小编Use*_*014的帖子

我正在尝试在 R bookdown 项目中添加带有子标题的图形，如下所示

---
output:
  pdf_document:
    extra_dependencies: "subfig"
---
     
```{r  echo=F, out.width = "50%",fig.showtext=TRUE,fig.show='hold',fig.cap="TITULO"}
par(mfrow=c(1,2))
knitr::include_graphics("ts_mult.png") 
knitr::include_graphics("ts_ad.png") 
```

我得到以下结果

然后我尝试添加子标题（“imagen a”，“imagen b”），如下所示

```{r  echo=F, out.width = "50%",fig.showtext=TRUE,fig.show='hold',fig.cap="TITULO",fig.subcap=c("imagen a", "imagen b")}
par(mfrow=c(1,2))
knitr::include_graphics("ts_mult.png") 
knitr::include_graphics("ts_ad.png") 
```

但这不起作用，并引发以下错误

! Undefined control sequence.
<recently read> \subfloat 

Error: LaTeX failed to compile Tesis_AE.tex. See https://yihui.org/tinytex/r/#debugging for debugging tips.

如何正确添加子标题？