是否可以在R Markdown/knitr中创建伪代码的代码块？

Question

我尝试过使用反引号和波浪号,但它们需要语言.我只想要一个带有突出显示背景的纯文本代码块.

使用eval=FALSE和tidy=FALSE工作直到达到关键字,例如if,后续代码将在.Rmd文件和输出PDF中突出显示颜色.不通过选项指定语言会删除背景突出显示输出中的代码的功能.

```{r, eval=FALSE,tidy=FALSE}
loop through each species
    loop through each measurement of the current species
         if measurement ...
etc.
```

Answer 1

这里有一些示例代码可以很好地呈现给HTML.它还可以正确呈现Word和PDF.

---
title: "Untitled"
output: html_document
---

Here is some plain text.

Next, let's write some pseudo code.  Note that you don't _have_ to specify a language if using plain backticks.

```
object <- [some kind of calculation]
```

If you set `eval = FALSE` you can get the highlighted background

```{r, eval = FALSE}
object <- [some kind of calculation]
Note that this; is not valid R code
```

You may find it interesting that your example works just fine for me.

```{r, eval=FALSE}
loop through each species
    loop through each measurement of the current species
    ...
etc.
```