如何判断代码是否在knitr/rmarkdown上下文中执行? [英] how to tell if code is executed within a knitr/rmarkdown context?

问题描述

基于一些简单的测试，在rmarkdown::render()或knitr::knit2html()中运行代码时，interactive()为true.也就是说，一个简单的.rmd文件包含

Based on some simple tests, interactive() is true when running code within rmarkdown::render() or knitr::knit2html(). That is, a simple .rmd file containing

```{r}
print(interactive())
```

提供一个报告TRUE的HTML文件.

gives an HTML file that reports TRUE.

有人知道我可以在一个代码块中运行一个测试，该代码块将确定它是非交互式"运行的吗，我的意思是在knit2html()或render()内"?

Does anyone know of a test I can run within a code chunk that will determine whether it is being run "non-interactively", by which I mean "within knit2html() or render()"?

推荐答案

如 Yihui在github上建议 可用于检测代码是被编织还是以交互方式执行.

As Yihui suggested on github isTRUE(getOption('knitr.in.progress')) can be used to detect whether code is being knitted or executed interactively.

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