[R] windows nt/access other directories/ attach/system
Prof Brian D Ripley
ripley at stats.ox.ac.uk
Fri Jun 1 08:39:36 CEST 2001
On Fri, 1 Jun 2001, S.McClatchie wrote:
> System info:
> R version rw1022 on NT
> ESS v. 5.1.18 using emacs ver. 20.4
> As recommended, I keep separate directories for projects, but also use
> separate sub-directories for types of data (e.g. different oceanographic
> instruments) within projects.
> My problem is that I often need to access the objects and data (not
> stored as objects) in more than one directory.
> I understand (mistakenly?) that at present you cannot use attach() with
> directories, just with objects and packages. Also I think
attach only concerns the search path for objects.
> system("command") is for the UNIX environment. System("cd ..") gives
> me an error under Windows NT. Obviously it is inconvenient to quit R and
False. system() is also under NT, and if cd is in your path under NT it
works. It just doesn't (NT or Unix) change directory for the R process.
> restart in the other directory, and messy to combine the "instrument sub-
> directories" into a giant "project directory".
> Do you have a suggestion of how to proceed, other than keeping my
> data as objects (I generally prefer to keep my data as text files so I can
> access them with Matlab when I need to).
Try help(setwd). Or use the File | Change dir menu item on Rgui.
Help files with alias or title matching `directory':
Type `?FOO' to inspect entry `FOO(PKG) TITLE'.
getwd(base) Get or Set Working Directory
list.files(base) List the Files in a Directory/Folder
R.home(base) Return the R Home Directory
RHOME(base) R Home Directory
might have been helpful.
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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