download.file()
On Tue, Mar 18, 2008 at 8:57 AM, Henrik Bengtsson <hb at stat.berkeley.edu> wrote:
On Tue, Mar 18, 2008 at 8:46 AM, Paul Evans <p.evans48 at yahoo.com> wrote:
> Hi, > > I wanted to download a file and did the following: > ---------------------------------------------------------
> > fileLink <- 'ftp://ftp.ncbi.nih.gov/pub/geo/DATA/supplementary/series/GSE1000/GSE1000_RAW.tar' > > download.file(fileLink,'/geoDat')
> trying URL 'ftp://ftp.ncbi.nih.gov/pub/geo/DATA/supplementary/series/GSE1000/GSE1000_RAW.tar' > ftp data connection made, file length 35307520 bytes > opened URL > downloaded 34480Kb >
> >
> ------------------------------------------------------------
>
> However, when I look in the destination directory ('/geoDat'), the file is not there (I also tried giving it the absolute path).
>
> What am I doing wrong?
I'm quite sure the 'destfile' argument of download.file() is a file not a directory. Example:
> download.file("http://www.r-project.org/index.html", destfile="foo.html")
> file.info("foo.html")
size isdir mode mtime ctime
foo.html 785 FALSE 666 2008-03-18 08:54:19 2008-03-18 08:54:11
atime exe
foo.html 2008-03-18 08:54:19 no
So you probably saved the downloaded file as 'geoDat' in the root
directory '/'.
Also, you want to download the file in a binary fashion, i.e. use argument mode="wb", otherwise your binary tar file will be corrupt. R-core: I'd suggest to replace the default to mode="wb" for file transfers. /Henrik
/Henrik
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