rmarkdown 图未出现在 pdf 上

Question

我使用 rmarkdown 创建一组幻灯片。我使用乳胶

includegraphics

添加了一个图形，它按预期工作。但是，当我添加通过 R 代码生成的图形时，“乳胶”图形消失了。

最小代码示例

---
title: "TITLE"
author: "JS"
subtitle: SUBTITLE
output:
  beamer_presentation: 
    keep_tex: yes
  ioslides_presentation: default
fontsize: 14pt
---



# Example 

\begin{figure}[t]
  \centering
  \includegraphics[scale=0.25]{include_figure}
\end{figure}

---

# Add figure via R code

```{r, message = FALSE, warnings = FALSE, eval = TRUE, echo = TRUE}
plot(rnorm(100))

有什么建议我做错了吗？

Answer 1

---
title: "TITLE"
author: "JS"
subtitle: SUBTITLE
output:
  beamer_presentation: 
    keep_tex: yes
  ioslides_presentation: default
fontsize: 14pt
---



# Example 

\begin{figure}
  \includegraphics[height=4cm]{example-image-duck}
\end{figure}

---

# Add figure via R code

```{r, message = FALSE, warnings = FALSE, eval = TRUE, echo = TRUE}
plot(rnorm(100))
```