Is it possible to include or display an .r script in the output of .rmd file?
Important - just want to display the .r file!
Tried source(filename.r); source does not display it.
Any ideas?
**knitr Global Options**
```{r echo=TRUE}
knitr::opts_chunk$set(tidy=FALSE, fig.path='figures/')
```
**Load Libraries**
```{r echo=TRUE}
library(dplyr)
```
```{r echo=TRUE, include=TRUE}
source("external.R")
# the complete source code of the .r file should be displayed here
# possible?
```
What would be the use-case for such a requirement?
Creating .Rmd helps with documentation. In fact all my documentation is created using .Rmd.
There are .R scripts which take a long time to run (processing large data). In such a case working with .Rmd is not practical. Prefer to work with .R scripts.
If the source code of the .R can be "included & displayed" in the .Rmd would be wonderful for documentation purpose.
For this particular case, there is a simple solution. That is, you can assign source code to the chunk option code
, then knitr will just take your source code as if it were written in the code chunk, e.g.
```{r, code = readLines('external.R')}
```
Alternatively and equivalently, you can use the file
option:
```{r, file = 'external.R'}
```