Is it possible to specify command line parameters to R-script in RStudio?

Question

I want to use RStudio to edit an R-script having command line parameters, e.g.,

my_rscript --dataset mydataset

and then to read the optiion

Answer 1

This worked for me: My Rscript is as follows:

args <- commandArgs()
print(paste0("args:", args))
print(paste0("args[1]:",args[1]))
print(paste0("args[2]:",args[2]))
print(paste0("args[3]:",args[3]))
print(paste0("# of args:",length(args)))

'

To emulate the command line input I would use with Rscript, I entered this in RStudio:

commandArgs <- function() c("AMZN", 10, 200)

which gave the desired result:

[1] "args:AMZN" "args:10"   "args:200" 
[1] "args[1]:AMZN"
[1] "args[2]:10"
[1] "args[3]:200"
[1] "# of args:3"