How to get the script path in R? [duplicate]

Question

Possible Duplicate:
Rscript: Determine path of the executing script

Always I run an R script, it take My Documents as working directory.

When I run the script, I want to get the script path and change the working directory to it. How I can do this?

I want this to run the scripts in same folder with the source() function.

Wilhelm

If you use ESS there's a macro to do this. Probably for other editors too. – Gerson

Perhaps: args <- commandArgs(trailingOnly = F) ; scriptPath <- dirname(sub("--file=","",args[grep("--file",args)])) From one of the answers in the above cited SO link. – Rigmarole

Answer 1

if you run script by source, then try source(file, chdir = TRUE).

Appliance

Answer 2

What the hex, I try putting it in as a solution:

args <- commandArgs(trailingOnly = F)
 scriptPath <- dirname(sub("--file=","",args[grep("--file",args)]))

Rigmarole