data-visualization
Data Visualization
Principles and best practices for effective data visualization.
Core Principles
Tufte's Foundations
Data-Ink Ratio: Maximize ink used for actual data
- Remove unnecessary gridlines, borders, backgrounds
- Eliminate 3D effects, shadows, decorative elements
- Every visual element must justify its existence
Lie Factor: Graphical representation must match data
- Lie Factor = Size of Effect in Graphic / Size of Effect in Data
- Ideal = 1. Substantial distortion when >1.05 or <0.95
- Avoid: non-zero baselines, inconsistent scales, 3D distortion
Chart Junk: Remove non-data ink and redundant data-ink
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