[R] problem with "choose.files" command & interactive functions

Duncan Murdoch murdoch at stats.uwo.ca
Thu Mar 26 14:20:07 CET 2009

On 3/26/2009 9:09 AM, Shay O'Farrell wrote:
> Hi all,
> I’m new to R, and I’m having a small but annoying problem with the 
> choose.files command, using version 2.8.1 in Windows XP. I am holding my 
> data text files in C:\\Data\\, and I’m writing a short script that first 
> resets the default directory to this directory, then allows me to 
> interactively select which text file to import and attach, using the 
> Windows widget. Here is my script:
> setwd("C:\\Data\\")
> data<-read.table(choose.files(),header=T,as.is=T)
> attach(data)
> If I copy and paste the script into R Editor (or directly into RGui) and 
> run it, it works perfectly. However, if have imported the script using 
> the Open Script button in RGui, then I have a glitch... when I run the 
> script, the widget looks in the last folder that I opened interactively 
> (i.e., the folder from which I imported my script file) instead of 
> looking in the new working directory. BUT... if I run line 3 again 
> straight after, it works perfectly the second time. What am I doing 
> wrong? Any help would be appreciated.

If you don't specify where to open the dialog, it will open in the last 
location where it was opened.  This saves time if you are running it 
more than once, because often you will open files from the same 
directory.   If you don't want that, you can specify which directory to 
open, and get it to always open in the current directory using 

Duncan Murdoch

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