RMarkdown：LaTeX輸出中空格處的浮動位置

Question

當在RMarkdown的兩個段落之間包含圖形的代碼時，該代碼產生的浮點數可能會放置在文檔的其他位置，從而在LaTeX / PDF輸出文件中的段落之間留有空間。

以下最小示例說明了此問題：

---
output: pdf_document
---

This is my first paragraph. 
Next in the Rmd file would be the code for the figure.  
The figure is correctly treated as a float by LaTeX, meaning that LaTeX will put it to the next suitable position.
```{r pressure, echo=FALSE, fig.cap="Example", out.width='0.5\\textwidth', fig.pos='B'}
  plot(pressure)
```
The problem now is, that this leaves space to my second paragraph.
Usually, this should not be the case.
In pure LaTeX, there is a linebreak, of course, but no vertical space in addition.

Answer 1

如果將\\vspace{-\\parsep}放在以下文本的開頭，則會得到換行符而沒有多余的空間。 那是，

---
output: pdf_document
---

This is my first paragraph. 
Next in the Rmd file would be the code for the figure. 
The figure is correctly treated as a float by LaTeX, meaning that LaTeX will put it to the next suitable position.
```{r pressure, echo=FALSE, fig.cap="Example", out.width='0.5\\textwidth', fig.pos='B'}
  plot(pressure)
```
\vspace{-\parsep}The problem is now fixed.

我沒有其他方法可以這樣做： knitr在生成LaTeX時在圖形環境周圍放置空白行。