如何在适用于pdf和html输出的书本文档的表格标题中插入引用

Question

我使用bookdown生成html和pdf格式的文档。如何在表格标题中插入对文档部分的引用？

使用\\ref{sec:FirstSection}pdf_book可以正常工作（但gitbook不能）：

---
title: "Test"
output: bookdown::pdf_book
---

# A section {#sec:FirstSection}
The dataset in Table \@ref(tab:aTable) contains some data.

# Another section
```{r, aTable, echo = FALSE}
knitr::kable(
  cars[1:5, ],
  caption  = "See Section \\ref{sec:FirstSection}."
)
```

同时使用\\@ref(sec:FirstSection)gitbook可以正常工作（但pdf_book不能）

---
title: "Test"
output: bookdown::gitbook
---

# A section {#sec:FirstSection}
The dataset in Table \@ref(tab:aTable) contains some data.

# Another section
```{r, aTable, echo = FALSE}
knitr::kable(
  cars[1:5, ],
  caption  = "See Section \\@ref(sec:FirstSection)."
)
    ```

Answer 1

您可以使用文本引用，即bookdown提供的Markdown扩展。

---
title: "Test"
output: bookdown::gitbook
---

# A section {#sec:FirstSection}

The dataset in Table \@ref(tab:aTable) contains some data.

# Another section

(ref:aTable-caption) See Section \@ref(sec:FirstSection).

```{r, aTable, echo = FALSE}
knitr::kable(
  cars[1:5, ],
  caption  = "(ref:aTable-caption)"
)
```