How can I add notes to the bottom of a table using knitr::kable?

Question

LaTeX has the ability to add notes to the bottom of a table using tablenotes, so it seems like kable might be able to easily implement this -- or maybe it already does, but I can't find any mention of this capability.

For example:

Answer 1

You can actually do exactly this using Hao Zhu's awesome kableExtra package! As follows:

library(knitr)
library(kableExtra)
dt <- mtcars[1:5, 1:4]

# LaTeX Table
 kable(dt, format = "latex", booktabs = T) %>%
   kable_styling() %>%
   add_footnote("Footnote 1", notation="alphabet")

Check out the GitHub repository for the full scope of everything kableExtra can do. It greatly extends the functionality of tables within both LaTeX and HTML with loads of extra features.