Running R function as command line script with arguments

Question

Lets say I have the following script

k <- as.numeric(readline("Start Index: "))
tot <- NULL

for (i in 1:k){
    tot <- c(tot, i)
}
write.csv(tot, "test.csv")

I would like to run this script from the command line. How can I run it so that it still asks for the user input (k). Or otherwise can I add the value of k in the CMD command as argument? I am on Linux.

couple of these floating around [link](http://stackoverflow.com/questions/4547789/command-line-arguments-in-bash-to-rscript), [link](http://stackoverflow.com/questions/3433603/parsing-command-line-arguments-in-r-scripts), [link](http://stackoverflow.com/questions/4808169/r-command-line-passing-a-filename-to-script-in-arguments-windows), [link](http://stackoverflow.com/questions/1110363/is-there-a-package-to-process-command-line-options-in-r), [link](http://stackoverflow.com/questions/2151212/how-can-i-read-command-line-parameters-from-an-r-script) — GSee, Jun 22 '12 at 21:59

score 1 · Accepted Answer · edited Jun 23 '12 at 16:25

1

You might find the information in ?commandArgs helpful.

From the description:

 Provides access to a copy of the command line arguments supplied
 when this R session was invoked.

edited Jun 23 '12 at 16:25

Dason

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answered Jun 22 '12 at 21:29

Matthew Plourde

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Running R function as command line script with arguments

1 Answers1