Most R beginners think that developing an R package is a mission impossible. It is not true. With the new function packr() , users can create a user-defined useful R packages easily. They can specify in packr()a group of packages (e.g. foo_1, foo_2, foo_x) which they often use and the new package name, say foobar, then a new package called foobar will be generated.
When loading the foobar function, the package group, i.e. foo_1, foo_2, and foo_x are loaded simultaneously. Moreover, a few functions are available in the …