We list below other resources that augment the material we have
presented in this chapter.
Xie (2014) delves much further into knitr and
LaTeX and other document formats supported by knitr.
Gandrud (2014) delves not only into
knitr, LaTeX, R and , but also the suite of tools
available for the professional data scientist, including utilities
such as make, git, and shell.
http://yihui.name/knitr/ is knitr's home. This includes
documentation on knitr and useful discussion
forums.
LaTeX supports many characters and symbols but finding the
right incantation is difficult. This web site,
http://detexify.kirelabs.org/classify.html, does a great
job. Draw the character you want and it will show you how to get it
.