使用乳胶的Rmarkdown pdf生成中的图像大小控制 [英] Image size control in Rmarkdown pdf generation with latex

问题描述

我正在使用Rmarkdownv2生成带有一些本地图像的pdf文件.但是，与html相比，在渲染的pdf中，图片似乎已转换为具有较低分辨率的较大尺寸.我当前用于图像的代码是这样的: ![alt text](figures/fig1.png)

I'm using Rmarkdownv2 to generate a pdf file with some local images. But it seems that the image was converted to a larger size with lower resolution in the rendered pdf, compared to the html. The code I'm currently using for the image is something like: ![alt text](figures/fig1.png)

有什么方法可以控制pdf中的图像大小?我也尝试过

Is there any way to control the image size in the pdf? I also tried

pdf_document: fig_height: 1 fig_width: 2

pdf_document: fig_height: 1 fig_width: 2

但这没用.预先感谢.

推荐答案

您可以使用的开发版本knitr (> = v1.11.22)和include_graphics()函数，例如

You can use the development version of knitr (>= v1.11.22) and the include_graphics() function, e.g.

```{r out.width='70%'}
knitr::include_graphics('figures/fig1.png')
```

如果需要图形标题，只需使用块选项fig.cap = 'A figure caption.'

If you want a figure caption, just use the chunk option fig.cap = 'A figure caption.'

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