r - 如何使用 R markdown 在 Word 文档报告中创建网格表

Question

我能够使用 R markdown 生成具有简单表格的 Word 文档报告，但无法生成带有网格的表格的报告。

我试图创建一个可重现的代码。

---
title: "Unable to create table having grids"
output: word_document
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```

## R Markdown simple table

Tables             Are           Cool
-------------     -----------   -----------
col 3 is         right-aligned  $1600 
col 2 is         centered         $12 
zebra stripes    are neat         $1"


## Table Does Not have grids in it.

+--------------+---------------+---------+
|Tables        | Are           | Cool    |
+==============+===============+=========+
|col 3 is      | right-aligned | $1600   |
+--------------+---------------+---------+
|col 2 is      | centered      |   $12   |
+--------------+---------------+---------+