This (rather old) paper is still worth reading: Cleveland, W. S. (1984), "Graphical Perception and Graphical Methods for Analyzing Scientific Data" http://cour

This (rather old) paper is still worth reading: Cleveland, W. S. (1984), "Graphical Perception and Graphical Methods for Analyzing Scientific Data" http://courses.ischool.berkeley.edu/i247/f05/readings/Cleveland_GraphicalPerception_Science85.pdf http://courses.ischool.berkeley.edu/i247/f05/readings/Clevel...