R markdown/bookdown - 如何在摘要下方显示关键字？

Question

我在 .Rmd 文件中定义了关键字，但它们在输出 PDF 中不可见。

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电流输出

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预期结果

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当前.Rmd

.Rmd 文件的第一行如下所示:

---
title: "No keywords within the output file"
abstract: "This is sample text for abstract. Generally speaking, I would like to show keywords list below an abstract (as in case of the linked example)"
keywords: "keywordA, keywordB"
author: "Mateusz Kędzior"
output: 
  bookdown::pdf_document2:
    keep_tex: true
    number_sections: yes
    toc: false
base_format: rticles::elsevier_article
---

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

## Elsevier article

This is an R Markdown document.

I'm trying to prepare an Elsevier article. 

Answer 1

我想知道base_format是否真的在你的示例中做了任何工作(无论有没有base_format，输出看起来都是一样的)。由于 base_format 是 pdf_book 的参数，请考虑将 YAML header 更改为

---
title: "No keywords within the output file"
author: 
- name: "Mateusz Kędzior"
abstract: "This is sample text for abstract. Generally speaking, I would like to show keywords list below an abstract (as in case of the linked example)"
keywords: "keywordA, keywordB"
output: 
  bookdown::pdf_book:
    keep_tex: true
    number_sections: yes
    toc: false
    base_format: rticles::elsevier_article
---

这将为您提供以下输出:

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或者，向摘要添加关键字:

    abstract: "This is sample text for abstract. Generally speaking, I would like
 to show keywords list below an abstract (as in case of the linked example) \\par
 \\textbf{Keywords:} a, b"

获取