I am quite in doubt about which table formatting package to use, being xtable and stargazerthe alternatives.
I find Stargazer easier to understand when building tables - specially if a need to use column spanning. However, I do not know how to make stargazer tables in the booktabs shape. Is there a way to do so, as in xtable?
Alternatively, how can I use xtable in a way that it is easy to format spanning columns?
The stargazer-booktabs package is a stargazer fork which adds support for the LaTeX booktabs package.
As stated on the package's webpage:
In contrast to the main package, this fork outputs tables which use the booktabs commands
\toprule\midruleand\bottomrrule[sic] for horizontal rules.
Again from the package's github page, it can be installed as follows:
install.packages("devtools")
library(devtools)
install_github("markwestcott34/stargazer-booktabs")
The package's vignette provides a few examples of regression tables.