[R] Creating a custom connection to read from multiple files
Prof Brian Ripley
ripley at stats.ox.ac.uk
Thu Jan 20 10:11:06 CET 2005
On Thu, 20 Jan 2005, Tomas Kalibera wrote:
> is it possible to create my own connection which I could use with
Yes. In a sense, all the connections are custom connections written by
someone.
> read.table or scan ? I would like to create a connection that would read
> from multiple files in sequence (like if they were concatenated),
> possibly with an option to skip first n lines of each file. I would like
> to avoid using platform specific scripts for that... (currently I invoke
> "/bin/cat" from R to create a concatenation of all those files).
I would use pipes, but a pure R solution is to process the files to an
anonymous file() connection and then read that.
However, what is wrong with reading a file at a time and combining the
results in R using rbind?
--
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 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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