Chapter 18 Concluding remarks
There are other useful packages that can be used with ggplot2!
To name a few: ggbio, ggpmisc, geomnet, gganimate, ggnetwork and ggtree. Have a look at www.ggplot2-exts.org for other ggplot2 extensions.
Note that you can learn more about design and image manipulation with the QCBS workshop “Introduction to graphic design and image manipulation with open source tools”.