How to annotate across or between plots in multi-plot panels in R

Question

If I have several plots in a single panel, I would like to be able to put text annotations that go across more than one plot area or that go in between plot areas. I\'m sure

Answer 1

You want to use mtext with outer=TRUE. For instance, mtext('Results2', side=1, line=-2, outer=TRUE) and mtext('Results1', side=3, line=-20, outer=TRUE).