The @{} specification in tabular works with any table. It's not specific to the booktabs package.
Here's an example with \fboxes around the table to show the boundaries.
\documentclass{article}
\begin{document}
\fbox{\begin{tabular}{ll}
foo & bar\\
bar & foo
\end{tabular}}
\fbox{\begin{tabular}{@{}ll@{}}
foo & bar\\
bar & foo
\end{tabular}}
\end{document}
Looking at the knitr option docs and following it to an example code, it seems that you'd just redefine the \subfloat-command, like this: \newcommand{\subfloat}[2][need a sub-caption]{\subcaptionbox{#1}{#2}}.
Here is an example:
\documentclass{article}
\usepackage{subcaption}
\newcommand{\subfloat}[2][need a sub-caption]{\subcaptionbox{#1}{#2}}
\begin{document}
<<someChunk,cache=T,echo=F,tidy=F, fig.subcap=c("Subfig1", "Subfig2") , fig.cap="TITLE", out.width='.49\\linewidth'>>=
x=seq(1:10)
plot(x,x)
plot(x,x^2)
@
\end{document}
Although, it might be some other way to actually use an environment instead of a command to display figures, I didn't find any. Yet.
Also note that fig.env only sets the "parent" environment, like \begin{figure}, so it seems that if you want to use fig.env, you'd have to do it in separate environments, something like this:
\begin{figure}
<<someChunk,cache=T,echo=F,tidy=F, fig.subcap=c("Subfig1", "Subfig2") , fig.cap="TITLE", out.width='.49\\linewidth', fig.env=c('subfigure')>>=
x=seq(1:10)
plot(x,x)
@
<<someChunk,cache=T,echo=F,tidy=F, fig.subcap=c("Subfig1", "Subfig2") , fig.cap="TITLE", out.width='.49\\linewidth', fig.env=c('subfigure')>>=
x=seq(1:10)
plot(x,x^2)
@
\end{figure}
The latter example won't work, since subfigure needs an argument, and I'm not really sure how to do that.
Best Answer
This question was crossposted at Stack Overflow and got an answer from Gregor that helped the OP.
Looking at the source of
kable, it callsknitr:::kable_latexif you're using LaTeX. Then, looking at that source, it has the following argument and default:So, I'm guessing if you explicitly pass
you'll get spaces every 4 lines as desired.