[R] Newbie problem with read.table
Roger Bivand
Roger.Bivand at nhh.no
Wed Oct 12 14:56:03 CEST 2005
On Wed, 12 Oct 2005, Jan Conrad wrote:
> Hi R,
> I have a seemingly simple problem. I have a table in following format
> (tab seperated)
>
> Njets NBjets NElec NMuon Meff HT HT3j HE Aplan
> Plan
> 1 4 3 2 0 366.278 253.642 87.7473 1385
> 0.0124566 0.376712
> 2 3 1 1 0 235.19 157.688 18.2852
> 574.253 0.00064187 0.00528814
>
> I read in with:
>
> > ttbar<-read.table("test2.dat",header=TRUE)
>
>
> > ttbar
> Njets NBjets NElec NMuon Meff HT HT3j HE Aplan
> 1 4 3 2 0 366.278 253.642 87.7473 1385.000 0.01245660
> 2 3 1 1 0 235.190 157.688 18.2852 574.253 0.00064187
> Plan
> 1 0.37671200
> 2 0.00528814,
>
> i.e.. the table is split after 9 variables. How come ?
> options("width")
$width
[1] 80
says what the width of your console is. Columns beyond this get wrapped
gently (not each row by itself) - it can be set different values if you
choose - try:
ow <- options("width")
options(width=40)
options("width")
ttbar
options(ow)
options("width")
So this is just the print function for data.frame objects doing its unsung
job. A very useful function for looking at things when they don't seem to
be what you think is str(), which concisely says what the structure of an
object is, so str(ttbar) should tell you that it is a data frame of 10
variables and 2 observations.
>
> Thanks,
> Jan
>
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--
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no
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