Knitr中非数字变量的内联代码块 [英] Inline code chunk for non-numeric variables in knitr

问题描述

我正在尝试使用内联R Markdown代码访问因子的第一级.如果使用块，则可以使它工作，但是如果内联地使用，则不能.

I'm trying to use inline R Markdown code to access the first level of a factor. I can get it to work if I use a chunk but not if I do it inline.

所以这可行:

```{r}
as.character(iris$Species[1])
```

这不是:

`r as.character(iris$Species[1])`

如果我保存了缓存并编织了两次文档，则可以运行内联版本.我发现这有点奇怪，因为数字变量的行为不同.因此，例如，这种方法无需编织两次即可

I could get the inline version to run if I saved the cache and knitted the document twice. I just found this a bit odd because numeric variables behave differently. So, for instance, this works without having to knit it twice

`r mean(iris$Sepal.Length)` 

推荐答案

对不起.我发现了问题所在.我从>此处导致问题的原因:

Sorry. I found out what the problem was. I found an inline hook that I had taken from here that turned out to cause the problem:

```{r, echo = FALSE}
inline_hook <- function(x){
    if(is.numeric(x)){
      paste(format(x,digits = 2))
    }
   }
knitr::knit_hooks$set(inline=inline_hook)
```

这篇关于Knitr中非数字变量的内联代码块的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！