R Markdown-Rmd文件外部的超链接 [英] R Markdown - Hyperlink outside Rmd file

问题描述

我想知道如何为Rmd文件外部的R markdown定义超链接.在Rmd文件中定义超链接就像键入[hyperlink lable](实际链接)一样容易；但是，如果在Rmd文件上，我正在调用其他一些生成文件地址的R文件(例如，一个函数)，是否可以将这些信息传回Rmd文件，从而在其中生成超链接?

请参阅下面的示例以获取更多说明:

内部Rmd文件:

  myFun(有一些输入) 

在myFun内部:

  myFun<-函数(带有某些输入)一些计算...return("[单击此处](C:/myFile.docx)") 

生成的html页面上的输出为:

[1]"[单击此处](C:/myFile.docx)"

这不是超链接！

解决方案

如问题中所述，假设'myFun'函数的输出是超链接字符串，这是最适合我的方法:

在myFun内部:

  myFun<-function()...生成CSV文件的一些计算...return("C:/myFile.csv") 

内部Rmd文件:

 ```{r，echo = FALSE}myHyperlink<-myFun()超链接存在=！is.null(myHyperlink)``````{r，eval = hyperlink_exists，results ="asis"，echo = FALSE}cat(paste0(文件已保存"，"["，这里"，]("，myHyperlink，)"，"\ n"))``` 

I am wondering how we can define a hyperlink for R markdown outside Rmd file. Defining a hyperlink inside Rmd file is as easy as typing [hyperlink lable](actual link); but, if on the Rmd file, I am calling some other r-file (e.g., a function) that generates an address to a file, is there a way to transfer this information back to Rmd file to generate a hyperlink there?

Please see example below for more clarification:

Inside Rmd file:

myFun( with some input)

Inside myFun:

myFun <- function( with some input)
some calculations...
return("[click here](C:/myFile.docx)")

The output on the generated html page is:

[1] "[click here] (C:/myFile.docx)"

Which is not a hyperlink!

解决方案

As mentioned in the question, assuming the output of 'myFun' function is the hyperlink string, here is what worked best for me:

Inside myFun:

myFun <- function()
...some calculations to generate a csv file...
return("C:/myFile.csv")

Inside Rmd file:

```{r, echo=FALSE}
myHyperlink <- myFun()
hyperlink_exists = !is.null(myHyperlink)
```

```{r, eval=hyperlink_exists, results="asis", echo=FALSE}
cat(paste0("The file is saved ","[", "Here", "](", myHyperlink, ")","\n"))
```

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