在文档中显示knitr代码块源
我试图将一个针织大块的来源输出到投影仪幻灯片上。
例如,我想要在.Rnw中显示下面的代码块:
<<code-chunk, echo=TRUE, tidy=TRUE>>=
@
我试图重新使用以下行为:
<<out-first-code-chunk, echo=FALSE, comment=NA>>=
cat(paste("<<example-code-chunk, echo=TRUE, tidy=TRUE>>=","@",sep="n"))
@
这个代码是合法的,因为R的控制台中的cat命令给出了:
> cat('<<example-code-chunk, echo=TRUE, tidy=TRUE>>=','@',sep='n')
<<code-chunk, echo=TRUE, tidy=TRUE>>=
@
但是,所得到的乳胶:
begin{frame}
frametitle{Code Chunk}
To incorporate R code into your knitr documents
begin{knitrout}
definecolor{shadecolor}{rgb}{0.969, 0.969, 0.969}color{fgcolor}begin{kframe}
begin{verbatim}
<<example-code-chunk, echo=TRUE, tidy=TRUE>>=
@
end{verbatim}
end{kframe}
end{knitrout}
引发错误:
<<example-code-chunk, echo=TRUE, tidy=TRUE>>= @ end {verbatim} end
ETC. ! Paragraph ended before @xverbatim was complete. <to be read
again> par l.198 end{frame} I suspect you've forgotten a `}',
causing me to apply this control sequence to too much text. How can we
recover? My plan is to forget the whole thing and hope for the best. !
LaTeX Error: begin{verbatim} on input line 198 ended by
end{beamer@framepau ses}. See the LaTeX manual or LaTeX Companion for
explanation. Type H <return> for immediate help. ... l.198 end{frame}
Your command was ignored. Type I <command> <return> to replace it with
another command, or <return> to continue without it. ! LaTeX Error:
begin{kframe} on input line 198 ended by end{beamer@frameslide }.
为什么胶乳环境认为逐字未关闭? 是否有一种更恰当的方式来显示整个代码块?
这应该做到这一点...
设置块中有1行,输出块需要1个额外的参数...
安慰:
`install.packages(devtools)`
`devtools::install_github("thell/knitliteral")`
对于.Rnw
:
<<"knitr-setup", include=FALSE, cache=FALSE>>=
knitLiteral::kast_on()
@
<<"my_chunk", eval=FALSE, opts.label="literal-literal">>=
# Something that will not be output in the doc.
@
输出:
<<"my_chunk", eval=FALSE>>=
@
对于.Rmd
:
````{r knitr_setup, include=FALSE, cache=FALSE}
knitLiteral::kast_on()
````
````{r my_chunk, opts.label="literal-literal"}
# Something that will not be output in the doc.
````
输出:
````{r my_chunk}
````
**使用4个反引号将语法高亮显示为有效的R
(在哪里使用)。
从这个块,以及您可以在Literal Markdown文档示例的源代码中看到的内容以及不需要复杂块的渲染文档。
sweave示例文件也可以显示相同的示例。
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