Data Type Affects Channel Ranking
 
spatial position best for all types
accuracy at judging magnitudes, from best to worst


[Mackinlay, Automating the Design of Graphical Presentations of Relational Information, 
ACM TOG 5:2, 1986]
[Card, Mackinlay, and Shneiderman. Readings in Information Visualization: 
Using Vision to Think. Morgan Kaufmann 1999. Chapter 1]
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