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我正在尝试使用 R/bookdown 构建一本书，但在使用 tufte_html_book 或 html_book 生成 html 版本时遇到了问题：

Error in split_chapters(output, page_builder, number_sections, split_by,  : 
  The document must start with a first (#) or second level (##) heading

这本书在 gitbook 或 tufte_book2 输出中正确生成。该文档有四个文件index.Rmd, 01-Chap1.Rmd, 02-Chap2.Rmd, 03-Chap3.Rmd. 我喜欢保持清晰，所以index.Rmd只包含 YAML 标头，加上一些 R 代码但没有标题，这可能是产生错误的原因。有没有办法让 bookdown 的 html 输出行为类似于 gitbook 或 pdf 输出？

这是一个可重现的小例子：

索引.Rmd：

---
title: "Tufte Handout"
subtitle: "An implementation in R Markdown"
author: "JJ Allaire and Yihui Xie"
date: "`r Sys.Date()`"
site: bookdown::bookdown_site
output:
  bookdown::tufte_html_book:
    toc: yes
bookdown::tufte_book2:
    toc: yes
---

```{r setup1, include=FALSE}
library(tufte)
# invalidate cache when the tufte version changes
knitr::opts_chunk$set(tidy = FALSE, cache.extra = 
packageVersion('tufte'))
options(htmltools.dir.version = FALSE)
```

01-Chap1.Rmd

# Introduction

The Tufte handout style is a style that Edward Tufte uses in his books and handouts. Tufte's style is known for its extensive use of sidenotes, tight integration of graphics with text, and well-set typography. This style has been implemented in LaTeX and HTML/CSS^[See Github repositories [tufte-latex](https://github.com/tufte-latex/tufte-latex) and [tufte-css](https://github.com/edwardtufte/tufte-css)], respectively. We have ported both implementations into the [**tufte** package](https://github.com/rstudio/tufte). If you want LaTeX/PDF output, you may use the `tufte_handout` format for handouts, and `tufte_book` for books. 
For HTML output, use `tufte_html`. These formats can be either specified in the YAML metadata at the beginning of an R Markdown document (see an example below), or passed to the `rmarkdown::render()` function. See @R-rmarkdown more information about **rmarkdown**.
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1 回答 1

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我在回答我自己的问题。

gitbook 和 (tufte_)html_book 之间的行为差​​异在于 split_by 参数，该参数split_by="chapter"在 gitbook 和split_by="section"(tufte_)html_book 中。添加split_by: chapter到bookdown::tufte_html_book:yaml 部分允许无错误地构建 html。

于 2017-10-09T09:58:53.287 回答