Question

我想做以下工作

---
title: "Untitled"
author: "SQC"
date: "21 September 2018"
output: html_document
---

\newcommand{\short}{AreallylongwordIhavetotypefrequently}

# My Test
I would like to write \short which does not work, $\short$ however is close... 
Snippets do not work in Rmd plain text (= Rstudio's "Shift", see link below).

但是我找不到解决方案。如果周围有东西，那就太好了！以下链接是有用的，但没有提出解决方案：pandoc doc，\newcommand in Rmd formula和RStudio snippets。

Answer 1

如何改用R：

---
title: "Untitled"
author: "SQC"
date: "21 September 2018"
output: html_document
---

```{r, include = FALSE}
short <- "AreallylongwordIhavetotypefrequently"
```

# My Test
I would like to write `r short` instead ...

Answer 2

如果您仍然需要在Rmarkdown中使用LaTeX定义\newcommand，则可以例如通过

Some text with the following equation:

\begin{equation} \newcommand{\matr}[1]{\mathbf{#1}}
\matr{Y} =
\begin{pmatrix}
\matr{y_1} \\
\matr{y_2} \\
\end{pmatrix}
\end{equation}

```{r}
y1 + y2
```

请注意，必须加载bm软件包才能使其正常运行，例如，通过在YAML标头中使用以下软件包：

---
title: "My R Report" 
author: "Me" 
date: "2020-01-31" 
header-includes: 
  - \usepackage{bm} 
output: 
  pdf_document: 
    toc: true 
    number_sections: true
---

如何在Rmd中使用Latex的\ newcommand？

2 个答案: