There are several ways of getting you free time to help other people. In his free time, Thomas L. Pedersen made this amazing R package called ggraph, which is built on top of ggplot2. This extension aims to handle relational data structures such as networks, trees, and graphs.
Most of the packages dealing with relational data focus only on one type of representation using different APIs; to handle many types would require you to learn several different packages. The advantage of using ggraph is that this package covers a wide variety of relational representations, all under the same ggplot2 API.
ggraph covers lots of different types of data objects such as hclust, network, dendogram, and igraph. It can design plots in a very interactive way based on three basic concepts: layouts, nodes, and edges. I really hope you look...
