Rmarkdown的使用

在windows上使用Rstudio写Rmarkdown文档。Rmarkdown文档可以被转为html,word,pdf,markdown.
需要先安装miktex,配置好环境变量。https://miktex.org/download （如果没有安装，pdf输出会报错）
因为pdf的输出需要调用Latex排版系统，如果没有安装Latex就会报错。而且对中文不友好，如果文档有中文，还得安装ctex.(目前没有解决此问题，仍然无法输出中文)
新建文件first.Rmd文件内容如下，点击Knit按钮，

---
title: "First R markdown"
author: "Pet Zhu"
date: "2021/5/12"
output:
  pdf_document: default
  html_document: default
  word_document: default
---

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

## R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see .

When you click the **Knit** button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

```{r cars}
summary(cars)
```

## Including Plots

You can also embed plots, for example:

```{r pressure, echo=FALSE}
plot(pressure)
```

Note that the `echo = FALSE` parameter was added to the code chunk to prevent printing of the R code that generated the plot.



>  ----by Lu Xun

tinytex::install_tinytex()

## Rmmarkdwon markdown

    library(rmarkdown)
    md_document(
      variant = "markdown_strict",
      preserve_yaml = FALSE,
      toc = FALSE,
      toc_depth = 3,
      fig_width = 7,
      fig_height = 5,
      fig_retina = NULL,
      dev = "png",
      df_print = "default",
      includes = NULL,
      md_extensions = NULL,
      pandoc_args = NULL,
      ext = ".md"
    )

    render("test.Rmd", md_document())
    #render("test.Rmd", md_document(variant = "markdown_github"))

选择Kniit to HTML

输出的html页面

---

Rmarkdown可以输出的格式有

• beamer_presentation
• context_document
• github_document
• html_document
• ioslides_presentation
• latex_document
• md_document
• odt_document
• pdf_document
• powerpoint_presentation
• rtf_document
• slidy_presentation
• word_document

需要注意：会自动生成文件夹存放，Rmd生成的图片。

同时输出上面新建的first.Rmd到html，pdf,word格式

rmarkdown::render('first.Rmd',c('html_document','pdf_document','word_document'))
rmarkdown::render('first.Rmd',"all") 取决于你在first.Rmd里yaml定义的outpput的格式，会把这里面的格式都输出。

只输出到html

rmarkdown::render('first.Rmd',c('html_document'))

输出到markdown

rmarkdown::render('helloworld.Rmd',"md_document")

输出到github格式（会同时输出html,md格式）

rmarkdown::render('helloworld.Rmd',"github_document")

---

R有专门bookdown和blogdown,可以用Rstudio快速生成电子书和博客。

R bookdown