Create a r script to render a Rmarkdown daily on a mac

[Julio555]

I am trying to create a r script so it automatically renders a PDF Rmarkdown daily, but the log shows :

Error in -title : invalid argument to unary operator
Execution halted

Is there a different process for scheduling a markdown with an rscript?

[pieterjanvc]

Hi,

Welcome to the RStudio community!

Are you trying to run the markdown file directly from Rscript.exe? That is not possible, as you need to create an R script that then knits the markdown with the correct parameters (if needed).

rmarkdown::render("MyDocument.Rmd", params = list(
  year = 2017,
  region = "Asia",
  printcode = FALSE,
  file = "file2.csv"
))

15.3 Knitting with parameters | R Markdown: The Definitive Guide

Hope this helps,
PJ

[Julio555]

Hi PJ,

Thanks for the reply

I am trying create a script that renders the Rmarkdown without having to press knit in the Rmarkdown.

So I would have to create a Rscrip to render the file, and then another Rscrip to create the job?

Thanks
Julio

[pieterjanvc]

Hi,

Yes so you have an R script like this:

myJob.R

rmarkdown::render("MyDocument.Rmd", params = list(
  year = 2017,
  region = "Asia",
  printcode = FALSE,
  file = "file2.csv"
))

Then you can call this script from any terminal

Rscript /path/to/script/myJob.R

And it will generate the Markdown

Or if you don't have any parameters you need to set you can combine it

Rscript -e "rmarkdown::render(\"MyDocument.Rmd\")"

PJ