如何在 Rmarkdown 编译时跳过错误检查? [英] How to skip error checking at Rmarkdown compiling?

问题描述

我正在 RStudio 中编写 Rmarkdown 文档(编译为 HTML)，并且有一些代码块故意生成错误.例如:

I was writing an Rmarkdown document (compile to HTML) in RStudio, and there are some code chunks that deliberately generate errors. for example:

```{r}
sum(a)
```

因为之前没有对a 的定义，所以这个块自然会产生一个错误信息，比如object 'a' not found.我希望在最终的 HTML 文件中显示此错误消息，但是当我在 RStudio 中按 Ctrl+Shift+K 以编织 HTML"时，编译器报告错误并停止编织.

Since there is no previous definition for a this chunk will naturally generate an error message like object 'a' not found. I'd like this error message displayed in the final HTML file, but when I press Ctrl+Shift+K in RStudio to "Knit HTML", the compiler reported the error and stopped knitting.

那么如何告诉 knitr 在编译时忽略此类错误并将其显示在编织的 HTML 文档中?

So how can I tell knitr to ignore such error at compiling time and display it in the knitted HTML document?

推荐答案

Use error=TRUE: from knitr 块选项的描述,

Use error=TRUE: from the description of knitr chunk options,

error: (TRUE;logical) 是否保留错误(来自 stop())；默认情况下，即使出现错误，评估也不会停止！！如果我们希望 R 在错误时停止，我们需要将此选项设置为 FALSE

error: (TRUE; logical) whether to preserve errors (from stop()); by default, the evaluation will not stop even in case of errors!! if we want R to stop on errors, we need to set this option to FALSE

rmarkdown::render，RStudio 的Knit HTML"按钮/Ctrl-Shift-K 快捷键背后的函数，默认设置 error=FALSE(与 knitr::knit，默认为error=TRUE)

rmarkdown::render, the function behind RStudio's "Knit HTML" button/Ctrl-Shift-K shortcut, sets error=FALSE by default (in contrast to knitr::knit, which defaults to error=TRUE)

```{r error=TRUE}
sum(a)
```

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