Dear List-members,
to download a file from the net, the function download.file(..)
does the job. However, before embarking on the download, I would
like to find out how large the file is. Is there a way to know it?
Most easily, this question has been asked before, but I am new to
the list.
Essentially no. Most servers will give you the length if you start the
download, and then R prints it out, but it may be unknown. As in
update.packages()
trying URL `http://cran.r-project.org/src/contrib/PACKAGES'
Content type `text/plain; charset=iso-8859-1' length 95407 bytes
opened URL
to download a file from the net, the function download.file(..)
does the job. However, before embarking on the download, I would
like to find out how large the file is. Is there a way to know it?
You can send web servers a 'HEAD' request, which can give you some
basic information about
On Tue, 4 Feb 2003, Barry Rowlingson wrote:
That's bytes. Yes I know its character! I dont think web servers are
under any obligation to provide accurate Content-length values. Many
dynamic web servers have pages that change length every time. This will
also not for for ftp:// URLs or local
On Tue, 4 Feb 2003, Thomas Lumley wrote:
On Tue, 4 Feb 2003, Barry Rowlingson wrote:
That's bytes. Yes I know its character! I dont think web servers are
under any obligation to provide accurate Content-length values. Many
dynamic web servers have pages that change length every time.
