从pdf的R markdown旋转表格 [英] Rotate a table from R markdown in pdf

问题描述

我正在用R Markdown编写，并且具有很大的列联表.我正在使用pandoc将R markdown文档转换为PDF.

I'm writing in R Markdown and have a contingency table that is quite wide. I am converting the R markdown document to a PDF using pandoc.

是否可以旋转或收缩桌子?理想情况下，无需切换为LaTeX格式即可完成此操作.

Is it possible to rotate or shrink the table? Ideally this would be done without having to switch to LaTeX formatting.

我的尝试:

我一直在滥用knitr中的Figure选项来尝试这种操作，但是无论我使用kable还是xtable，我都没有任何运气.我尝试过的一些排列包括:

I've been abusing the figure options in knitr to attempt this, but whether I use kable or xtable, I haven't had any luck. Some permutations I have tried include:

```{r out.extra='angle=90', results='asis'}
library(knitr)
kable(iris[1:5,])
``` 

``{r size='footnotesize', results='asis'}
library(knitr)
kable(iris[1:5,])
```

```{r out.extra='angle=90', results='asis'}
library(xtable)
xtable(iris[1:5,])
```

```{r size='footnotesize', results='asis'}
library(xtable)
xtable(iris[1:5,])
```  

所有这些都很好地显示了表格，但不要旋转表格.

All of these show the table nicely, but do not rotate it.

我用来编织的代码是:

Rscript -e "library(knitr); knit('table.Rmd', 'table.md')"

并转换为pdf:

pandoc table.md -o table.pdf

推荐答案

out.extra='angle=90'仅适用于图形，但不适用于表格.以下是几种可能的方法:

The out.extra='angle=90' only works on Figures, and unfortunately not tables. Here are several potential approaches:

KableExtra(旋转页面)

您可以使用有用的附加程序包kableExtra轻松旋转表.具体来说，landscape()函数会将表格放在单个横向页面上.对于无法放置的宽表很有用 可以打印在纵向页面上.

You can easily rotate tables using the useful addon package kableExtra. Specifically, the landscape() function will put the table on an single landscape page. It’s useful for wide tables that can’t be printed on a portrait page.

library(kableExtra)

kable(iris[1:5,],
      format = "latex", booktabs = TRUE) %>%
  kableExtra::landscape()

这些功能的局限性在于它会强制生成新页面，因此根据表的大小，它可能会留出一些空白.

The limitation of these function is that it does force a new page, so depending on the size of your table it could leave a bit of blank space.

KableExtra(比例宽度)

您可以使用功能kable_styling(latex_options = "scale_down")缩放表格的宽度.这将迫使表格达到页面的宽度.

You can scale the width of the table using the function kable_styling(latex_options = "scale_down"). This will force the table to the width of the page.

   kable(iris[1:5,],
          format = "latex", booktabs = TRUE) %>%
          kable_styling(latex_options = "scale_down")

有关kableExtra软件包的更多示例，请在此处查看该软件包: https://haozhu233. github.io/kableExtra/awesome_table_in_pdf.pdf

观星台(旋转桌)

还可以使用其他选项，但是这些选项在很大程度上需要安装其他LaTeX软件包.例如，stargazer程序包可以使用float.env参数以横向打印表格:

Other options are available, but these largely require the installation of additional LaTeX packages. For example, the stargazer package can print tables in landscape using the float.env argument:

```{r, results="asis"}
stargazer(iris[1:5,], 
          float.env = "sidewaystable")
```

这需要LaTeX序言中的\usepackage{dcolumn}

This requires \usepackage{dcolumn} in LaTeX preamble

在此处了解有关自定义LaTex序言的更多信息: https: //tex.stackexchange.com/questions/171711/how-to-include-latex-package-in-r-markdown

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