework 1 due Thurs

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Next Week

• Tues Dynamic Queries
• Tweedie, Spence, Externalizing Abstract
  Mathematical Models (Attribute/Influence
  Explorer)
• Doan, Query Previews
• Thurs Multi-D Functions
• Feiner, Worlds within Worlds
• ???, HyperSlice