上图的标题使用 knitr (LaTeX/PDF) [英] Caption above figure using knitr (LaTeX/PDF)

问题描述

我想在 texmaker 中使用 knitr 将标题放在图上方.我知道这个问题已经被问过了，并且我知道到目前为止建议的解决方案是使用:

I would like to place the caption above the figure using knitr in texmaker. I know that this question has already been asked, and I understand that the solution suggested so far is to use:

egin{figure} 
caption{This is a caption above the figure} 
<<a-plot, echo=FALSE>>= 
plot(1) 
@ 
end{figure} 

但这样我无法显示代码(因为 echo=FALSE).如果我选择 echo=TRUE，我得到的是标题，然后是代码，然后是图表，这也不是我想要的.我想展示的是 R 的代码，(and)用该 R 代码绘制的图形，带有标题 在图表上方.

But in this way I cannot show the code (since echo=FALSE). And if I choose instead echo=TRUE, what I get is the caption, then the codes, and then the graph, which is also not what I want. What I would like to show is the code for R, (and) the graph plotted with that R code, with the caption above the graph.

推荐答案

尝试使用钩子:

<<include=FALSE>>=
f <- function(x, options) {
  paste("\end{kframe}
", 
        "\caption{", options$capT, "}
", 
        hook_plot_tex(x, options), 
        "
\begin{kframe}", sep = "")
}
knit_hooks$set(plot = f)
@

egin{figure} 
<<a-plot, echo=TRUE, capT="cap, cap, and cap">>= 
plot(1) 
@ 
end{figure} 

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