[R] Newbie query - reading data into R
Prof Brian Ripley
ripley at stats.ox.ac.uk
Tue Jan 26 13:02:49 CET 1999
Try sep="\t", if they are really separated by tabs (they were not in
your email by the time it reached here). Actually, you don't need
as.if=F, either, as the first column should be the row names:
> read.table("test.dat", header=T, row.names=1, sep="\t")
works on your example (with tabs in the file).
(S-PLUS behaves differently here, and guesses the first column
should be the row names without being told).
I don't know how you got a list -- that may depend on the version of
R you used, so please tell us when you post. (On 0.63.2 I tried
a few ideas, but failed. It may be that you do in fact have
a data frame, but a malformed one so that it prints like a list.)
> Date: Tue, 26 Jan 1999 22:30:09 +1300
> From: Andy Elvey <andyelv at ibm.net>
> ( This may seem a basic query, but anyway ... here goes ... :-)
> I have a simple ASCII dataset which I'm trying to read into R (and
> trying to get R to accept it as a data-frame). The data is of the form
> City Number
> Napier 324
> Auckland 657
> Wellington 879
> Christchurch 904
> - and so on. The data is separated by tabs , as above.
> I use the read.table function as follows -
> a <- read.table("C:\\RNew\\Doc\\data1.txt",as.is=F,header=T)
> This reads the data in OK, but it is as a list - not as a data-frame.
> How can I use the read.table function to read the data into a
> I have documentation for S-plus and have read the R documentation, but
> so far - no success.
Beware, R is `not unlike S' but it is also different from S-PLUS,
in ways that change by the R version.
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 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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