Dear r-helpers,
An editor has suggested that I use bar plots to capture an interaction
of two 2-level factors and an interaction of a 2 by 3 factorial
experiment. (It would seem that there's a fear that someone might try
to interpolate between, e.g., 'male' and 'female'.) In general it
seems to me that an interaction plot with lines is easier to read, and
not likely to mislead. Does anyone know if and where this has been
discussed?
_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
USPS: P.O.Box 400400 Charlottesville, VA 22904-4400
Parcels: Room 102 Gilmer Hall
McCormick Road Charlottesville, VA 22903
Office: B011 +1-434-982-4729
Lab: B019 +1-434-982-4751
Fax: +1-434-982-4766
WWW: http://www.people.virginia.edu/~mk9y/
Interaction plots as lines or bars?
2 messages · Michael Kubovy, Dieter Menne
Michael Kubovy wrote:
An editor has suggested that I use bar plots to capture an interaction of two 2-level factors and an interaction of a 2 by 3 factorial experiment. (It would seem that there's a fear that someone might try to interpolate between, e.g., 'male' and 'female'.) In general it seems to me that an interaction plot with lines is easier to read, and not likely to mislead. Does anyone know if and where this has been discussed?
Editors are paid by the ink. I have never seen anything else than lines for such a plot. However, I once was successful in using somewhat wider lines that looked barish. Which made me believe that the "paid by the ink" is not too bad an analogy: editors fear graphics that look too empty, so give them their black. I am sure Hadley will argue that this is the reason why ggplot2 by default has a gray background. Dieter
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