如何使用rmarkdown和pandoc在表中写入（项目符号）列表

Question

我正在使用rmarkdown，knitr和pander在PDF文档中创建表格。该表应与下面的表1几乎相同，除了星号应为项目符号。仅使用上面列出的R库，这完全可能吗？

这是我生成PDF文档的代码（因此是上表）：

---
title: "xxx"
author: "xxx"
date: "xxx"
output:
  word_document: default
  pdf_document:
    fig_height: 4
    fig_width: 10
    highlight: tango
geometry: margin=3cm
---

```{r global_options, include=FALSE, echo=FALSE}
require(knitr)
opts_chunk$set(fig.width=8, fig.height=4, fig.path='figs/', dpi=500,
               echo=FALSE, warning=FALSE, message=FALSE, results='hide')
```

```{r pandoc_options, include=FALSE, echo=FALSE}
require(pander)
panderOptions('digits', 3)
panderOptions('round', 3)
panderOptions('keep.trailing.zeros', TRUE)
panderOptions('keep.line.breaks', TRUE)
```

```{r concepts, echo=FALSE}
mytable = data.frame(Concept = c("Decoded", "XXX"), 
                     Description = c(" 
                                     \\\n
                                     \\\n * Founded in 2011 
                                     \\\n * * Offers workshops to take people from zero skills and knowledge in programming through to coding a multi-platform app using HTML, CSS and Javascript in a single day 
                                     \\\n * * Rave reviews", "XXX"), 
                     Website = c("http://decoded.com/uk/","XXX"))

```

``` {r concepts_descriptions, results = 'asis'}
pandoc.table(mytable, style = "multiline", justify = "left", caption = "Concepts and Descriptions")
```

EDIT @Roman对此表示感谢-但是，如果我直接替换，我会得到以下不太漂亮的表（“句号”项目符号，格式不正确）...对我而言，最重要的是列表附带的格式。谢谢！

Answer 1

默认的multiline样式表不支持arbitrary block elements inside of the cells，但grid表支持。因此这是可能的，只需确保：

• 您使用grid样式
• 将单元格对准left
• 在列表元素的末尾使用硬线换行并启用keep.line.break

快速演示：

mytable = data.frame(
    Concept     = c("Decoded", "XXX"),
    Description = c("* Founded in 2011\ \n* Offers workshops to take people from zero skills and knowledge in programming through to coding a multi-platform app using HTML, CSS and Javascript in a single day", "XXX"),
    Website     = c("http://decoded.com/uk/","XXX"))

pander::pander(mytable, keep.line.breaks = TRUE, style = 'grid', justify = 'left')

通过pandoc生成格式正确的HTML列表：

<table>
<colgroup>
<col width="13%" />
<col width="43%" />
<col width="30%" />
</colgroup>
<thead>
<tr class="header">
<th align="left">Concept</th>
<th align="left">Description</th>
<th align="left">Website</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td align="left">Decoded</td>
<td align="left">* Founded in 2011 * Offers workshops to take people from zero skills and knowledge in programming through to coding a multi-platform app using HTML, CSS and Javascript in a single day</td>
<td align="left">http://decoded.com/uk/</td>
</tr>
<tr class="even">
<td align="left">XXX</td>
<td align="left">XXX</td>
<td align="left">XXX</td>
</tr>
</tbody>
</table>

但也适用于PDF：