如何在Rstudio中为markdown + knitr定制一个css？

Question

I want to change the default style sheet for the KnitHTML function in RStudio 0.96.331 .

I follow the instructions in this post .

First I copy past the original markdown.css from here . As a test I change the first few lines from:

body, td {
font-family: sans-serif;
background-color: white;
font-size: 12px;
margin: 8px;
}

to red background

body, td {
font-family: sans-serif;
background-color: red;
font-size: 12px;
margin: 8px;
}

and save it as mymd.css in my working directory. I then create a style.R file as follows:

options(rstudio.markdownToHTML =
  function(inputFile, outputFile) {     
    require(markdown)
    markdownToHTML(inputFile, outputFile, stylesheet='mymd.css')  
  }
)

Finally, I source the style.R file by clicking source and then go back to the .Rmd file and knit it to HTML. I get the red background, but the math is not compiled eg $\alpha$

Answer 1

AFAIK，MathJax service was down yesterday due to the GoDaddy outage. Can you confirm the math problem was not due to that?

Answer 2

So I may have a work around for you, but it involves using pandoc :

Suppose your style sheet is called style.css

Source the following code:

options(rstudio.markdownToHTML = function(inputFile, outputFile) {
        system(paste("pandoc -c style.css", shQuote(inputFile),
                     "-o", shQuote(outputFile)))
          }
        )  

Answer 3

This is maybe a new feature that was not available at the time the question was asked. However, there is a simple solution I found here:

https://bookdown.org/yihui/rmarkdown/html-document.html#appearance-and-style

In the preamble of your.Rmd, just write this:

---
title: "Your title"
output: 
  html_document:
    css: yourstylefile.css
---