On Fri, 12 Sep 2003, Barry Rowlingson wrote:
> Suzy Smith wrote:
> > Hello, I am currently taking a statistics course and we are to do a project
> > producing a graph using multiple input files.
> >
> > In R, I'm trying to build a filelist based on a pattern. For some reason, if I do
> > the command interactively and not assign it to an array variable I get what I
> > thought I should, but if I do this inside my R program it chops off some file
> > names and thinks there are two.
> >
> > I looked on the R website and found that there is an 8,096 character limit when
> > using a character array but mine chops at 119.
> >
> > Here is the command:
> > filelist <- system(paste("ls ", INPUTFILES, sep=""),intern=T)
> >
> > Any help would be much appreciated.
> >
>
> I dont know why that doesn't work - it might be specific to the files
> on your system. However, R has some functions for finding files, such as
> list.files():
It was an undocumented limit on R < 1.6.2, so this is probably a long
obselete version of R.
>
> > filelist <- list.files(pattern=".dat$")
> > filelist
> [1] "jobacct.dat" "winmail.dat"
> >
>
> Get more info by typing ?list.files
>
> The following functions may also be useful:
>
> file.access(base) Ascertain File Accessibility
> file.choose(base) Choose a File Interactively
> file.info(base) Extract File Information
> file.path(base) Construct Path to File
> file.show(base) Display One or More Files
--
Brian D. Ripley, [EMAIL PROTECTED]
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 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
______________________________________________
[EMAIL PROTECTED] mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help
