search for: 1301015f3

...answers. Anyway here is my question: I want to have a 2x2 panel figure with 4 line graphs all in the same scale. Actually I have that. The thing I seem to be lacking is a way to Label each panel with a letter. I want it to look something like this: http://www.nature.com/npp/journal/v31/n9/images/1301015f3.gif I am using linux and I'm not even entirely sure if I've done this in a best practices sort of way but here is the code that I've entered so far to make my figure: library(sciplot) postscript('PreferenceGraph2x2.eps') par(mfrow = c(2,2), pin=c(6.45669292,6.45669292), pty=&...