[Tex/LaTex] Texstudio and Rnw Files

knitrtexstudio

Is there any way in Texstudio, for the document tree to detect Rnw files called within a knitr chunk?

For example, the following would be ignored:

<<MYCHUNK,child='./Myfile.Rnw'>>=
@

However, the following is a bit of a hack, the commented out input command still gets picked up in the tree, but naturally, it isn't used when the document is typeset.

<<MYCHUNK,child='./Myfile.Rnw'>>=
@
%\input{./Myfile.Rnw}

Even though the above workaround does the job, it is annoying me having all these commented out files scattered around my documents….

Incidentally, if someone from Texstudio is reading this, one of the great features of Texstudio is the search feature within the document preview, ie you can search, then press alt and click on any word and it will take you to the exact point in the source file, however, this is problematic when Rnw files are involved, since it takes you to the .tex equivalent of the Rnw file, not the Rnw file which ultimately "produces" the tex file.

Best Answer

TeXstudio is mainly focused on LaTeX. Rnw is only supported in the syntax highlighting (because this was quite easy to implement), but it is not explicitly handled in the semantic parsing or the workflow.

You cannot make TeXstudio recognize these commands without modifying the source code, because these things are partly hard-coded into TXS.

Of course, you are welcome to post a feature request at http://sourceforge.net/p/texstudio/feature-requests/. But since we have limited resources, I cannot comment if and when we'll implement this.

Option 1: Using `knit_child()` with inline R code

Say your setup is like the following. In the same directory, you have:

`graph.R`

## ---- graph
library(ggplot2)
CarPlot <- ggplot() +
    stat_summary(data= mtcars,
                 aes(x = factor(gear),
                     y = mpg
                 ),
                 fun.y = "mean",
                 geom = "bar"
                 )
CarPlot

`chapter1.Rnw`

Hey, look, a graph (Figure~\ref{fig:graph})!

<<graph, echo=FALSE, message=FALSE, fig.lp='fig:', out.width='.5\\linewidth', fig.align='center', fig.cap="A graph", fig.pos='h!'>>=
@

`main.Rnw`

\documentclass{article}

\begin{document}

<<external-code, echo=FALSE, cache=FALSE>>=
read_chunk('./graph.R')
@

\Sexpr{knit_child('chapter1.Rnw')}

\end{document}

Then, you can knit the main.Rnw file and compile the resulting .tex file with either pdflatex or xelatex.

The output is:

enter image description here

Note that you can also read the external .R file from the child .Rnw file.

So, the following would have worked just as well.

`chapter1-mod.Rnw`

<<external-code, echo=FALSE, cache=FALSE>>=
read_chunk('./graph.R')
@

Hey, look, a graph (Figure~\ref{fig:graph})!

<<graph, echo=FALSE, message=FALSE, fig.lp='fig:', out.width='.5\\linewidth', fig.align='center', fig.cap="A graph", fig.pos='h!'>>=
@

`main-mod.Rnw`

\documentclass{article}

\begin{document}

\Sexpr{knit_child('chapter1-mod.Rnw')}

\end{document}

Option 2: Using chunk option `child`

Assuming you have graph.R and chapter1.Rnw from above in the same directory, then your main.Rnw should be:

\documentclass{article}

\begin{document}

<<external-code, echo=FALSE, cache=FALSE>>=
read_chunk('./graph.R')
@

<<child-demo, child='chapter1.Rnw'>>=
@

\end{document}

Note that you can also read the external .R file from within the child document in this case, too.

So, assuming you had graph.R and chapter1-mod.Rnw from above in the same directory, then your main-mod.Rnw file should be:

\documentclass{article}

\begin{document}

<<child-demo, child='chapter1-mod.Rnw'>>=
@

\end{document}

[Tex/LaTex] Sublime Latexing and Knitr on .RNW files : Send lines to R console for evaluation

I had the same question, and I managed to fix it following this recommendation at least for latextools, it may be the same for latexing. /R/Main.sublime-menu file has to be edited:

(which in Ubuntu is in: ~/.config/sublime-text-3/Packages/SublimeREPL/config/R/Main.sublime-menu)

and the additional scope has to be modified in this way:

 "additional_scopes": ["tex.latex.knitr.ing"]

Best Answer

Related Solutions

[Tex/LaTex] Building TeX file from knitr Rnw as child of larger parent TeX file to use R objects and output

Option 1: Using knit_child() with inline R code

graph.R

chapter1.Rnw

main.Rnw

chapter1-mod.Rnw

main-mod.Rnw

Option 2: Using chunk option child