opts

本文介绍了opts_current:如何在knitr中工作?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我试图在不同的块中设置不同的图形尺寸.我首先使用以下命令定义全局设置:

I am trying to set up different figure size in different chunks. I first define a global settings using:

opts_chunk$set(fig.width=7, fig.height=7)

然后，对于特定的块，我使用:

Then, for the specific chunks, I use:

opts_current$set(fig.width=7, fig.height=14)

但是后者总是被忽略.那么，opts_current到底如何工作?

But the later is always neglected. So, how does opts_current really work?

推荐答案

对于特定的代码块，请将块选项放在块头中，例如

For specific code chunks, put the chunk options in the chunk header, e.g.

```{r fig.width=7, fig.height=14}

这些称为本地组块选项，它将覆盖全局组块选项(临时针对此特定组块).

These are called local chunk options, which will override global chunk options (temporarily for this specific chunk).