将下划线作为内联代码传递给knitR [英] Pass underscore as inline code to knitR

问题描述

我正在使用knitR生成文档.有些变量名带有下划线，我不能更改.无论如何仍要以普通文本的形式插入这些内容?

I'm using knitR to generate a document. Some of the variable names have underscores that I can't change. Anyway to still insert these as normal text?

基本示例:

\documentclass{article}
\begin{document}
<<>>=
data.df = data.frame(var_name_1=c(0,1),var_name_2=c(1,2))
@
I want to be able to print \Sexpr{(names(data.df)[1])} and \Sexpr{(names(data.df)[2])} normally.

\end{document}

提前感谢您的帮助.

推荐答案

一种合适的解决方法是在代码块中定义函数rep_. rep_只是寻找下划线，并在其前放置一个"\".

A suitable work around is to define the function rep_ in the code block. rep_ just looks for the underscore and places a "\" before it.

\documentclass{article}
\begin{document}
<<>>=
data.df = data.frame(var_name_1=c(0,1),var_name_2=c(1,2))
rep_ = function(test){gsub("([_])", '\\\\\\_', "test_var")}
@
I want to be able to print \Sexpr{rep_((names(data.df)[1]))} and \Sexpr{rep_((names(data.df)[2]))} normally.

\end{document}

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