Below is a cheat sheet, easily searchable by task, to see just how to do some of favorite and most-used ggplot2 options ... Line graph + geom_line(aes(color=mycategory)) Set color of points ...

adding color. If you’d like to follow along, I suggest installing the development version of ggplot2 from GitHub. In general, some things shown at the conference weren’t on CRAN yet.