Actually, it does
if (is.character(file))
if (file == "")
file <- stdin()
else {
file <- file(file, "r")
on.exit(close(file))
}
so all the searching is done in the file() connection.
You could do this via a search_file() connection wrapper, but there is a
problem with ensuring connections get closed (which on.exit does here).
On Tue, 29 May 2007, Barry Rowlingson wrote:
> Zhiliang Ma wrote:
>> Thanks, Barry.
>> In fact, I have a function just like yours, and I'm looking for a simple
>> alternative function, which is like "path" in Matlab.
>
> Dont think it can be done - if you look at the code for 'scan', it
> disappears off into internal() calls to do the business of finding and
> reading a file, so you're going to have trouble changing its behaviour
> in R. You'd have to patch R's C source to implement a search path.
>
> Barry
>
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>
--
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
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