Data Visualization Outline
• Visualizing data: Mapping data onto aesthetics
• Coordinate systems and axis
• Color Scales
• Visualization for different types of data
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Amount
Distribution
Proportions
Associations
Uncertainty
• ... Visualizing data: Mapping data
onto aesthetics
• Commonly used aesthetics in data visualization:
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Position
Shape
Size
Color
Line width
Line type
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Which one(s) can only represent discrete data?? Scales map data values onto
aesthetics
• The mapping between data values and aesthetics
values is created via scales.
• A scale must be one-to-one
24 • Data visualization is part art and part science.
Examples of ugly, bad, and wrong figures
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